ClassID:

72140

B64C27/59 - CPC Classification

Classification description:

Rotorcraft; Rotors peculiar thereto; Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement; Transmitting means mechanical

Sub-classes:
Recent Application in this class:
#1
20260125153
2026-05-07

BLADE PITCH DETECTION FOR AN AERIAL VEHICLE

#2
20260109453
2026-04-23

SYSTEM FOR TRANSMITTING COMMANDS TO A PLURALITY OF HYDRAULIC SERVO-ACTUATORS

#3
20240391585
2024-11-28

Aerial vehicle

#4
20240376939
2024-11-14

COVERING SYSTEM AND METHOD FOR A PITCH LINK OF A HELICOPTER

#5
20240270381
2024-08-15

ANTI-TORQUE ROTOR FOR A HELICOPTER

#6
20240270380
2024-08-15

ANTI-TORQUE ROTOR FOR A HELICOPTER

#7
20240132224
2024-04-25

Systems and methods for control allocation for electric vertical take-off and landing aircraft

#8
20240092482
2024-03-21

Method for transmitting power based on aerodynamic deceleration, structure and application thereof

#9
20230359226
2023-11-09

Unmanned system maneuver controller systems and methods

#10
20230271699
2023-08-31

Aerial vehicle

#11
20230220885
2023-07-13

Flexible coupling for joining metallic and composite drive shafts

#12
20230192284
2023-06-22

MAST DAMPENER FOR A ROTORCRAFT

#13
20230192283
2023-06-22

Connection between a pitch control unit arm and a pitch horn

#14
20230192278
2023-06-22

Bearing assembly

#15
20230121921
2023-04-20

Gearbox and associated aircraft

#16
20230037680
2023-02-09

Aerial vehicle

#17
20220380033
2022-12-01

Aircraft having at least one propeller and a rotary wing provided with two rotors carried by two half-wings

#18
20220355921
2022-11-10

Cyclic pitch angle adjustment apparatus

#19
20220340272
2022-10-27

Anti-torque rotor for a helicopter

#20
20220289368
2022-09-15

Precision blade pitch adjustment

#21
20220234747
2022-07-28

Systems and methods for control allocation for electric vertical take-off and landing aircraft

#22
20220119102
2022-04-21

Aerial vehicle

#23
20220073196
2022-03-10

Anti-torque rotor for a helicopter

#24
20210394895
2021-12-23

Passive tip gap management systems for ducted aircraft

#25
20210380232
2021-12-09

Pitch change linkage

#26
20210253230
2021-08-19

Rotor for a hover-capable aircraft and related method of control

#27
20210253229
2021-08-19

Rotor for a hover-capable aircraft and related method of control

#28
20210245871
2021-08-12

Rotorcraft autopilot and methods

#29
20210221497
2021-07-22

Lightweight low drag rotor pitch beam

#30
20210214076
2021-07-15

Flexured standpipes for aircraft propulsion assemblies

#31
20210107624
2021-04-15

Spring-loaded link

#32
20200102073
2020-04-02

Mast Dampener and Collective Pitch for a Rotocraft

#33
20200070967
2020-03-05

Redundant impact-resistant structure

#34
20200047906
2020-02-13

Invertible aircraft

#35
20200001992
2020-01-02

Redundant helicopter pitch change bearing

#36
20190352003
2019-11-21

Rotorcraft autopilot and methods

#37
20190310025
2019-10-10

Cooling system for heat generating components in a fairing

#38
20190263514
2019-08-29

Passive pitch angle adjustment apparatus

#39
20190256206
2019-08-22

Gear-driven axial modulating mechanism for rotating shafts realizing a controllable pitch propeller/fan

#40
20190193850
2019-06-27

Rotor for a hover-capable aircraft and related method of control

#41
20190161179
2019-05-30

Helicopter rotor head, multirotor helicopter, and helicopter

#42
20190144110
2019-05-16

Cycloidal rotor or propeller with performance and flows optimization

#43
20190127057
2019-05-02

Emergency collective actuator and method for a helicopter

#44
20190061926
2019-02-28

Low moment rotor hub

#45
20190031318
2019-01-31

Propeller arrangement for an aircraft

#46
20190023383
2019-01-24

Tilting coaxial rotor for a rotary wing aircraft

#47
20190017750
2019-01-17

Cooling system for rotor blade actuators

#48
20180346110
2018-12-06

Rotorcraft autopilot system, components and methods

#49
20180334243
2018-11-22

Propulsion device

#50
20180257766
2018-09-13

Rotor assembly apparatus

#51
20180244379
2018-08-30

Dual-input mechanical bypass linkage apparatus and methods

#52
20180208303
2018-07-26

Advanced emergency collective actuator with friction pull-off and method for a helicopter

#53
20180194462
2018-07-12

Teetering rotor hub system

#54
20180156285
2018-06-07

Magnetorheological fluid clutch apparatus with cylindrical fluid gap

#55
20180155019
2018-06-07

Tilt-prop aircraft

#56
20180105264
2018-04-19

Rotor blade control horn arrangements

#57
20180093763
2018-04-05

Rotorcraft autopilot and methods

#58
20180072412
2018-03-15

Adjustment of track and balance of a multi-blade rotor

#59
20180044007
2018-02-15

Emergency collective actuator and method for a helicopter

#60
20170253328
2017-09-07

Helicopter anti-torque rotor

#61
20170253327
2017-09-07

Adjustable blade-to-hub lead-lag damper attachment

#62
20170240289
2017-08-24

Invertible aircraft

#63
20170050728
2017-02-23

Emergency collective actuator and method for a helicopter

#64
20170021912
2017-01-26

De-rotation system for a shaft fairing

#65
20170008624
2017-01-12

Advanced emergency collective actuator with friction pull-off and method for a helicopter

#66
20160368601
2016-12-22

Ducted oblique-rotor VTOL vehicle

#67
20160257399
2016-09-08

MAST DAMPENER AND COLLECTIVE PITCH FOR A ROTORCRAFT

#68
20160251078
2016-09-01

Emergency collective actuator and method for a helicopter

#69
20160167777
2016-06-16

Rotor assembly apparatus

#70
20160152335
2016-06-02

Invertible aircraft

#71
20160152330
2016-06-02

Rotorcraft autopilot and methods

#72
20160130010
2016-05-12

Invertible aircraft

#73
20160122013
2016-05-05

Scissoring fold arrangement for dual plane four bladed rotor hubs

#74
20160090177
2016-03-31

Methods and apparatus to control pitch and twist of blades

#75
20160023758
2016-01-28

Rotorcraft autopilot system, components and methods

#76
20150360773
2015-12-17

Helicopter rotor with a mechanical means for configuring rotor tips to control brown outs

#77
20150336664
2015-11-26

Adjustable blade-to-hub lead-lag damper attachment

#78
20150298803
2015-10-22

Adjustable scissor control link

#79
20150166175
2015-06-18

Rotorcraft fitted with an anti-torque tail rotor that contributes selectively to providing the rotorcraft with lift and with propulsion in translation

#80
20150139799
2015-05-21

Counter-rotating rotor system with static mast

#81
20140299708
2014-10-09

Rocket or ballistic launch rotary wing vehicle

#82
20140178199
2014-06-26

System and method for linkage length adjustment

#83
20140138477
2014-05-22

Invertible aircraft

#84
20140110532
2014-04-24

Direct-drive control of aircraft stability augmentation

#85
20140110525
2014-04-24

System and method for providing for collective control in an aircraft

#86
20140027566
2014-01-30

Rotorcraft autopilot system, components and methods

#87
20140027564
2014-01-30

Rotorcraft autopilot and methods

#88
20130168492
2013-07-04

Adjustable pitch link

#89
20120286088
2012-11-15

Emergency collective actuator and method for a helicopter

#90
20120189450
2012-07-26

Rotor assembly for a rotorcraft

#91
20120153073
2012-06-21

Mission-adaptive rotor blade

#92
20120134741
2012-05-31

Rotary wing aircraft rod end and method of making a helicopter vehicle rod end with a precocked orientation

#93
20110276202
2011-11-10

Simplified flight control system including a declutchable friction device

#94
20110036940
2011-02-17

Mechanical flight control auxiliary power assist system

#95
20090317252
2009-12-24

Power-assisted control system for a rotorcraft

#96
20090283628
2009-11-19

DIRECTIONAL CONTROL ARRANGEMENT TO PROVIDE STABILIZING FEEDBACK TO A STRUCTURAL BENDING MODE

#97
20080247690
2008-10-09

Rotary wing aircraft rod end and method of making a helicopter vehicle rod end with a precocked orientation

#98
20080121752
2008-05-29

Asymmetrically changing rotating blade shape (ACRBS) propeller and its airplane and wind turbine applications

#99
20070231140
2007-10-04

Rotary wing aircraft rod end and method of making a helicopter vehicle rod end with a precocked orientation

#100
20070084962
2007-04-19

Unloaded lift offset rotor system for a helicopter

#101
18926193
2026-03-17

Helicopter pitch controls

#102
18820529
2025-11-18

Deformable flying machine

#103
18811379
2025-07-08

Blade pitch detection for an aerial vehicle

#104
18537397
2025-10-14

Rotor system for electrically powered rotorcraft

#105
18220720
2024-07-30

Rotor system for electrically powered rotorcraft

#106
16040953
2022-04-05

Flight module for an aerial vehicle

#107
14604854
2015-09-08

Autogiro pitch changing rotor head