Patent application title:

PADDLE INCLUDING AN ELASTOMER LAYER

Publication number:

US20260158347A1

Publication date:
Application number:

19/409,570

Filed date:

2025-12-04

Smart Summary: A pickleball paddle has a core and a special layer made of elastic material. This elastic layer is attached to the core and can be found in the honeycomb structure of the paddle. There is also an outer layer that connects to the core or the elastic layer. The elastic layer can be made from different types of flexible materials, like thermoplastic elastomer or silicone. This design helps improve the paddle's performance and feel during play. 🚀 TL;DR

Abstract:

A pickleball paddle may include a core and an elastomer layer coupled to the core. An outer layer may be coupled to the core, the elastomer layer or combinations thereof. The elastomer layer may be embedded within at least a portion of the honeycomb structure of the core and may be coupled to at least a portion of the honeycomb structure. The elastomer layer may include a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, or combinations thereof.

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Classification:

A63B59/45 »  CPC main

Bats, rackets, or the like, not covered by groups -; Rackets or the like with flat striking surfaces for hitting a ball in the air, e.g. for table tennis with solid surfaces Rubber parts thereof; characterised by bonding between a rubber part and the racket body

A63B2102/08 »  CPC further

Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like Paddle tennis, padel tennis or platform tennis

A63B2209/02 »  CPC further

Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres

Description

CROSS REFERENCE TO RELATED PATENT APPLICATION(S)

This application claims the benefit of and priority to U.S. Provisional Patent Application No. 63/728,534, filed Dec. 5, 2024, the entirety of which is incorporated herein.

TECHNICAL FIELD

The present disclosure relates generally to sports equipment. Specifically, the present disclosure relates to systems and methods for sound and/or vibration-dampening in pickleball paddles while maintaining power and control in the pickleball paddles.

BACKGROUND

Different types of sports are ubiquitously engaged in by participants for various reasons, including to improve health, for leisure and enjoyment, and for competitive or professional purposes, among other reasons. One such sport that is quickly becoming a popular sport is pickleball. Pickleball is an indoor or outdoor paddle sport in which two (singles) or four (doubles) players hit a perforated, hollow plastic ball with paddles over a 34-inch-high net until one side is unable to return the ball or commits an infraction.

When pickleballs are struck with a pickleball paddle, a sharp popping sound that is loud enough to create a nuisance may be produced. The constant sound during play has generated conflict between pickleball court owners and nearby property owners, including residential property owners. The noise, combined with the rapid rise in the popularity of pickleball, has resulted in an intense backlash against the sport in communities across the world. Some municipalities have even instituted bans on the play of pickleball, citing the inability of some neighbors to hold conversations inside their residences, general discord in the area, and even physically debilitating stress allegedly due to the noise from the pickleball play. Further, in some instances, players themselves may become annoyed at the constant sharp popping sound produced by hitting a pickleball with a pickleball paddle.

Still further, pickleball may be played in front of a group of spectators. These spectators may be viewing a number of pickleball games at a tournament or similar match play scenario. Further, video of these tournaments may be captured for real-time broadcast of the tournament and/or later viewing. In these scenarios, the sharp popping sound may cause interference with the broadcast or recording of the tournament and match play and may make it difficult for viewers of the broadcasted or recorded video to enjoy the presentation of the tournament and match play.

Further, when pickleballs are struck with a pickleball paddle, a vibration in the hand of the user may occur. This vibration may, for example, cause the pickleball to rebound off the pickleball paddle in an unexpected manner and/or direction. Further, this vibration may cause irritation or pain in the user's hand or may cause the user to become distracted or distrust the effectiveness or resilience of the pickleball paddle.

Still further, attempts may be made to reduce acoustic nuisance and/or vibration in the pickleball paddles. However, such attempts may reduce the power that the pickleball paddle may be able to impart on a pickleball when struck. Further, such attempts to reduce acoustic nuisance and/or vibration in the pickleball paddles may result in reduced control. These attempts may result in a less effective pickleball paddle, which, in turn, may result in a negative consumer or player experience.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description is set forth below with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The use of the same reference numbers in different figures indicates similar or identical items. The systems depicted in the accompanying figures are not to scale and components within the figures may be depicted not to scale with each other.

FIG. 1 illustrates an exploded, isometric view of a paddle, according to an example of the principles described herein.

FIG. 2 illustrates an exploded, isometric view of a paddle, according to an example of the principles described herein.

FIG. 3 illustrates an exploded, isometric view of a paddle, according to an example of the principles described herein.

FIG. 4 illustrates an exploded, isometric view of a paddle, according to an example of the principles described herein.

FIG. 5 illustrates an isometric view of a core of a paddle including an elastomer coupled to a portion thereof, according to an example of the principles described herein.

FIG. 6 illustrates a side view of the core of the paddle of FIG. 5.

FIG. 7 illustrates a side view of the core of the paddle of FIG. 5.

DESCRIPTION OF EXAMPLE EMBODIMENTS

Overview

In an embodiment, a pickleball paddle may include at least one layer in addition to a core and outer layers of the pickleball paddle that imparts noise-dampening and/or vibration-dampening qualities to the pickleball paddle while increasing power and control in the pickleball paddle. As mentioned above, the sharp popping sound caused by striking the pickleball with a pickleball paddle may be a significant nuisance. Further, the vibration caused by striking the pickleball with a pickleball paddle may be uncomfortable to a player or cause the pickleball to rebound off the pickleball paddle in an unexpected manner and/or direction. Still further, attempts to address these issues through various methods may result in a less effective pickleball paddle and, consequently, a diminished user experience.

Examples described herein provide a pickleball paddle including a core and an elastomer layer coupled to the core. The pickleball paddle may further include an outer layer coupled to the core, the elastomer layer, and combinations thereof. The core may include a honeycomb structure.

In an embodiment, the elastomer layer may be embedded within at least a portion of the honeycomb structure of the core. The elastomer layer may be coupled to at least a portion of the honeycomb structure of the core. The elastomer layer may include a first elastomer layer coupled to a first side of the core, and a second elastomer layer coupled to a second side of the core. The elastomer layer may include a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, and combinations thereof.

In an embodiment, the elastomer layer may include a first elastomer layer coupled to a first side of the core and a second elastomer layer coupled to a second side of the core. The outer layer may include a first outer layer coupled to a side of the first elastomer layer opposite the core and a second outer layer coupled to a side of the second elastomer layer opposite the core. The outer layer may include fiberglass. The outer layer may include carbon fiber.

Examples described herein also provide a pickleball paddle including a core, an intermediate layer coupled to the core, and an elastomer layer coupled to the intermediate layer. The core may include a honeycomb structure.

The elastomer layer may be embedded within at least a portion of the honeycomb structure of the core. The elastomer layer may be coupled to at least a portion of the honeycomb structure of the core. The elastomer layer may include a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, and combinations thereof. The elastomer layer may include a first elastomer layer coupled to a first side of the core and a second elastomer layer coupled to a second side of the core.

The elastomer layer may include a first elastomer layer coupled to the first intermediate layer opposite the core, and a second elastomer layer coupled to the second intermediate layer opposite the core. The first intermediate layer, the second intermediate layer, and combinations thereof may include a woven fabric. The first intermediate layer, the second intermediate layer, and combinations thereof may include a non-woven fabric. The intermediate layer may include a first intermediate layer coupled to a first elastomer layer opposite a first side of the core, and a second intermediate layer coupled to a second elastomer layer opposite a second side of the core. The intermediate layer may include a first intermediate layer coupled to a first side of the core, and a second intermediate layer coupled to a second side of the core.

The pickleball paddle may further include an outer layer coupled to the elastomer layer. The outer layer may include a first outer layer coupled to the first elastomer layer opposite the first intermediate layer, and a second outer layer coupled to the second elastomer layer opposite the second intermediate layer. The outer layer may include fiberglass. The outer layer may include carbon fiber.

Examples described herein also provide a pickleball paddle including a first core, an elastomer layer coupled to the first core, and a second core coupled to the elastomer layer opposite the first core. The pickleball paddle may further include a first outer layer coupled to the first core opposite the elastomer layer, and a second outer layer coupled to the second core opposite the elastomer layer. The first outer layer and the second outer layer may include fiberglass. The first outer layer and the second outer layer may include carbon fiber.

The first core and the second core may include a honeycomb structure. The elastomer layer may be embedded within at least a portion of the honeycomb structure of the first core, the second core, and combinations thereof. The elastomer layer may be coupled to at least a portion of the honeycomb structure of the first core, the second core, and combinations thereof. The elastomer layer may include a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, and combinations thereof.

Examples described herein also provide a pickleball paddle including a first core, an elastomer layer coupled to the first core, and a second core coupled to the elastomer layer opposite the first core. The pickleball paddle may further include a first intermediate layer coupled to the first core opposite the elastomer layer and a second intermediate layer coupled to the second core opposite the elastomer layer. The first intermediate layer and the second intermediate layer comprise a woven fabric. The first intermediate layer and the second intermediate layer comprise a non-woven fabric.

The elastomer layer may include a first elastomer layer. The first intermediate layer may include a second elastomer layer, and the second intermediate layer may include a third elastomer layer. The pickleball paddle may further include a first outer layer coupled to the first intermediate layer opposite the first core and a second outer layer coupled to the second intermediate layer opposite the second core. The first outer layer and the second outer layer may include fiberglass. The first outer layer and the second outer layer may include carbon fiber.

The first core and the second core may include a honeycomb structure. The elastomer layer may be embedded within at least a portion of the honeycomb structure of the first core, the second core, and combinations thereof. The elastomer layer may be coupled to at least a portion of the honeycomb structure of the first core, the second core, and combinations thereof. The elastomer layer may further include a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, and combinations thereof.

Examples described herein also provide that a pickleball paddle may include a core, an elastomer layer coupled to the core, and an intermediate layer coupled to the elastomer layer opposite the core. The elastomer layer may include a first elastomer layer coupled to a first side of the core, and a second elastomer layer coupled to a second side of the core. The core may include a honeycomb structure.

The first elastomer layer, the second elastomer layer, and combinations thereof may be embedded within at least a portion of the honeycomb structure of the core. The first elastomer layer, the second elastomer layer, and combinations thereof may be coupled to at least a portion of the honeycomb structure of the core. The elastomer layer may include a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, and combinations thereof. The intermediate layer may include a first intermediate layer coupled to a side of the first elastomer layer opposite the core, and a second intermediate layer coupled to a side of the second elastomer layer opposite the core.

The pickleball paddle may further include an outer layer coupled to the intermediate layer opposite the elastomer layer. The outer layer includes a first outer layer coupled to the first intermediate layer opposite the first elastomer layer, and a second outer layer coupled to the second intermediate layer opposite the second elastomer layer. The first intermediate layer, the second intermediate layer, and combinations thereof may include fiberglass. The first intermediate layer, the second intermediate layer, and combinations thereof may include carbon fiber. The outer layer may include fiberglass. The outer layer may include carbon fiber.

EXAMPLE EMBODIMENTS

This disclosure describes example pickleball paddles that incorporate an elastomer within the paddle. As described herein, a pickleball paddle may include a core and an elastomer layer coupled to the core. The pickleball paddle may further include an outer layer coupled to the core, the elastomer layer, and combinations thereof. The core may include a honeycomb structure.

Certain implementations and embodiments of the disclosure will now be described more fully below with reference to the accompanying figures, in which various aspects are shown. However, the various aspects may be implemented in many different forms and should not be construed as limited to the implementations set forth herein. The disclosure encompasses variations of the embodiments, as described herein. Like numbers refer to like elements throughout.

FIG. 1 illustrates an exploded, isometric view of a paddle 100, according to an example of the principles described herein. The paddle 100 depicted in FIG. 1 may include a core 102. In an embodiment, the core 102 may include a honeycomb structure. In an embodiment, the honeycomb structure may be made of any material such as, for example, a thermoplastic, polypropylene (PP), polycarbonate (PC), aluminum, Nomex produced and distributed by DuPont de Nemours, Inc., or other materials. In an embodiment, the honeycomb structure may be made by extrusion that is processed via a block of extruded profiles or extruded tubes having a variety of cell diameters, thicknesses, and densities from which honeycomb sheets may be sliced.

The paddle 100 of FIG. 1 may include a first elastomer layer 104-1 and a second elastomer layer 104-2 (collectively referred to herein as elastomer layer(s) 104 unless specifically addressed otherwise). The elastomer layers 104 may be coupled to the core 102. In an embodiment, the first elastomer layer 104-1 may be coupled to a first side of the core 102, and the second elastomer layer 104-2 may be coupled to a second, opposite side of the core 102.

The elastomer layers 104 described herein may be any polymer that displays rubber-like elasticity. The elastomer may be any rubber-like solid that has elastic properties and may include, for example, thermosetting polymers (e.g., those polymers that are processed via vulcanization), thermoplastic elastomers, thermoplastic rubbers, and/or similar materials. In an embodiment, the elastomer layers 104 may include thermoplastic elastomer (TPE) layers, thermoplastic polyurethane (TPU) layers, silicone layers, polyether block amide (PEBA) layers, ethylene propylene diene monomer (EPDM) layers, and combinations thereof. However, the elastomer layers 104 described herein may include any substance that includes long polymer chains that cross-link during curing and exhibit the ability to reconfigure themselves to distribute an applied stress. The covalent cross-linkages in the elastomer layers 104 ensure that the elastomer will return to its original configuration when the stress is removed. Crosslinking of the elastomer layers 104 may occur in an equilibrated polymer without any solvent.

The elastomer layers 104 described herein may impart several advantageous characteristics and qualities to the paddles described herein, including improved vibration-dampening, acoustic performance, and playability. The elastomer layers 104 absorb and dissipate vibrations generated upon impact of a pickleball. This reduces hand fatigue and enhances player comfort. Further, the elasticity of the elastomer layers 104 contributes to a rebounding effect that improves ball control and increases the power that may be transferred to the pickleball when struck.

As to the elastomer layers 104 imparting acoustic dampening or eliminating properties or characteristics, the elastomer layers 104 may impede or mitigate sound propagation through the absorption of the energy of sound waves produced as the paddle 100 strikes a pickleball. The elastomer layers 104 described herein may impart acoustic impedance and/or specific acoustic impedance characteristics. In an embodiment, the elastomer layers 104 may employ aspects of acoustic impedance, including, for example, acoustic resistance, acoustic reactance, inductive acoustic reactance, capacitive acoustic reactance, acoustic admittance, acoustic conductance, and/or acoustic susceptance. Further, in an embodiment, the elastomer layers 104 may employ aspects of specific acoustic impedance, including, for example, specific acoustic resistance, specific acoustic reactance, specific inductive acoustic reactance, specific capacitive acoustic reactance, specific acoustic admittance, specific acoustic conductance, and/or specific acoustic susceptance.

Acoustic impedance and/or specific acoustic impedance may be defined as measures of the opposition that a paddle presents to the acoustic flow resulting from an acoustic pressure applied to the paddle. As to acoustic impedance, for a linear time-invariant system, the relationship between the acoustic pressure applied to the system (e.g., the paddle) and the resulting acoustic volume flow rate through a surface perpendicular to the direction of that pressure at its point of application may be defined as:

p ⁡ ( t ) = [ R * Q ] ⁢ ( t ) Eq . 1

or equivalently by:

Q ⁡ ( t ) = [ G * p ] ⁢ ( t ) Eq . 2

where p is the acoustic pressure; is the acoustic volume flow rate; * is a convolution operator; R is the acoustic resistance in the time domain; and G=R−1 is the acoustic conductance in the time domain (R−1 being the convolution inverse of R).

Acoustic impedance, denoted as Z, is the Laplace transform, or the Fourier transform, or the analytic representation of time domain acoustic resistance:

Z ⁡ ( s ) = def ℒ [ R ] ⁢ ( s ) = ℒ [ p ] ⁢ ( s ) ℒ [ Q ] ⁢ ( s ) ; Eq . 3 Z ⁡ ( w ) = def ℱ [ R ] ⁢ ( w ) = ℱ [ p ] ⁢ ( ω ) ℱ [ Q ] ⁢ ( ω ) ; Eq . 4 and Z ⁡ ( t ) = def R a ( t ) = 1 2 [ p a * ( Q - 1 ) a ] ⁢ ( t ) . Eq . 5

where is the Laplace transform operator; is the Fourier transform operator; subscript “a” is the analytic representation operator; and −1 is the convolution inverse of .

Acoustic resistance, denoted R, and acoustic reactance, denoted X, are the real part and imaginary part, respectively, of acoustic impedance respectively:

Z ⁢ ( s ) = R ⁢ ( s ) + iX ⁡ ( s ) ; Eq . 6 Z ⁡ ( ω ) = R ⁡ ( ω ) + iX ⁡ ( ω ) ; Eq . 7 and Z ⁡ ( t ) = R ⁡ ( t ) + iX ⁡ ( t ) . Eq . 8

where i is the imaginary unit; in Z(s), R(s) is not the Laplace transform of the time domain acoustic resistance R(t), Z(s) is; in Z(ω), R(ω) is not the Fourier transform of the time domain acoustic resistance R(t), Z(ω) is; and in Z(t), R(t) is the time domain acoustic resistance and X(t) is the Hilbert transform of the time domain acoustic resistance R(t), according to the definition of the analytic representation.

Inductive acoustic reactance, denoted by XL, and capacitive acoustic reactance, denoted by XC, are the positive part and negative part of acoustic reactance, respectively:

X ⁡ ( s ) = X L ( s ) - X c ( s ) ; Eq . 9 X ⁡ ( ω ) = X L ( ω ) - X c ( ω ) ; Eq . 10 and X ⁡ ( t ) = X L ( t ) - X c ( t ) . Eq . 11

Acoustic admittance, denoted by Y, is the Laplace transform, or the Fourier transform, or the analytic representation of time domain acoustic conductance:

Y ⁡ ( s ) = def ℒ [ G ] ⁢ ( s ) = 1 Z ⁡ ( s ) = ℒ [ Q ] ⁢ ( s ) ℒ [ p ] ⁢ ( s ) ; Eq . 12 Y ⁡ ( ω ) = def ℱ [ G ] ⁢ ( ω ) = 1 Z ⁡ ( ω ) = ℱ [ Q ] ⁢ ( ω ) ℱ [ p ] ⁢ ( ω ) ; Eq . 13 and Y ⁡ ( t ) = def G a ( t ) = Z - 1 ( t ) = 1 2 [ Q a * ( p - 1 ) a ] ⁢ ( t ) . Eq . 14

where Z−1 is the convolution inverse of Z; and p−1 is the convolution inverse of p.

Acoustic conductance, denoted G, and acoustic susceptance, denoted B, are the real part and imaginary part of acoustic admittance respectively:

Y ⁡ ( s ) = G ⁡ ( s ) + iB ⁡ ( s ) ; Eq . 15 Y ⁡ ( ω ) = G ⁡ ( ω ) + iB ⁡ ( ω ) ; Eq . 16 and Y ⁡ ( t ) = G ⁡ ( t ) + iB ⁡ ( t ) . Eq . 17

where in Y(s), G(s) is not the Laplace transform of the time domain acoustic conductance G(t), Y(s) is; in Y(ω), G(ω) is not the Fourier transform of the time domain acoustic conductance G(t), Y(ω) is; in Y(t), G(t) is the time domain acoustic conductance and B(t) is the Hilbert transform of the time domain acoustic conductance G(t), according to the definition of the analytic representation.

Acoustic resistance represents the energy transfer of an acoustic wave. The pressure and motion are in phase, so work is done on the medium ahead of the wave. Acoustic reactance represents the pressure that is out of phase with the motion and causes no average energy transfer.

As to specific acoustic impedance, for a linear time-invariant system, the relationship between the acoustic pressure applied to the system and the resulting particle velocity in the direction of that pressure at its point of application is given by the following:

p ⁡ ( t ) = [ r * v ] ⁢ ( t ) Eq . 18 v ⁡ ( t ) = [ g * p ] ⁢ ( t ) Eq . 19

where p is the acoustic pressure; v is the particle velocity; r is the specific acoustic resistance in the time domain; and g=r−1 is the specific acoustic conductance in the time domain (r−1 is the convolution inverse of r).

Specific acoustic impedance, denoted z, is the Laplace transform, or the Fourier transform, or the analytic representation of time domain specific acoustic resistance:

Z ⁡ ( s ) = def ℒ [ R ] ⁢ ( s ) = ℒ [ p ] ⁢ ( s ) ℒ [ v ] ⁢ ( s ) ; Eq . 20 Z ⁡ ( ω ) = def ℱ [ r ] ⁢ ( ω ) = ℱ [ p ] ⁢ ( ω ) ℱ [ v ] ⁢ ( ω ) ; Eq . 21 and z ⁡ ( t ) = def r a ( t ) = 1 2 [ p a * ( v - 1 ) a ] ⁢ ( t ) . Eq . 22

where v−1 is the convolution inverse of v.

Specific acoustic resistance, denoted as r, and specific acoustic reactance, denoted as x, are the real part and imaginary part of specific acoustic impedance, respectively:

Z ⁡ ( s ) = r ⁡ ( s ) + ix ⁡ ( s ) ; Eq . 23 Z ⁡ ( ω ) = r ⁡ ( ω ) + ix ⁡ ( ω ) ; Eq . 24 and z ⁡ ( t ) = r ⁡ ( t ) + ix ⁡ ( t ) . Eq . 25

where in z(s), r(s) is not the Laplace transform of the time domain specific acoustic resistance r(t), z(s) is; in z(ω), r(ω) is not the Fourier transform of the time domain specific acoustic resistance r(t), z(ω) is; and in z(t), r(t) is the time domain specific acoustic resistance and x(t) is the Hilbert transform of the time domain specific acoustic resistance r(t), according to the definition of the analytic representation.

Specific inductive acoustic reactance, denoted xL, and specific capacitive acoustic reactance, denoted xC, are the positive part and negative part of specific acoustic reactance respectively:

x ⁡ ( s ) = x L ( s ) - x c ( s ) ; Eq . 26 x ⁡ ( ω ) = x L ( ω ) - x c ( ω ) ; Eq . 27 and x ⁡ ( t ) = x L ( t ) - x c ( t ) . Eq . 28

Specific acoustic admittance, denoted y, is the Laplace transform, or the Fourier transform, or the analytic representation of time domain specific acoustic conductance:

y ⁡ ( s ) = def ℒ [ Gg ] ⁢ ( s ) = ℒ [ v ] ⁢ ( s ) ℒ [ p ] ⁢ ( s ) ; Eq . 29 y ⁡ ( ω ) = def ℱ [ g ] ⁢ ( ω ) = 1 z ⁡ ( ω ) ⁢ ℱ [ v ] ⁢ ( ω ) ℱ [ p ] ⁢ ( ω ) ; Eq . 30 and y ⁡ ( t ) = def g a ( t ) = z - 1 ( t ) = - 1 2 [ v a * ( p - 1 ) a ] ⁢ ( t ) . Eq . 31

where z−1 is the convolution inverse of z; and p−1 is the convolution inverse of p.

Specific acoustic conductance, denoted g, and specific acoustic susceptance, denoted b, are the real part and imaginary part of specific acoustic admittance respectively:

y ⁡ ( s ) = g ⁡ ( s ) + ib ⁡ ( s ) ; Eq . 32 y ⁡ ( ω ) = g ⁡ ( ω ) + ib ⁡ ( ω ) ; Eq . 33 and y ⁡ ( t ) = g ⁡ ( t ) + ib ⁡ ( t ) . Eq . 34

where in y(s), g(s) is not the Laplace transform of the time domain acoustic conductance g(t), y(s) is; in y(ω), g(ω) is not the Fourier transform of the time domain acoustic conductance g(t), y(ω) is; and in y(t), g(t) is the time domain acoustic conductance and b (t) is the Hilbert transform of the time domain acoustic conductance g(t), according to the definition of the analytic representation. Specific acoustic impedance z is an intensive property of a particular medium (e.g., the z of air or water can be specified). However, acoustic impedance Z is an extensive property of a particular medium and geometry (e.g., the Z of a particular duct filled with air can be specified).

Through the use of the above mathematical definitions and the elastomer layers 104 described herein, noise-dampening and/or vibration-dampening characteristics may be imparted to the paddle 100, or the noise-dampening and/or vibration-dampening characteristics may be tuned to a desired degree. The elastomer layers 104 may be placed at various positions throughout the paddle 100 such that the elastomer layers 104 absorb and dissipate vibrations generated upon impact with a pickleball. This reduces and/or minimizes hand fatigue and enhances player comfort, resulting in a better playing experience for the player.

Further, the elastic properties of the elastomer layers 104 provide for a rebounding or “trampoline effect” that increases an exit velocity off the face of the paddle 100 and overall shot power. Thus, more power may be achieved from the elastomer layers 104 of the paddle 100 despite the noise-dampening and/or vibration-dampening characteristics that are also achieved.

Still further, the elastomer layers 104 improve ball control in addition to or despite the advantages achieved in power and noise-dampening, and/or vibration-dampening characteristics. The balanced performance of the paddles 100 described herein that incorporate the elastomer layers 104, rather than improving a single aspect of play at the expense of others, simultaneously enhances power, control, and comfort.

Even still further, the incorporation of the elastomer layers 104 in the paddles 100 described herein may be used to tune a paddle to a specific user or otherwise make a bespoke paddle. For example, the ability to use various elastomer materials within the elastomer layers 104, various amounts of elastomer in the elastomer layers 104, various thicknesses of the elastomer layers 104, various numbers of elastomer layers 104 within in the paddle 100, numbers of different types of elastomer layers 104 in the paddle 100, densities of the elastomer layers 104, other physical and chemical variations in the elastomer layers 104, and combinations thereof allows for customization of the paddle 100 based on player preference and/or playing conditions.

The elastomer layers 104 may be adhered to the core 102 using any process and/or materials. For example, the elastomer layers 104 may be adhered to the core 102 via an adhesive. Further, the elastomer layers 104 may be adhered to the core 102 using, for example, application of heat. In an embodiment, the elastomer layers 104 may not be adhered to the core 102, but may, instead, be held against the core 102 and within the paddle 100 via the use of pressure from other layers in the paddle 100 or the inclusion of a mechanical device used to keep the layers of the paddle 100 together such as a cap or edge guard. Further, in an embodiment, at least a portion of the elastomer layers 104 may be introduced into and/or adhered to internal portions of the honeycomb structures of the core 102 such that at least a portion of the elastomer of the elastomer layers 104 is embedded within the honeycomb structures of the core 102. Still further, in an embodiment, the elastomer layers 104 may be introduced into and/or adhered to internal portions of the honeycomb structures of the core 102 and/or may be included within the paddle 100 as a layer that abuts a side of the core 102.

In an embodiment, the elastomer layer 104 may be coupled to the core 102 via a manufacturing process that allows the elastomer layer 104 to be inserted into the honeycomb structures and/or the surface of the core 102 such as, for example, heating, mixing, reacting chemical constituents, stopping a reaction, curing, compression molding, injection molding, extrusion, transfer molding, rotational molding, and other manufacturing processes. For example, the elastomer layer 104 may be poured over the honeycomb structures and/or the surface of the core 102 to allow for at least an amount of the elastomer layer 104 to enter the honeycomb structures and/or to allow an amount of the elastomer layer to form a layer above an overall surface of the honeycomb structures of the core 102. The manner in which the elastomer layer 104 may be coupled to the core 102 may be applied to any examples of paddles described herein, where an elastomer layer 104 is coupled to a core 102 or any other layers of the paddles 100 described herein.

The paddle 100 may further include a first outer layer 106-1 and a second outer layer 106-2 (collectively referred to herein as outer layer(s) 106 unless specifically addressed otherwise). The outer layers 106 may be coupled to a respective one of the elastomer layers 104 on a side of the elastomer layers 104 opposite the core 102. In an embodiment, the first outer layer 106-1 may be coupled to a first side of the first elastomer layer 104-1 that is opposite a second side of the first elastomer layer 104-1 that faces the core 102. In an embodiment, the second outer layer 106-2 may be coupled to a first side of the second elastomer layer 104-2 that is opposite a second side of the second elastomer layer 104-2 that faces the core 102.

The outer layers 106 may be made of any material that may be suitable for pickleball play. For example, the outer layers 106 may include fiberglass, carbon fiber, or other material. Further, the outer layers 106 may be adhered to the elastomer layers 104 using any process and/or materials. For example, the outer layers 106 may be adhered to the elastomer layers 104 via an adhesive. Further, the outer layers 106 may be adhered to the elastomer layers 104 using, for example, application of heat. In an embodiment, the outer layers 106 may not be adhered to the elastomer layers 104, but may, instead, be held against elastomer layers 104 and within the paddle 100 via the use of pressure from other layers in the paddle 100 or the inclusion of a mechanical device used to keep the layers of the paddle 100 together such as a cap or edge guard. Further, in an embodiment, the elastomer layers 104 may be coupled to the core 102 via the material aspects of the elastomer layer 304 itself, such as the adhesive properties of the elastomer.

FIG. 2 illustrates an exploded, isometric view of a paddle 200, according to an example of the principles described herein. In contrast to the paddle 100 of FIG. 1, the paddle 200 of FIG. 2 may include additional layers of material to increase the noise-dampening and/or vibration-dampening characteristics of the paddle 200 or tune the noise-dampening and/or vibration-dampening characteristics to a desired degree. The paddle 200 of FIG. 2 may include a core 202 such as, for example, a honeycomb core as described herein. A first intermediate layer 204-1 may be coupled to a first side of the core 202. Further, a second intermediate layer 204-2 may be coupled to a second side of the core 202 opposite the first side, where the first intermediate layer 204-1 is coupled to the core 202.

A third intermediate layer 206-1 may be coupled to the first intermediate layer 204-1 opposite the side of the first intermediate layer 204-1 that is coupled to the core 202. Further, a fourth intermediate layer 206-2 may be coupled to the second intermediate layer 204-2 opposite the side of the second intermediate layer 204-2 that is coupled to the core 202.

In an embodiment, the first intermediate layer 204-1, the second intermediate layer 204-2, the third intermediate layer 206-1, and/or the fourth intermediate layer 206-2 may include any material that provides the advantages described herein, such as noise-dampening, vibration-dampening, increased power, and/or increased control. Thus, the first intermediate layer 204-1, the second intermediate layer 204-2, the third intermediate layer 206-1 and the fourth intermediate layer 206-2 may include the elastomer as described above in connection with the elastomer layers 104 of FIG. 1. In this example, the first intermediate layer 204-1 and/or the second intermediate layer 204-2 may include a first type of elastomer, and the third intermediate layer 206-1 and/or the fourth intermediate layer 206-2 may include a second type of elastomer. This double layer of differing elastomer layers may allow for the tuning of the target qualities of, for example, noise-dampening, vibration-dampening, increased power, increased control, and/or increased comfort to the player as described herein.

In an embodiment, the first intermediate layer 204-1 and the second intermediate layer 204-2, or the third intermediate layer 206-1 and the fourth intermediate layer 206-2 may include a non-elastomer material. In this example, the first intermediate layer 204-1 and the second intermediate layer 204-2, or the third intermediate layer 206-1 and the fourth intermediate layer 206-2 may include a woven or non-woven fabric and may impart a desired level of acoustic and/or vibration-dampening to the paddle 200 as described herein. As used in the present specification and in the appended claims, the term “woven fabric” is meant to be understood broadly as any fabric constructed by weaving a fabric material at angles (e.g., a 90° angle) with vertical fibers called “warp” threads and “weft” threads weaved through the warp threads along the horizontal width of the textile. As used in the present specification and in the appended claims, the term “non-woven fabric” is meant to be understood broadly as any fabric created through a process of bonding fibers together such as, for example, by chemical adhesion, mechanical or heat treatment, other forms of fiber bonding, and combinations thereof. The fabric may be made from linens, silks, wools, cottons, chiffons, leathers, polyesters, satins, canvases, crepe fabrics, velvets, laces, Rayon, Spandex, bamboo, cashmere, denim, hemp, muslin, other fabric materials, and combinations thereof. In this manner, the different sets of layers within the paddle 200 may be different from one another to achieve desired advantages and characteristics as described herein. Further, in an embodiment, the woven or non-woven fabrics may include one or more of the properties described above in connection with the elastomer layers and Equations 1 through 34.

Further, the first intermediate layer 204-1 and the second intermediate layer 204-2, or the third intermediate layer 206-1 and the fourth intermediate layer 206-2 may include fiberglass, carbon fiber, metals, metal alloys, Kevlar, ceramic, wood, or other materials that may be advantageous when utilized along with an elastomer layer.

The paddle 200 may further include a first outer layer 208-1 coupled to the third intermediate layer 206-1 opposite the side of the third intermediate layer 206-1 that is coupled to the first intermediate layer 204-1. Further, the paddle 200 may include a second outer layer 208-2 coupled to the fourth intermediate layer 206-2 opposite the side of the fourth intermediate layer 206-2 that is coupled to the second intermediate layer 204-2. The first outer layer 208-1 and the second outer layer 208-2 may be made of any material that may be suitable for pickleball play. For example, the first outer layer 208-1 and the second outer layer 208-2 may include fiberglass, carbon fiber, or other material. Further, the first outer layer 208-1 and the second outer layer 208-2 may be adhered to the third intermediate layer 206-1 and the fourth intermediate layer 206-2, respectively, using any process and/or materials. For example, the first outer layer 208-1 and the second outer layer 208-2 may be adhered to the third intermediate layer 206-1 and the fourth intermediate layer 206-2 via an adhesive. Further, the first outer layer 208-1 and the second outer layer 208-2 may be adhered to the third intermediate layer 206-1 and the fourth intermediate layer 206-2 using, for example, application of heat. In an embodiment, the first outer layer 208-1 and the second outer layer 208-2 may not be adhered to the third intermediate layer 206-1 and the fourth intermediate layer 206-2, but may, instead, be held against the third intermediate layer 206-1 and the fourth intermediate layer 206-2 and within the paddle 200 via the use of pressure from other layers in the paddle 200 or the inclusion of a mechanical device used to keep the layers of the paddle 200 together such as a cap or edge guard. Further, in an embodiment, the elastomer layers described herein in connection with the first outer layer 208-1, the second outer layer 208-2, the third intermediate layer 206-1, and/or the fourth intermediate layer 206-2 may be coupled to the core 102 via the material aspects of the elastomer layer itself such as the adhesive properties of the elastomer.

As described above, the paddle 200 of FIG. 2 may differ from the paddle 100 of FIG. 1 by the inclusion of two additional layers including the first intermediate layer 204-1 and the second intermediate layer 204-2 or the third intermediate layer 206-1 and the fourth intermediate layer 206-2. Thus, while the paddle 100 of FIG. 1 includes a core 102, elastomer layers 104 surrounding the core 102, and outer layers 106 for the outside of the paddle 100, the paddle 200 of FIG. 2 includes a core 202 with two additional intermediate layers (e.g., first intermediate layer 204-1 and the second intermediate layer 204-2, or the third intermediate layer 206-1 and the fourth intermediate layer 206-2) on each of the two sides of the paddle 200 with the first outer layer 208-1 and the second outer layer 208-2 located on the outer surfaces of the paddle 200. Thus, although paddles described herein include specific numbers of intermediate layers between a core and outer layers, any number of intermediate layers may be included within the paddles to achieve the target qualities of, for example, noise-dampening, vibration-dampening, increased power, increased control, and/or increased comfort to the player as described herein.

The example paddles 100, 200 of FIGS. 1 and 2 include elastomer layers used to achieve the desired noise-dampening, vibration-dampening, increased power, increased control, and/or increased comfort to the player characteristics of the paddles 100, 200. FIG. 3 illustrates an exploded, isometric view of a paddle 300, according to an example of the principles described herein. The paddle 300 of FIG. 3, in contrast to the paddles 100, 200 of FIGS. 1 and 2, utilizes an elastomer layer to achieve the desired noise-dampening, vibration-dampening, increased power, increased control, and/or increased comfort to the player characteristics of the paddle.

The paddle 300 of FIG. 3 may include a first core 302-1 and a second core 302-2. The dual core architecture of the paddle 300 may allow for an elastomer layer 304 to be inserted between the first core 302-1 and the second core 302-2. In an embodiment, a thickness of the first core 302-1 and a second core 302-2 together may be approximately equal to the thickness of, for example, one of the cores 102, 202 of the FIGS. 1 and 2. The elastomer layer 304 may be coupled to the first core 302-1 and the second core 302-2 using any coupling means or method such as, for example adhesives or through mechanical coupling. In an embodiment, the elastomer layer 304 may be coupled to the first core 302-1 and the second core 302-2 via the material aspects of the elastomer layer 304 itself such as its adhesive properties. Further, in an embodiment, the elastomer layer 304 may be coupled to the first core 302-1 and the second core 302-2 via a manufacturing process that allows the elastomer layer 304 to be inserted into the honeycomb structures of the first core 302-1 and the second core 302-2 and/or layered on top of the overall surface of the first core 302-1 and the second core 302-2 as described herein. The elastomer layer 304 may include, for example, the qualities of the elastomer layers 104, 204, and/or 206 of FIGS. 1 and 2.

In addition to the elastomer layer 304 inserted between the first core 302-1 and the second core 302-2, the paddle 300 of FIG. 3 may include a first outer layer 306-1 coupled to the first core 302-1 opposite the side of the first core 302-1 that is coupled to the elastomer layer 304. Further, the paddle 300 may include a second outer layer 306-2 coupled to the second core 302-2 opposite the side of the second core 302-2 that is coupled to the elastomer layer 304. The first outer layer 306-1 and the second outer layer 306-2 may be made of any material that may be suitable for pickleball play. For example, the first outer layer 306-1 and the second outer layer 306-2 may include fiberglass, carbon fiber, or other materials described herein. Further, the first outer layer 306-1 and the second outer layer 306-2 may be adhered to the first core 302-1 and the second core 302-2, respectively, using any process and/or materials. For example, the first outer layer 306-1 and the second outer layer 306-2 may be adhered to the first core 302-1 and the second core 302-2 via an adhesive. Further, the first outer layer 306-1 and the second outer layer 306-2 may be adhered to the first core 302-1 and the second core 302-2 using, for example, application of heat. In an embodiment, the first outer layer 306-1 and the second outer layer 306-2 may not be adhered to the first core 302-1 and the second core 302-2, but may, instead, be held against first core 302-1 and the second core 302-2 and within the paddle 300 via the use of pressure from other layers in the paddle 300 or the inclusion of a mechanical device used to keep the layers of the paddle 300 together such as a cap or edge guard.

FIG. 4 illustrates an exploded, isometric view of a paddle 400, according to an example of the principles described herein. The paddle 400 of FIG. 4 may differ from the paddle 300 of FIG. 3 in that the paddle 400 of FIG. 4 may include one or more intermediate layers. The one or more intermediate layers may include elastomer layers or other layers of materials as described herein.

The paddle 400 of FIG. 4 may include a first core 402-1 and a second core 402-2. The dual core architecture of the paddle 400 may allow for an elastomer layer 404 to be inserted between the first core 402-1 and the second core 402-2. In an embodiment, a thickness of the first core 402-1 and a second core 402-2 together may be approximately equal to the thickness of, for example, one of the cores 102, 202 of the FIGS. 1 and 2. The elastomer layer 404 may be coupled to the first core 402-1 and the second core 402-2 using any coupling means or method such as, for example adhesives or through mechanical coupling. In an embodiment, the elastomer layer 404 may be coupled to the first core 402-1 and the second core 402-2 via the material aspects of the elastomer layer 404 itself such as its adhesive properties. The elastomer layer 404 may include, for example, the qualities of the elastomer layers 104, 204, and/or 206 of FIGS. 1 and 2.

The paddle 400 of FIG. 4 may further include a first intermediate layer 406-1 and a second intermediate layer 406-2. The first intermediate layer 406-1 may be coupled to the first core 402-1 on a side of the first core 402-1 opposite the side of the first core 402-1 that is coupled to the elastomer layer 404. Similarly, the second intermediate layer 406-2 may be coupled to the second core 402-2 on a side of the second core 402-2 opposite the side of the second core 402-2 that is coupled to the elastomer layer 404. In an embodiment, the first intermediate layer 406-1 and the second intermediate layer 406-2 may be adhered to their respective first core 402-1 or second core 402-2 using any process and/or materials as described herein. For example, the first intermediate layer 406-1 and the second intermediate layer 406-2 may be adhered to the core 102 via an adhesive. Further, the first intermediate layer 406-1 and the second intermediate layer 406-2 may be adhered to their respective first core 402-1 or second core 402-2 using, for example, application of heat. In an embodiment, the first intermediate layer 406-1 and the second intermediate layer 406-2 may be adhered to their respective first core 402-1 or second core 402-2, but may, instead, be held against the first core 402-1 or second core 402-2 and within the paddle 400 via the use of pressure from other layers in the paddle 400 or the inclusion of a mechanical device used to keep the layers of the paddle 400 together such as a cap or edge guard.

The first intermediate layer 406-1 and the second intermediate layer 406-2 may include an elastomer layer as described herein including a same, similar, or different elastomer with respect to the elastomer of the elastomer layer 404 included between the first core 402-1 and the second core 402-2. Further, in an embodiment, the first intermediate layer 406-1 and the second intermediate layer 406-2 may include woven fabric, non-woven fabric, fiberglass, carbon fiber, metals, metal alloys, wood, or other materials that may be advantageous when utilized along with an elastomer layer.

The paddle 400 may further include a first outer layer 408-1 and a second outer layer 408-2. The first outer layer 408-1 and the second outer layer 408-2 may be coupled to a respective one of the first intermediate layer 406-1 and the second intermediate layer 406-2 on a side of the first intermediate layer 406-1 and the second intermediate layer 406-2 opposite their respective first core 402-1 or second core 402-2. In an embodiment, the first outer layer 408-1 may be coupled to a first side of the first intermediate layer 406-1 that is opposite a second side of the first intermediate layer 406-1 that faces the first core 402-1. In an embodiment, the second outer layer 408-2 may be coupled to a first side of the second intermediate layer 406-2 that is opposite a second side of the second intermediate layer 406-2 that faces the second core 402-2. The first outer layer 408-1 and the second outer layer 408-2 may be made of any material that may be suitable for pickleball play. For example, the first outer layer 408-1 and the second outer layer 408-2 may include fiberglass, carbon fiber, or other material. In an embodiment, the first outer layer 408-1 and the second outer layer 408-2 may be adhered to their respective first intermediate layer 406-1 and second intermediate layer 406-2 using any process and/or materials. For example, the first outer layer 408-1 and the second outer layer 408-2 may be adhered to their respective first intermediate layer 406-1 and second intermediate layer 406-2 via an adhesive. Further, the first outer layer 408-1 and the second outer layer 408-2 may be adhered to their respective first intermediate layer 406-1 and second intermediate layer 406-2 using, for example, application of heat. In an embodiment, the first outer layer 408-1 and the second outer layer 408-2 may not be adhered to their respective first intermediate layer 406-1 and second intermediate layer 406-2, but may, instead, be held against the first intermediate layer 406-1 and the second intermediate layer 406-2 and within the paddle 400 via the use of pressure from other layers in the paddle 400 or the inclusion of a mechanical device used to keep the layers of the paddle 400 together such as a cap or edge guard.

FIG. 5 illustrates an isometric view of a core 502 of a paddle including an elastomer layer 504 coupled to a portion thereof, according to an example of the principles described herein. FIG. 6 illustrates a side view of the core of the paddle of FIG. 5, according to an example of the principles described herein. As described herein, the core 502 may include a honeycomb structure 506 including a block of extruded profiles or extruded tubes having a variety of cell diameters, thicknesses and densities from which honeycomb sheets that form the core 502 may be sliced.

In an embodiment, the elastomer layer 504 may be applied to at least a portion of the core 502. In the example depicted in FIGS. 5 and 6, the elastomer layer 504 may be applied to less than all the core 502 such as, for example, an interior portion of the core 502 such that the elastomer layer 504 does not extend to one or more edges of the core 502. However, in an embodiment, the elastomer layer 504 may be applied to an entirety of a surface of the core 502 including a breadth and width of the core 502. As described herein, the “surface” of the core 502 may be described as a plane that lies above an extent of the honeycomb structures 506 of the core 502. With this understanding, the elastomer layer 504 may be applied to an entirety of the surface of the core 502 or less than an entirety of the surface of the core 502.

Further, a described herein, the elastomer layer 504 may be applied to the core 502 such that an amount of the elastomer of the elastomer layer 504 is introduced into and/or adhered to internal portions of the honeycomb structures 506 of the core 102 past or below the surface of the core 502. In this manner, the elastomer of the elastomer layer 504 may be embedded within the honeycomb structures 506 of the core 102. An example of the elastomer layer 504 being included in the honeycomb structures 506 of the core 102 is depicted in FIG. 6, for example. FIG. 6 depicts several examples of depth penetration the elastomer layer 504 is caused to be positioned within the honeycomb structures 506 of the core 102.

For example, there may be areas 602-1, 602-2, 602-3, 602-4, 602-5, 602-6, 602-7, 602-8, 602-9, 602-10, 602-N, where N is any integer greater than or equal to 1 (collectively referred to herein as area(s) 602 unless specifically addressed otherwise) of the core 502. In an embodiment, the areas 602 may include areas 602 where the elastomer layer 504 is not applied such as areas 602-1 and 602-N as depicted at the ends of the core 502 in FIG. 6. Further, the areas 602 may include areas 602 where the elastomer layer 504 is applied to the surface of the core 502 but not within the honeycomb structures 506 of the core 102 such as areas 602-2 and 602-10.

The areas 602 may also include areas 602 where the elastomer layer 504 is applied to the surface of the core 502 and is allowed or caused to also be applied to or move into the honeycomb structures 506 of the core 102 such as areas 602-3 through and 602-9. Further, as depicted in FIG. 6, the degree to which the elastomer layer 504 is allowed or caused to also be applied to or move into the honeycomb structures 506 of the core 102 may vary. The example of FIG. 6 depicts four different degrees in which the elastomer layer 504 allowed or caused to also be applied to or move into the honeycomb structures 506 of the core 102 is depicted. However, any number of degrees may be used to obtain varying degrees of elastomer penetration into the honeycomb structures 506 of the core 102. By way of example, a first degree is depicted in connection with areas 602-3 and 602-9. Further, a second degree is depicted in connection with areas 602-4 and 602-8 that is greater in degree than the first degree. Still further, a third degree is depicted in connection with areas 602-5 and 602-7 that is greater in degree than the second degree. Even still further, a fourth degree is depicted in connection with area 602-6 that is greater in degree than the third degree. In an embodiment, area 602-6 may include an instance where the elastomer layer 504 extends through an entirety of the honeycomb structures 506 of the core 102. However, in an embodiment, the elastomer layer 504 may extend through an entirety of the honeycomb structures 506 of the core 102 and through to an opposite side of the core 102 and may even be caused to form an additional elastomer layer 504 applied to the opposite side of the core 102. Further, although FIG. 6 is depicted as including a gradient of degrees of elastomer towards a center of the core 502, any pattern of degrees may be used to obtain various qualities. For example, the least amount of elastomer of the elastomer layer 504 may be introduced into the honeycomb structure 506 at area 602-6 and the gradient of elastomer may extend therefrom with increasing amounts of elastomer introduced into the honeycomb structure 506 through the elastomer layer 504.

In an embodiment, the elastomer layer may be applied to the COP of the core 502 as described herein in order to support the COP. Further, a gradient may be created by the degrees by which the elastomer layer 504 extends into the honeycomb structures 506 of the core 102. In this example, the elastomer layer 504 may be applied to the interior portions of the honeycomb structures 506 of the core 502 such that the COP is supported by more or less elastomer provided by the elastomer layer 504. For example, as depicted in FIG. 6, the COP may be supported by allowing the elastomer of the elastomer layer 504 or causing the elastomer of the elastomer layer 504 to be applied to or move into the honeycomb structures 506 of the core 102 at the different degrees as provided by the different areas 602. The width or extent of the elastomer of each area 602 may be adjusted to provide a personalized or bespoke paddle with a COP that a specific user may desire.

Further, in an embodiment, although FIG. 6 depicts the elastomer of the elastomer layer 504 being applied to a single side of the core 502 formed on a single side of the core 502, the elastomer of the elastomer layer 504 may be applied to both sides of the core 502 to ensure that the elastomer of the elastomer layer 504 is effective to support the COP irrespective of which side of the finished paddle the user strikes the pickleball. An example of the elastomer layer 504 being applied to both sides of the core 502 is depicted in FIG. 7. FIG. 7 illustrates a side view of the core of the paddle of FIG. 5 with two different elastomer layers 504 on opposite sides of the core 502. Introducing an amount of the elastomer of the elastomer layer 504 into the honeycomb structures 506 of the core 102 may allow for the tuning of the paddle as to noise-dampening, vibration-dampening, increased power, increased control, and/or increased comfort as described herein.

In an embodiment, the elastomer layer 504 may be applied to the core 502 in an uncured or un-crosslinked state. In this state, the elastomer of the elastomer layer 504 may freely flow into at least a portion of the honeycomb structures 506 of the core 102 due to the relatively less viscous nature of the uncured or un-crosslinked elastomer. Further, in an embodiment, an additional amount of the uncured or un-crosslinked elastomer of the elastomer layer 504 may be built up on top of the overall surface of the core 502 to create a distinct layer of the elastomer over at least a width or length of the core 502.

Once the elastomer layer 504 is deposited on the core 502, the elastomer may be cured or crosslinked through the application of heat, crosslinking chemicals (e.g., peroxides, platinum-based catalysts, etc.), electromagnetic radiation (e.g., ultraviolet (UV) electromagnetic radiation), or via other curing or crosslinking processes. In an embodiment, the curing or crosslinking process of the elastomer layer 504 may be performed before other layers such as the intermediate layers and outer layers are applied to the core 502. In this example, the curing or crosslinking process may take place and additional layers such as the intermediate layers and outer layers may be applied to form the paddle. The additional layers including any intermediate layers and the outer layers may be coupled to the core 502 and the elastomer layer 504 through any manufacturing process described herein.

Further, in an embodiment, the curing or crosslinking process of the elastomer layer 504 may be performed once one or more additional layers are applied to the core 502 or when all the layers in the paddle are coupled or arranged. In this example, one or more of the intermediate layers and the outer layers may be arranged with the elastomer layer 504 and the core 502 and the arranged elements may be coupled to one another through any of the manufacturing process described herein. For example, the uncured or un-crosslinked elastomer layer 504, the core 502, the outer layers and any intermediate layers may be arranged together within a mold, and heat, chemicals, or electromagnetic radiation may be applied to the arranged layers to form the paddle in a single instance. In an embodiment, the honeycomb structure of the core 502 may be made of a transparent or semi-transparent material that allows for electromagnetic radiation to pass through the core 502 and allow an uncured or un-crosslinked elastomer layer 504 to be cured or crosslinked.

Throughout the present description, the multiple layers or portions of the paddle including outer layers, intermediate layers, and cores may be coupled to one another via adhesives including, for example, heat-activated adhesives (HAA), pressure-sensitive adhesives (PSA), room temperature vulcanizing (RTV) adhesives, cyanoacrylates, chemical adhesives, and other types of adhesives. Further, in an embodiment, the multiple layers or portions of the paddle including outer layers, intermediate layers, and cores may be coupled to one another via a surface treatment such as the use of plasma, corona, combustion chemical vapor deposition (e.g., Pyrosil), or flame treatment to create reactive chemical groups on the surfaces of the layers of the paddle. Further, in an embodiment, the multiple layers or portions of the paddle including outer layers, intermediate layers, and cores may be coupled to one another via a molding process wherein one or more of the layers are placed in a mold and heat is applied to allow for materials of the layers to fuse and cure together.

Throughout the present description, the elastomer layers may be applied to less than an entirety of the paddle. For example, the elastomer layers may be applied to a center of percussion (COP) of the paddle; a point on the surface of the paddle that pivots around a fixed point where a perpendicular impact will not cause a reaction at the pivot. In an embodiment, the elastomer layers may be applied to a portion of the paddle that is not the COP. Still further, the elastomer layers may be applied to a body portion of the paddle as opposed to a handle portion of the paddle. Further, in an embodiment, the elastomer layers may be applied to the paddle at varying thicknesses across a length and/or width of the paddle. Still further, in an embodiment, the elastomer layers may be applied to the paddle at discrete locations along a length and/or width of the paddle.

CONCLUSION

The examples described herein provide a pickleball paddle including a core and an elastomer layer coupled to the core. The pickleball paddle may further include an outer layer coupled to the core, the elastomer layer, and combinations thereof. The core may include a honeycomb structure. The elastomer layer may be embedded within at least a portion of the honeycomb structure of the core. The elastomer layer may be coupled to at least a portion of the honeycomb structure of the core. The elastomer layer may include a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, and combinations thereof. The pickleball paddle that includes at least one elastomer layer in addition to a core and outer layers of the pickleball paddle imparts noise-dampening and/or vibration-dampening qualities to the pickleball paddle while increasing power and control in the pickleball paddle.

While the present systems and methods are described with respect to the specific examples, it is to be understood that the scope of the present systems and methods is not limited to these specific examples. Since other modifications and changes varied to fit particular operating requirements and environments will be apparent to those skilled in the art, the present systems and methods are not considered limited to the example chosen for purposes of disclosure and cover all changes and modifications which do not constitute departures from the true spirit and scope of the present systems and methods.

Although the application describes examples having specific structural features and/or methodological acts, it is to be understood that the claims are not necessarily limited to the specific features or acts described. Rather, the specific features and acts are merely illustrative of some examples that fall within the scope of the claims of the application.

Claims

1. A pickleball paddle comprising:

a core; and

an elastomer layer coupled to the core.

2. The pickleball paddle of claim 1, further comprising an outer layer coupled to the core, the elastomer layer, or combinations thereof.

3. The pickleball paddle of claim 1, wherein the core comprises a honeycomb structure.

4. The pickleball paddle of claim 3, wherein the elastomer layer is embedded within at least a portion of the honeycomb structure of the core.

5. The pickleball paddle of claim 3, wherein the elastomer layer is coupled to at least a portion of the honeycomb structure of the core.

6. The pickleball paddle of claim 1, wherein the elastomer layer comprises:

a first elastomer layer coupled to a first side of the core; and

a second elastomer layer coupled to a second side of the core.

7. The pickleball paddle of claim 1, wherein the elastomer layer comprises a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, or combinations thereof.

8. The pickleball paddle of claim 2, wherein:

the elastomer layer comprises:

a first elastomer layer coupled to a first side of the core; and

a second elastomer layer coupled to a second side of the core; and

the outer layer comprises:

a first outer layer coupled to a side of the first elastomer layer opposite the core; and

a second outer layer coupled to a side of the second elastomer layer opposite the core.

9. The pickleball paddle of claim 2, wherein the outer layer comprises fiberglass.

10. The pickleball paddle of claim 2, wherein the outer layer comprises carbon fiber.

11. A pickleball paddle comprising:

a core;

an intermediate layer coupled to the core; and

an elastomer layer coupled to the intermediate layer.

12. The pickleball paddle of claim 11, wherein the core comprises a honeycomb structure.

13. The pickleball paddle of claim 12, wherein the elastomer layer is embedded within at least a portion of the honeycomb structure of the core.

14. The pickleball paddle of claim 12, wherein the elastomer layer is coupled to at least a portion of the honeycomb structure of the core.

15. The pickleball paddle of claim 11, wherein the elastomer layer comprises a thermoplastic elastomer (TPE) layer, a thermoplastic polyurethane (TPU) layer, a silicone layer, a polyether block amide (PEBA) layer, an ethylene propylene diene monomer (EPDM) layer, or combinations thereof.

16. The pickleball paddle of claim 11, wherein the intermediate layer comprises:

a first intermediate layer coupled to a first side of the core; and

a second intermediate layer coupled to a second side of the core.

17. The pickleball paddle of claim 16, wherein the elastomer layer comprises:

a first elastomer layer coupled to the first intermediate layer opposite the core; and

a second elastomer layer coupled to the second intermediate layer opposite the core.

18. The pickleball paddle of claim 16, wherein the first intermediate layer, the second intermediate layer, or combinations thereof comprises a woven fabric.

19. The pickleball paddle of claim 16, wherein the first intermediate layer, the second intermediate layer, or combinations thereof comprises a non-woven fabric.

20. The pickleball paddle of claim 17, further comprising an outer layer coupled to the elastomer layer.

21.-58. (canceled)

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