Patents-Review.com
ClassID:

72085 ⎘

B64C2027/003 - CPC Classification

Classification description:

Rotorcraft; Rotors peculiar thereto; Vibration damping devices mounted on rotor hub, e.g. a rotary force generator

Recent Application in this class:
#1
20240059404
2024-02-22

FORCE GENERATOR WITH CENTER ATTACHMENT AND/OR REDUNDANT ATTACHMENT POINTS

 #2
20230264839
2023-08-24

Active propeller system

 #3
20230059844
2023-02-23

Heated pendulum damper

 #4
20220258856
2022-08-18

Rotor for a hover-capable aircraft

 #5
20220258855
2022-08-18

Rotor for a hover-capable aircraft

 #6
20220250741
2022-08-11

Rotor for a hover-capable aircraft

 #7
20220194567
2022-06-23

Vibration attenuator

 #8
20220194566
2022-06-23

NOISE REDUCTION SYSTEM FOR AIR MOBILITY

 #9
20220169369
2022-06-02

LOW-NOISE ROTOR CONFIGURATIONS

 #10
20220126989
2022-04-28

Vibration attenuator

 #11
20210403148
2021-12-30

Vibration isolation systems for compound helicopters

 #12
20210362842
2021-11-25

Rotor hub vibration attenuator

 #13
20210291989
2021-09-23

Rotor hub fairing with integral cooling capabilities

 #14
20210139137
2021-05-13

Variable rotary pendulous mass vibration suppression system

 #15
20210001976
2021-01-07

Active vibration control system with non-concentric revolving masses

 #16
20200331597
2020-10-22

Main rotor damper elastomeric rod end

 #17
20200298969
2020-09-24

Structurally tunable cores

 #18
20200298968
2020-09-24

Rotor for a hover-capable aircraft and method for containment of vibrations transmitted to the mast of a rotor of a hover-capable aircraft

 #19
20200283132
2020-09-10

Systems and methods for reducing noise based on effective rotor area relative to a center of rotation

 #20
20200255132
2020-08-13

Vibration attenuator

 #21
20200239133
2020-07-30

Rotor hub vibration attenuator

 #22
20200207465
2020-07-02

Variable rotary radially supported mass vibration suppression system

 #23
20200200231
2020-06-25

ROTARY DAMPER

 #24
20200191237
2020-06-18

Variable rotary mass vibration suppression system

 #25
20200172233
2020-06-04

Systems and methods for controlling lift using contra-rotating rotors

 #26
20200161991
2020-05-21

Systems and methods for dynamically triggering independent stator coils to control pitch of a rotor blade

 #27
20200156779
2020-05-21

Systems and methods for independent pitch control of rotor blades of rotor assembly to achieve directional control

 #28
20200156773
2020-05-21

Vibration attenuator

 #29
20200148342
2020-05-14

Systems and methods for improved rotor assembly for use with a stator

 #30
20200148333
2020-05-14

Systems and methods for drive control of a magnetically levitated rotor

 #31
20200130820
2020-04-30

Vibration attenuator

 #32
20200017203
2020-01-16

Hub mounted vibration reduction system for coaxial rotor systems

 #33
20200001987
2020-01-02

Rotor hub vibration attenuator

 #34
20190382105
2019-12-19

Aerial system propulsion assembly and method of use

 #35
20190367163
2019-12-05

Hydroelastic damper, and an aircraft

 #36
20190352000
2019-11-21

Transmission for rotor for an aircraft capable of hovering

 #37
20190322361
2019-10-24

Planar vibration isolator

 #38
20190263512
2019-08-29

Vibration attenuator

 #39
20190144124
2019-05-16

Isolator devices, systems and methods for aircraft

 #40
20190100301
2019-04-04

Power assembly and aircraft

 #41
20190047690
2019-02-14

Vibration damping device and damping method for a rotor of an aircraft capable of hovering

 #42
20190039725
2019-02-07

Unmanned air vehicle

 #43
20180370621
2018-12-27

Active vibration control system with non-concentric revolving masses

 #44
20180327089
2018-11-15

Tail rotor integrated damper attachment

 #45
20180319485
2018-11-08

Integrated bifilar system that absorbs vibrations in both vertical and in-plane directions

 #46
20180093759
2018-04-05

Helicopter vibration control system and circular force generation systems for canceling vibrations

 #47
20170361926
2017-12-21

Method of balancing a main rotor hub

 #48
20170327307
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #49
20170327230
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #50
20170327229
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #51
20170327228
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #52
20170327226
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #53
20170327225
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #54
20170327221
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #55
20170327214
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #56
20170327213
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #57
20170327212
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #58
20170327211
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #59
20170327206
2017-11-16

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #60
20170305542
2017-10-26

Aerial system propulsion assembly and method of use

 #61
20170297738
2017-10-19

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #62
20170297685
2017-10-19

Rotor hub vibration attenuator

 #63
20170259911
2017-09-14

Rotor hub vibration attenuator

 #64
20170152032
2017-06-01

Multicopter-assisted system and method for launching and retrieving a fixed-wing aircraft

 #65
20170129598
2017-05-11

Rotor blade coupling device of a rotor head for a rotorcraft

 #66
20170129595
2017-05-11

Hub mounted vibration suppression system

 #67
20170088258
2017-03-30

Rotor head, a rotor, and a rotorcraft

 #68
20160325828
2016-11-10

Hub-based active vibration control systems, devices, and methods with offset imbalanced rotors

 #69
20160236773
2016-08-18

DYNAMIC PITCH ADJUSTMENT DEVICES, SYSTEMS, AND METHODS

 #70
20160195161
2016-07-07

Circular force generator (CFG) devices, systems, and methods having indirectly driven imbalanced rotors

 #71
20160137297
2016-05-19

Rotor dome, a rotor, and a rotorcraft

 #72
20160137296
2016-05-19

Rotor dome, a rotor, and a rotorcraft

 #73
20160046367
2016-02-18

Helicopter vibration control system and circular force generation systems for canceling vibrations

 #74
20150232174
2015-08-20

Hub-mounted active vibration control (HAVC) devices, systems, and methods

 #75
20150203196
2015-07-23

Active vibration control system with non-concentric revolving masses

 #76
20150175259
2015-06-25

Rotor hub for a rotorcraft

 #77
20150098801
2015-04-09

Hover aircraft rotor comprising a vibration damping device

 #78
20140360830
2014-12-11

Rotor hub vibration attenuator

 #79
20140286772
2014-09-25

Rotor hub vibration attenuator

 #80
20140217659
2014-08-07

Pneumatically augmented elastomeric damper for improved spring rate tuning

 #81
20130164132
2013-06-27

Dual frequency hub mounted vibration suppressor system

 #82
20120292434
2012-11-22

Six Degrees Of Freedom Vibration Suppression

 #83
20120269630
2012-10-25

Rotor damper device, and an associated rotor and aircraft

 #84
20120174699
2012-07-12

DEVICE FOR ADAPTIVE BALANCING OF ROTARY DEVICES

 #85
20120148409
2012-06-14

Rotor damper and tail rotor with such a rotor damper

 #86
20120141273
2012-06-07

Helicopter vibration control system and rotary force generator for canceling vibrations

 #87
20120136533
2012-05-31

Helicopter vibration control system and circular force generation systems for canceling vibrations

 #88
20110268573
2011-11-03

Device for reducing the vibration generated by a rotorcraft lift rotor, and a rotor hub provided with such a device

 #89
20110266104
2011-11-03

Device and process for oscillation insulation in a transmission path

 #90
20110259994
2011-10-27

HELICOPTER VIBRATION CONTROL SYSTEM AND ROTATING ASSEMBLY ROTARY FORCES GENERATORS FOR CANCELING VIBRATIONS

 #91
20110194934
2011-08-11

Rotor hub vibration attenuator

 #92
20110027081
2011-02-03

Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations

 #93
20100296931
2010-11-25

Distributed-mass device for reducing vibration generated by a rotorcraft lift rotor, and a rotor hub fitted with such a device

 #94
20100296930
2010-11-25

Concentrated-mass device for reducing vibration generated by a rotorcraft lift rotor, and a rotor hub fitted with such a device

 #95
20100221110
2010-09-02

Helicopter vibration control system and rotating assembly rotary forces generators for canceling vibrations

 #96
20100221096
2010-09-02

Computer system and program product for controlling vibrations

 #97
20100209242
2010-08-19

Rotor hub vibration attenuator

 #98
20100183442
2010-07-22

Helicopter rotor comprising a vibration damper, and method for updating the same

 #99
20100034655
2010-02-11

Helicopter hub mounted vibration control and circular force generation systems for canceling vibrations

 #100
20090236468
2009-09-24

Dual frequency hub mounted vibration suppressor system

 #101
20090035137
2009-02-05

Helicopter vibration control system and rotary force generator for canceling vibrations

 #102
20070156289
2007-07-05

Computer system and program product for controlling vibrations

 #103
20060222505
2006-10-05

Rotor system vibration absorber

 #104
20060083617
2006-04-20

Helicopter vibration control system and rotary force generator for canceling vibrations

 #105
17127855
2024-12-10

Anti-phase noise suppression rotor technologies