ClassID:

72090

B64C27/008 - CPC Classification

Classification description:

Rotorcraft; Rotors peculiar thereto Rotors tracking or balancing devices

Recent Application in this class:
#1
20250242908
2025-07-31

ROTORCRAFT SYSTEM FOR COMMAND MODE TRANSITIONS

#2
20250197002
2025-06-19

SYSTEM AND METHOD OF ROTOR MANAGEMENT

#3
20250178721
2025-06-05

TIP END JOINT ARRANGEMENT FOR A ROTOR BLADE WITH RECONFIGURABLE ATTRIBUTES FOR STRUCTURAL AND AERODYNAMIC TUNING

#4
20240317394
2024-09-26

WEIGHT BALANCED ROTOR BLADE WITH THERMOPLASTIC COMPOSITE WEIGHT

#5
20240300641
2024-09-12

Rotor blade weight system

#6
20240239482
2024-07-18

FLIGHT VEHICLE FOR WHICH ROTATIONAL POSITION OF ROTARY BLADE IS CONTROLLED, MOTOR CONTROL APPARATUS, METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM THAT STORES PROGRAM

#7
20240002045
2024-01-04

Weight balanced rotor blade with thermoplastic composite weight

#8
20230331377
2023-10-19

Rotor Blade Tracking Wedge with Porous Elements

#9
20230249815
2023-08-10

System and method of rotor management

#10
20230227152
2023-07-20

Core material for balanced rotor blade

#11
20230204389
2023-06-29

ANISOTROPIC MAGNETO-RESISTIVE SENSOR FLAP MEASURING ON GIMBALLED HUB

#12
20230192276
2023-06-22

Anisotropic magneto-resistive sensor flap measuring systems

#13
20230043055
2023-02-09

Load balancing system

#14
20220402600
2022-12-22

Real time rotor head moment measurement, control, and limiting

#15
20220081106
2022-03-17

Single spoke spinner support

#16
20220009623
2022-01-13

Sound-reducing rotor blade tracking wedge profile

#17
20210362846
2021-11-25

Method and device for determining a state of a rotorcraft rotor

#18
20210331788
2021-10-28

Systems and methods to perform track and balance for rotorcrafts

#19
20210323660
2021-10-21

Rotor blade internal structure for trailing edge actuation

#20
20210291975
2021-09-23

Method of providing torque protection and/or thrust protection for propellers of a hybrid helicopter, and a hybrid helicopter

#21
20210179263
2021-06-17

System and method for dynamically measuring blade position during flight of a rotorcraft

#22
20210094677
2021-04-01

Balance weight assemblies for rotor blades

#23
20210078699
2021-03-18

INSERT FOR A BLADE OF A ROTARY-WING AIRCRAFT AND A BLADE OF ROTARY-WING AIRCRAFT

#24
20200292410
2020-09-17

METHOD AND SYSTEM FOR DETERMINING ROTOR STATES

#25
20200247021
2020-08-06

Systems for manufacturing a particulate-binder composite article

#26
20200140074
2020-05-07

System and method for frequency domain rotor mode decomposition

#27
20200001988
2020-01-02

Method and apparatus for proximity control between rotating and non-rotating aircraft components

#28
20200001979
2020-01-02

Method and apparatus for proximity control between rotating and non-rotating aircraft components

#29
20190344882
2019-11-14

Blade moment adjustment system

#30
20190337611
2019-11-07

Method and system for controlling an emergency device

#31
20190315495
2019-10-17

Devices and methods to verify tail rotor cross-head positioning

#32
20190308721
2019-10-10

INTEGRATED SMART SENSING SYSTEMS AND METHODS

#33
20190241258
2019-08-08

ROTOR BLADE DEFLECTION SENSING SYSTEM

#34
20190161178
2019-05-30

UNMANNED AERIAL VEHICLE AND PROPELLER THEREOF

#35
20190135420
2019-05-09

Tilt Winged Multi Rotor

#36
20190112038
2019-04-18

Rotor for a hover-capable aircraft and method for detecting the attitude of a blade with respect to a hub of such a rotor

#37
20190092458
2019-03-28

Inertia weight assemblies for rotorcraft

#38
20190039726
2019-02-07

Rotor span-balance pocket

#39
20190031327
2019-01-31

Rotor span-balance pocket

#40
20180362153
2018-12-20

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

#41
20180273163
2018-09-27

Adaptable rotor blade design for performance flexibility

#42
20180222579
2018-08-09

Lift rotor and vertical or short take-off and/or landing hybrid aerodyne comprising same

#43
20180155015
2018-06-07

Automatic, active blade tracking and balance system

#44
20180148165
2018-05-31

ROTOR STATE FEEDBACK SYSTEM

#45
20180147757
2018-05-31

Particulate-binder composite article and associated system and method for manufacturing the same

#46
20180141646
2018-05-24

Propulsor hub weight element and balancing method

#47
20180135728
2018-05-17

Rotor blade weight system

#48
20180072412
2018-03-15

Adjustment of track and balance of a multi-blade rotor

#49
20180072405
2018-03-15

Tracker and vibration analysis system having UV sensitivity

#50
20180050795
2018-02-22

Tip clearance harmonic estimation

#51
20180044002
2018-02-15

Core matertal for balanced rotor blade

#52
20170361926
2017-12-21

Method of balancing a main rotor hub

#53
20170334554
2017-11-23

Aircraft rotor blade with reduced stress

#54
20170327209
2017-11-16

Multi-objective control system with control allocation

#55
20170305540
2017-10-26

Noise modes for rotary wing aircraft

#56
20170297690
2017-10-19

Hub separation in dual rotor rotary wing aircraft

#57
20170291702
2017-10-12

Collective to elevator mixing of a rotary wing aircraft

#58
20170284373
2017-10-05

Wind turbine rotor balancing method, associated system and wind turbine

#59
20170283047
2017-10-05

Main rotor rotational speed control for rotorcraft

#60
20170275014
2017-09-28

Rotorcraft rotor and propeller speed

#61
20170274994
2017-09-28

Gearbox for a dual rotor, rotary wing aircraft

#62
20170274987
2017-09-28

Single collective stick for a rotary wing aircraft

#63
20170233068
2017-08-17

Lift offset control of a rotary wing aircraft

#64
20170233067
2017-08-17

Independent control for upper and lower rotor of a rotary wing aircraft

#65
20170220047
2017-08-03

Vector limiting of a rotor control volume

#66
20170217582
2017-08-03

Dual rotor, rotary wing aircraft

#67
20170210463
2017-07-27

Tip clearance measurement of a rotary wing aircraft

#68
20170203838
2017-07-20

Rotorcraft and associated rotor blade position monitoring system and method

#69
20170193707
2017-07-06

Virtual reality system with drone integration

#70
20170050745
2017-02-23

Rotor wireless load and motion monitoring sensor network

#71
20170008621
2017-01-12

ACCURATE OBJECT DETECTION IN FREE SPACE USING CONTROLLED LIGHT SOURCE TECHNIQUES

#72
20160297518
2016-10-13

Method for static balancing of aircraft rotor blades

#73
20160282140
2016-09-29

Flap angle measurement system and method

#74
20160224030
2016-08-04

Lift offset management and control systems for coaxial rotorcraft

#75
20160200452
2016-07-14

Wireless rotating instrumentation system and methods for data collection on helicopter rotor systems

#76
20160200450
2016-07-14

Direct position measurement for aircraft flight control surfaces

#77
20160153775
2016-06-02

Device for measuring the angular positions of a rotorcraft blade element relative to a rotor hub, an associated rotor, and a corresponding measurement method

#78
20160114896
2016-04-28

Alternative Fuel Source Vehicle

#79
20160052627
2016-02-25

Noise reducing profile for helicopter rotor blade tracking wedges

#80
20160018521
2016-01-21

Active blade tracker and related systems and methods

#81
20160001877
2016-01-07

Passive rotor control mechanism for micro air vehicles

#82
20150355325
2015-12-10

System and method for determining helicopter rotor blade performance

#83
20150298818
2015-10-22

Rotor index sensor system

#84
20150210382
2015-07-30

Relative acceleration blade position measurement

#85
20150203189
2015-07-23

Rotor moment feedback for stability augmentation

#86
20150198436
2015-07-16

Tip clearance measurement

#87
20150132132
2015-05-14

Rotor balancing apparatus

#88
20150132131
2015-05-14

ROTOR BALANCING APPARATUS

#89
20150112637
2015-04-23

Systems and methods for track and balance visualization

#90
20150096370
2015-04-09

Systems and methods for determining rotary blade track and balance adjustments

#91
20150082634
2015-03-26

Method of assembling and balancing rotor blades

#92
20150069175
2015-03-12

Rotor position determination system with magneto-resistive sensors

#93
20150028152
2015-01-29

Helicopter rotor load reduction and tip clearance control

#94
20140324280
2014-10-30

Determining rotorcraft collective adjustment during ground test

#95
20140271188
2014-09-18

Measurement of rotor blade flapping

#96
20140246537
2014-09-04

Single-gauge monitoring of multiple components

#97
20140226153
2014-08-14

Optical tracking of rotor blade motion

#98
20140178199
2014-06-26

System and method for linkage length adjustment

#99
20140145025
2014-05-29

Rotary wing aircraft blade tracking

#100
20140133993
2014-05-15

Apparatus and method for tuning a vibratory response of a rotor blade

#101
20140086750
2014-03-27

Adjustable payload enclosure for wing

#102
20140064966
2014-03-06

Systems and methods of tracking rotor blades

#103
20140061369
2014-03-06

Rotor position determination system with hall-effect sensors

#104
20130332022
2013-12-12

Determining rotorcraft collective adjustment during ground test

#105
20130304400
2013-11-14

System and method of determining rotor loads and motion

#106
20130243597
2013-09-19

Device for monitoring the flapping and/or lag behavior of a blade of a rotorcraft rotor

#107
20130173224
2013-07-04

Methods and systems for helicopter rotor blade balancing

#108
20130092786
2013-04-18

INTERFEROMETRIC STRAIN FIELD SENSOR SYSTEM FOR MEASURING ROTOR STATE

#109
20120301299
2012-11-29

Composite rotor blade having weighted material for mass balancing

#110
20120153073
2012-06-21

Mission-adaptive rotor blade

#111
20120078544
2012-03-29

Wireless rotor track and balance system for rotorcraft

#112
20120068003
2012-03-22

Wireless sensor for an aircraft propulsion system

#113
20110191040
2011-08-04

Techniques for use with rotor track and balance to reduce vibration

#114
20110002785
2011-01-06

Rotor blade adjustable weight retention system

#115
20100222946
2010-09-02

Process and device for automatically optimizing on the ground the aerodynamic configuration of an aircraft

#116
20100063767
2010-03-11

Helicopter blade position detector

#117
20100028151
2010-02-04

Field installable and removable helicopter rotor blade vibration and blade tracking device

#118
20090252608
2009-10-08

System and a method for dynamically balancing a blade

#119
20090169383
2009-07-02

Rotor balance device and method

#120
20090088922
2009-04-02

Method to detect mechanical faults and dynamic instability in rotor systems of helicopters, tilt rotor aircraft, and whirl towers

#121
20080201972
2008-08-28

Rotor blade cuff measuring tool

#122
20080114553
2008-05-15

Method and a system for detecting and locating an adjustment error or a defect of a rotorcraft rotor

#123
20080003107
2008-01-03

Rotational airfoil balance system

#124
20060058927
2006-03-16

Method of adjusting at least one defective rotor of a rotorcraft

#125
20050254947
2005-11-17

Trailing edge adjustable weight system for helicopter main rotor blades

#126
20050238482
2005-10-27

Segmented rotor blade trim tab

#127
20050125103
2005-06-09

Method and device for detecting defects of at least one rotary wing aircraft rotor

#128
20050042109
2005-02-24

Braided spar for a rotor blade and method of manufacture thereof

#129
18737892
2026-03-31

Sound-reducing rotor blade tracking wedge profile