Patents-Review.com
ClassID:

71974 ⎘

B64C11/40 - CPC Classification

Classification description:

Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft; Blade pitch-changing mechanisms fluid, e.g. hydraulic automatic

Recent Application in this class:
#1
20260078681
2026-03-19

HUB ASSEMBLY HAVING A PTICH LOCK SYSTEM

 #2
20250305420
2025-10-02

PITCH CONTROL SYSTEM

 #3
20250290425
2025-09-18

ELECTRONICALLY PILOTED LOW PITCH STOP PROTECTION

 #4
20250229890
2025-07-17

METHOD AND SYSTEM FOR CONTROLLING A VARIABLE-PITCH PROPELLER WITH OIL LEAKAGE COMPENSATION

 #5
20250223026
2025-07-10

MODEL-BASED SPEED GOVERNING FOR VARIABLE-PITCH PROPELLER

 #6
20240391583
2024-11-28

PROPELLER CONTROL SYSTEM FOR AN AIRCRAFT

 #7
20240240566
2024-07-18

PITCH LOCK SYSTEM

 #8
20240217649
2024-07-04

CONTROLLING RATE OF ROTOR FEATHER BY SYSTEM SECONDARY TO PRIMARY BLADE ANGLE CONTROL SYSTEM

 #9
20240125279
2024-04-18

PROPELLER ASSEMBLY AND PITCH CONTROL UNIT

 #10
20240124126
2024-04-18

System and method for controlling the modification of the pitch of the blades of a turbine engine

 #11
20240124125
2024-04-18

BACK-UP PROTECTION FOR UNCONTROLLED FLUID PRESSURE INCREASE IN PROPELLER CONTROL UNITS

 #12
20230106850
2023-04-06

Propeller assembly and pitch control unit

 #13
20220371721
2022-11-24

System for controlling the cyclic setting of blades

 #14
20220243610
2022-08-04

System and method for detecting failure of a propeller control unit

 #15
20220243608
2022-08-04

System and method for detecting failure of a propeller feedback device

 #16
20220033062
2022-02-03

Method and system for determining helicopter rotor airfoil

 #17
20210206474
2021-07-08

Propeller blade pitch angle feedback from actuator rotation

 #18
20210079855
2021-03-18

Propeller assembly and pitch control unit

 #19
20200369370
2020-11-26

Method of controlling a propeller with two-position solenoid

 #20
20200298959
2020-09-24

Combined overspeed, feathering, and reverse enabler control valve for a propeller assembly

 #21
20200283124
2020-09-10

Propeller speed overshoot preventing logic

 #22
20200262542
2020-08-20

System and method for aircraft propeller governing

 #23
20200255123
2020-08-13

Aircraft turboprop engine propeller pitch control system including a controllable feather valve

 #24
20200198765
2020-06-25

Propeller oil control system for aircraft turboprop engines

 #25
20200198764
2020-06-25

Propeller pitch control system for aircraft turboprop engines

 #26
20200189721
2020-06-18

Propeller blade angle closed loop control by solenoid modulation

 #27
20200023956
2020-01-23

Pitch control system

 #28
20190389562
2019-12-26

Transfer bearing collapsing device

 #29
20190367159
2019-12-05

Pitch control assembly

 #30
20190300153
2019-10-03

PROPELLER CYCLIC CONTROL FOR FLYING WING LIFT AUGMENTATION

 #31
20190136867
2019-05-09

Control apparatus for a hydraulic variable-pitch propeller and propeller unit comprising a control apparatus of this kind

 #32
20190092453
2019-03-28

Propeller control unit

 #33
20190061916
2019-02-28

Dual valve systems for actuator control

 #34
20190047714
2019-02-14

Single lever turboprop control systems and methods utilizing torque-based and power-based scheduling

 #35
20190031319
2019-01-31

Propeller control system for an aircraft

 #36
20190003642
2019-01-03

Metering of oil flow to engine propeller

 #37
20180334242
2018-11-22

System and method for aircraft propeller control

 #38
20180327082
2018-11-15

Hydraulic actuation system

 #39
20180128289
2018-05-10

Hydraulic circuit with controlled recirculation circuit

 #40
20180072402
2018-03-15

Propeller blade angle control system

 #41
20170313406
2017-11-02

Hydraulic actuation systems

 #42
20170283036
2017-10-05

Propeller pitch control system

 #43
20170267329
2017-09-21

Hydraulic actuation control in propellers

 #44
20170233066
2017-08-17

Rotary wing aircraft pitch control system

 #45
20170081038
2017-03-23

Single lever turboprop control systems and methods utilizing torque-based and power based scheduling

 #46
20170066525
2017-03-09

System and method for propeller pitch control

 #47
20170066524
2017-03-09

System and method for controlling propeller pitch

 #48
20160244149
2016-08-25

Pitch control assembly

 #49
20160153479
2016-06-02

Hydraulic adjusting device

 #50
20160083076
2016-03-24

Automatic propeller torque protection system

 #51
20140154076
2014-06-05

Device for supplying and distributing fluid

 #52
20130323050
2013-12-05

Electrohydraulic propeller governor

 #53
20110206508
2011-08-25

Method and device for improving performances of an aircraft comprising at least one propeller engine without propeller fairing

 #54
20110164978
2011-07-07

Back-up featherer

 #55
20100135799
2010-06-03

Blade pitch control system

 #56
20100129214
2010-05-27

Machine such as a gas turbine engine

 #57
20100014976
2010-01-21

Propeller blade pitch control system

 #58
20090180876
2009-07-16

Electrohydraulic propeller governor

 #59
20070212221
2007-09-13

Propeller pitch lock system

 #60
20070212220
2007-09-13

Controlled propeller pitch lock actuation system

 #61
20050079053
2005-04-14

Cyclic actuation system for a controllable pitch propeller and a method of providing aircraft control therewith

 #62
18091617
2024-04-16

Controlling rate of rotor feather by primary blade angle control system