Shoe for canes and crutches

Description

II. BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to shoes for canes and crutches and, more particularly, to those shoes that mimic the movement of human ankle articulations.

2. Description of the Related Art

Several designs for shoes have been designed in the past. None of them, however, include a combination of parts that in addition to providing the necessary traction, permit a user to land, lean, and leave the supporting surface as if he/she had been using his/her foot and ankle.

III. SUMMARY OF THE INVENTION

It is one of the main objects of the present invention to provide a shoe for canes and crutches that substantially mimics or follows the movement of person's ankle.

It is another object of this invention to provide a shoe capable of providing traction and stability to a cane or crutches user.

It is still another object of the present invention to provide a shoe that is reliable.

Yet another object is to provide a shoe that is functional in any direction.

It is yet another object of this invention to provide such a shoe that is inexpensive to manufacture and maintain while retaining its effectiveness.

Further objects of the invention will be brought out in the following part of the specification, wherein detailed description is for the purpose of fully disclosing the invention without placing limitations thereon.

IV. BRIEF DESCRIPTION OF THE DRAWINGS

With the above and other related objects in view, the invention consists in the details of construction and combination of parts as will be more fully understood from the following description, when read in conjunction with the accompanying drawings in which:

FIG. 1 represents an elevated view of a shoe, subject of this application, upon landing on a supporting surface, before any force (weight) is applied.

FIG. 2 shows the shoe represented in the previous figure with the user's weight being applied at an approaching angle causing the waist portion 30 of shoe 10 to flex.

FIG. 3 illustrates shoe represented in the previous figure with the user's weight being applied perpendicularly.

FIG. 4 is a representation of the shoe 10 shown in the previous figure as the user's weight is being released and the waist portion 30 is flexed.

FIG. 5 shows the shoe 10 represented in the previous figure as the user releases the weight (force) applied to shoe 10.

FIG. 6 is a bottom view of shoe 10.

FIG. 7 is a top view of shoe 10.

FIG. 8 in an inclined view of the shoe.

V. DETAILED DESCRIPTION OF THE EMBODIMENTS OF THE INVENTION

Referring now to the drawings, where the present invention is generally referred to with numeral 10, it can be observed that it basically includes support base assembly 20 with frustoconical top 23 mounted thereon and connected to cup assembly 40 through waist portion 30. The distal end of a stick S is received, snuggly, within cup assembly 40, as seen in FIGS. 1 through 5. Base assembly 20 includes an underside 22, best seen in FIG. 6, with two pairs of arched pads 24, perpendicularly disposed with respect to each other. Pads 24 include serrations 25 that can be substituted for equivalent irregularities to enhance traction. Arched pads 24 permit a user more freedom than other configurations. The central portion 26 has preferably circular designs to avoid more traction or restriction in a given direction.

When a cane or crutch is used, a user's gait goes through different continuously linked stages that can be generally characterized as:

• • 1. Landing approach starting with initial contact of the shoe with a supporting surface, as shown in FIG. 1.
  • 2. Increasing rate of support during which a user increasingly applies his/her weight, as shown in FIG. 2.
  • 3. Maximum support corresponds to the substantially vertically position when maximum weight is typically applied. This is represented in FIG. 3.
  • 4. Decrease rate of support is experienced as the user leaves behind the contact area of the shoe and supporting surface, as seen in FIG. 4.
  • 5. Release or departing stage corresponds to the position just prior to eliminating the contact between the shoe and the supporting surface.

Shoe 10, as seen in FIGS. 1 through 5, basically mimics the different positions or stages through which a human ankle passes. Shoe 10 is made out of solid rubber, in one of the preferred embodiments. Cup assembly 40 has, in one of the embodiments, a frustoconical shape with open end 42 with opening 43 for receiving the end of stick S. Bottom end 46 also has a frustoconical shape and is integrally connected with upper end of top 23. The reduced waist of shoe 10 at the junction peripheral area acts as an integrated hinge to facilitate a resilient bending. The at rest straight portion of shoe 10 is proportionally changed with the force (weight) applied by user through stick S.

Users of canes and crutches do not necessarily apply their weight with shoes 10 pointing parallel to the path followed. Shoes 10 are typically rotated slightly outwardly. Therefore, underside 22 has a round shape and arched pads 24 extend outwardly from the periphery of underside 22 to increase the effective contact area in the landing approach stage. Reinforcement webs 27 extend perpendicularly from base assembly 20 to the inner surfaces 24a of pads 24.

The foregoing description conveys the best understanding of the objectives and advantages of the present invention. Different embodiments may be made of the inventive concept of this invention. It is to be understood that all matter disclosed herein is to be interpreted merely as illustrative, and not in a limiting sense.