ClassID:

71979

B64C11/50 - CPC Classification

Classification description:

Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft; Arrangements of or constructional features peculiar to multiple propellers Phase synchronisation between multiple propellers

Recent Application in this class:
#1
20250269973
2025-08-28

SYSTEMS AND METHODS FOR PROPULSOR PARKING

#2
20250207536
2025-06-26

SYSTEM AND METHOD FOR SYNCHROPHASING A PROPULSION SYSTEM USING ELECTRIC MACHINES

#3
20240425190
2024-12-26

METHOD TO DECREASE ACOUSTIC SIGNATURE OF A HYBRID ELECTRIC PROPULSION SYSTEM

#4
20240418144
2024-12-19

SYSTEMS AND METHODS FOR INTERLEAVED SYNCHRONOUS PROPELLER SYSTEM

#5
20240418132
2024-12-19

System and method for synchrophasing a propulsion system using electric machines

#6
20240418131
2024-12-19

SYSTEM AND METHOD FOR EFFICIENTLY DETERMINING A PHASE SHIFT IN A PROPULSION SYSTEM

#7
20240286736
2024-08-29

ROTOR ASSEMBLY

#8
20230382546
2023-11-30

SYSTEMS AND METHODS FOR PROPULSOR SYNCHRONIZATION

#9
20230323853
2023-10-12

Systems and methods for interleaved synchronous propeller system

#10
20220204157
2022-06-30

Hybrid gyrodyne aircraft

#11
20220097834
2022-03-31

Hybrid gyrodyne aircraft

#12
20220055742
2022-02-24

Hybrid gyrodyne aircraft

#13
20220055741
2022-02-24

Hybrid gyrodyne aircraft

#14
20220043465
2022-02-10

Hybrid gyrodyne aircraft

#15
20210078715
2021-03-18

System and method for aircraft noise mitigation

#16
20200269990
2020-08-27

System and method for aircraft noise mitigation

#17
20200223537
2020-07-16

TANDEM TILTROTOR AIRCRAFT

#18
20200223533
2020-07-16

Dynamic rotor-phasing unit

#19
20200189722
2020-06-18

Apparatus for controlling multi-rotor vehicle vibrations and related methods

#20
20200156778
2020-05-21

Aerial vehicle using motor pulse-induced cyclic control

#21
20200108913
2020-04-09

Low-noise multi-propeller system

#22
20200023951
2020-01-23

Variable hub-to-hub phasing rotor system

#23
20190337608
2019-11-07

COAXIALLY ALIGNED PROPELLERS OF AN AERIAL VEHICLE

#24
20190161169
2019-05-30

Adaptive phase control architecture for reduction of community noise from distributed propulsion vehicles

#25
20180327083
2018-11-15

Single lever powerplant control on twin turbopropeller aircraft

#26
20180237123
2018-08-23

Single lever control in twin turbopropeller aircraft

#27
20180134405
2018-05-17

Method and device for monitoring a deviation of a first rotational speed of a first drive unit for an aircraft from a second rotational speed of an at least second drive unit for an aircraft

#28
20170297699
2017-10-19

QUAD ROTOR TAIL-SITTER AIRCRAFT WITH ROTOR BLOWN WING (RBW) CONFIGURATION

#29
20170297679
2017-10-19

Interconnect drive system

#30
20170274993
2017-09-28

Aerial vehicle with different propeller blade configurations

#31
20170274984
2017-09-28

COAXIALLY ALIGNED PROPELLERS OF AN AERIAL VEHICLE

#32
20170274983
2017-09-28

Aerial vehicle propulsion mechanism with coaxially aligned and independently rotatable propellers

#33
20170057631
2017-03-02

Vertical takeoff and landing vehicle with increased cruise efficiency

#34
20160244158
2016-08-25

Vertical take-off and landing vehicle with increased cruise efficiency

#35
20150344127
2015-12-03

AEROELASTICALLY TAILORED PROPELLERS FOR NOISE REDUCTION AND IMPROVED EFFICIENCY IN A TURBOMACHINE

#36
20150217863
2015-08-06

Variable hub-to-hub phasing rotor system

#37
20110189017
2011-08-04

Aircraft including an engine controlled by synchrophasing

#38
20100047068
2010-02-25

Aeroengine

#39
20070084963
2007-04-19

Method and device for synchrophasing the propellers of an aircraft with several propulsion units

#40
16991664
2020-10-27

Dynamic rotor-phasing unit