Patents-Review.com
ClassID:

71943 ⎘

B64C11/008 - CPC Classification

Classification description:

Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft characterised by vibration absorbing or balancing means

Recent Application in this class:
#1
20260109450
2026-04-23

TAIL-ROTOR VIBRATION DAMPENER SYSTEM

 #2
20260084805
2026-03-26

PROPELLER PROPULSION SYSTEM FOR AIRCRAFT INCLUDING MEANS FOR ADJUSTING THE BLADE ANGLE OF THE BLADES OF THE PROPELLER AND AIRCRAFT INCLUDING SUCH A PROPULSION SYSTEM

 #3
20260035080
2026-02-05

AIRCRAFT WITH AN UNDUCTED FAN PROPULSOR

 #4
20250289562
2025-09-18

PROPELLER ASSEMBLY

 #5
20250196995
2025-06-19

INERTIAL WEIGHT SYSTEM FOR MAIN ROTOR BLADES

 #6
20250100703
2025-03-27

AIRCRAFT PROPELLER DRIVE SYSTEM

 #7
20250100673
2025-03-27

METHOD FOR CORRECTING THE RADIAL MOMENT WEIGHT OF A VANE FOR AN AIRCRAFT TURBINE ENGINE

 #8
20240425173
2024-12-26

Disk Tuned Vibration Absorber

 #9
20240375763
2024-11-14

ROTATING AIRFOIL ASSEMBLY

 #10
20240059408
2024-02-22

Rotary wing air vehicle

 #11
20230415882
2023-12-28

High impact-resistant, reinforced fiber for leading edge protection of aerodynamic structures

 #12
20230406483
2023-12-21

Acoustic noise suppressing ducted fan propulsor mounting arrangement and treatments

 #13
20230331377
2023-10-19

Rotor Blade Tracking Wedge with Porous Elements

 #14
20230322359
2023-10-12

Ram air turbine including damping element to vary natural frequency

 #15
20230303238
2023-09-28

Rotating airfoil assembly

 #16
20230271695
2023-08-31

TURBINE ENGINE MODULE EQUIPPED WITH A PROPELLER AND STATOR VANES SUPPORTED BY RETAINING MEANS AND CORRESPONDING TURBINE ENGINE

 #17
20230249802
2023-08-10

Propeller provided with interchangeable blades and a method of mounting interchangeable blades on a propeller

 #18
20220355924
2022-11-10

Rotor assembly with static mast and pivoting rotor hub

 #19
20220235841
2022-07-28

TWO-MODE TUNED VIBRATION ABSORBER

 #20
20220194567
2022-06-23

Vibration attenuator

 #21
20220119095
2022-04-21

SYSTEM AND METHOD FOR PROPELLER BALANCING

 #22
20210309346
2021-10-07

SELECTING PROPELLERS FOR PERFORMANCE AND NOISE SHAPING

 #23
20210139133
2021-05-13

Ultra-quiet propeller system

 #24
20210107623
2021-04-15

Acoustic noise suppressing ducted fan propulsor mounting arrangement and treatments

 #25
20200407045
2020-12-31

Propeller provided with interchangeable blades and a method of mounting interchangeable blades on a propeller

 #26
20200198806
2020-06-25

Propeller balancing using inflight data

 #27
20200189722
2020-06-18

Apparatus for controlling multi-rotor vehicle vibrations and related methods

 #28
20200130820
2020-04-30

Vibration attenuator

 #29
20200130813
2020-04-30

Method of improving a stability speed of a tiltrotor aircraft

 #30
20200108913
2020-04-09

Low-noise multi-propeller system

 #31
20200055587
2020-02-20

Pitch control system

 #32
20190300152
2019-10-03

Rotor hub with enforced collective coning

 #33
20190277364
2019-09-12

Two-mode tuned vibration absorber

 #34
20190193836
2019-06-27

High stiffness hub assemblies for rotor systems

 #35
20190135410
2019-05-09

Toroidal propeller

 #36
20190113052
2019-04-18

Blade with damping structures

 #37
20190047682
2019-02-14

Adjustable blade balance module

 #38
20190039726
2019-02-07

Rotor span-balance pocket

 #39
20180362153
2018-12-20

Zero-fastener flushmount balance weight system preserving rotor-blade tip with integral tuning weight retention feature

 #40
20180273160
2018-09-27

High stiffness hub assembly for proprotor systems

 #41
20180148158
2018-05-31

Acoustic abatement apparatus for an aircraft

 #42
20180135728
2018-05-17

Rotor blade weight system

 #43
20170297685
2017-10-19

Rotor hub vibration attenuator

 #44
20170297677
2017-10-19

Propeller assembly with at least two propeller blades

 #45
20170275027
2017-09-28

Propeller balancing using inflight data

 #46
20170174338
2017-06-22

Propeller surface area treatments for sound dampening

 #47
20170174319
2017-06-22

Propeller blade leading edge serrations for improved sound control

 #48
20170015413
2017-01-19

Magrail, bleed air driven lift fan

 #49
20160083075
2016-03-24

Aircraft

 #50
20150246721
2015-09-03

AIRCRAFT PROPELLERS

 #51
20150234396
2015-08-20

Devices, systems, and methods for balancing closely coupled rotating machinery

 #52
20150217853
2015-08-06

PARAMOTOR WITH DYNAMIC TORQUE COMPENSATION

 #53
20140360830
2014-12-11

Rotor hub vibration attenuator

 #54
20140322009
2014-10-30

Simplified propeller balancing system and method

 #55
20140286772
2014-09-25

Rotor hub vibration attenuator

 #56
20140169961
2014-06-19

Propeller rotor balancing system

 #57
20140102246
2014-04-17

Rotating assembly including a dynamic balancing system

 #58
20140064978
2014-03-06

Multi-Axis Balancing Propellers and Methods for Balancing Same

 #59
20130039765
2013-02-14

Aircraft propellers

 #60
20120328439
2012-12-27

Method for balancing a propulsive system having non-hull contra-rotating propellers

 #61
20120328433
2012-12-27

Method for balancing a propulsive system having non-hull contra-rotating propellers

 #62
20120269626
2012-10-25

Aircraft propeller balancing system

 #63
20120174699
2012-07-12

DEVICE FOR ADAPTIVE BALANCING OF ROTARY DEVICES

 #64
20110197703
2011-08-18

Aircraft propeller balancing system

 #65
20110194934
2011-08-11

Rotor hub vibration attenuator

 #66
20110189017
2011-08-04

Aircraft including an engine controlled by synchrophasing

 #67
20090306829
2009-12-10

Aircraft with transient-discriminating propeller balancing system

 #68
20080003107
2008-01-03

Rotational airfoil balance system

 #69
18646398
2026-04-14

Blade manufacturing for vertical take-off dual-engine aircraft

 #70
16214063
2019-09-17

Ultra-quiet propeller system

 #71
16141095
2021-12-07

Active vibration control for aerial vehicles

 #72
15078394
2017-07-04

Propeller balancing using inflight data