Patents-Review.com
ClassID:

71959 ⎘

B64C11/28 - CPC Classification

Classification description:

Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft; Blades; Constructional features Collapsible or foldable blades

Recent Application in this class:
#1
20260138741
2026-05-21

Proprotor Lockout Systems for Tiltrotor Aircraft

 #2
20260062116
2026-03-05

FOLDABLE PROPELLER BLADE WITH LOCKING MECHANISM

 #3
20260062113
2026-03-05

AERIAL VEHICLE WITH DEPLOYABLE COMPONENTS

 #4
20250333160
2025-10-30

PROPELLER

 #5
20250326483
2025-10-23

Distributed Propulsion System for Vertical Take Off and Landing Closed Wing Aircraft

 #6
20250250005
2025-08-07

Proprotor Lockout Systems for Tiltrotor Aircraft

 #7
20250223030
2025-07-10

Self-Folding Propeller

 #8
20250206447
2025-06-26

HYBRID AIRCRAFT USING WAVE ENGINE AND ELECTRIC PROPULSION

 #9
20250206438
2025-06-26

FOLDABLE PROPELLER BLADE WITH LOCKING MECHANISM

 #10
20250178724
2025-06-05

Distributed Propulsion System for Vertical Take Off and Landing Closed Wing Aircraft

 #11
20250100674
2025-03-27

FOLD-LOCK AND PITCH-LOCK SYSTEMS

 #12
20250033767
2025-01-30

Rotor deployment mechanism for vertical take-off and landing aircraft

 #13
20250019082
2025-01-16

VTOL AIRCRAFT WITH DUAL PROPELLERS AND DIRECTIONAL CLUTCH

 #14
20240294252
2024-09-05

Distributed propulsion system for vertical take off and landing closed wing aircraft

 #15
20240286741
2024-08-29

UNIVERSAL-JOINT ROTOR-HUB METHOD AND SYSTEM

 #16
20240278910
2024-08-22

DISTRIBUTED PROPULSION SYSTEM

 #17
20240208638
2024-06-27

Propulsion system

 #18
20240208637
2024-06-27

AERIAL VEHICLE WITH DEPLOYABLE COMPONENTS

 #19
20240199197
2024-06-20

Propulsion system with synergistic pusher type propeller

 #20
20240059408
2024-02-22

Rotary wing air vehicle

 #21
20240043133
2024-02-08

Hybrid-electric powertrains for aircraft

 #22
20240043117
2024-02-08

Vertical take off and landing closed wing aircraft

 #23
20240017815
2024-01-18

AERIAL VEHICLE WITH DEPLOYABLE COMPONENTS

 #24
20230406492
2023-12-21

Proprotor lockout systems for tiltrotor aircraft

 #25
20230382541
2023-11-30

Vertical take-off and landing aircraft with deployable rotors

 #26
20230382526
2023-11-30

Distributed propulsion system for vertical take off and landing closed wing aircraft

 #27
20230348088
2023-11-02

Propulsion unit with foldable propeller blades and method for stopping the propeller in an indexed angular position

 #28
20230303242
2023-09-28

Self-folding propeller

 #29
20230257106
2023-08-17

Nose Cone

 #30
20230249812
2023-08-10

Propulsion unit with foldable propeller blades and method for folding the blades

 #31
20230234696
2023-07-27

PROPULSION UNIT WITH FOLDABLE PROPELLER BLADES AND METHOD FOR FOLDING THE BLADES

 #32
20230192293
2023-06-22

Distributed propulsion system

 #33
20230192288
2023-06-22

Aircraft having rotor assemblies rotating in parallel planes

 #34
20230182887
2023-06-15

Passive proprotor-blade retention systems

 #35
20230159175
2023-05-25

Aircraft propulsor and method for using said propulsor

 #36
20230144699
2023-05-11

VEHICLE HAVING MULTIPLE CONFIGURATIONS INCLUDING ROAD CONFIGURATION AND FLYING CONFIGURATION BASED UPON ROTOR POSITION

 #37
20230142917
2023-05-11

Aerial vehicle with deployable components

 #38
20230137714
2023-05-04

Articulated electric propulsion system and lightweight vertical take-off and landing aircraft using same

 #39
20230129055
2023-04-27

Self-retaining wear-pad leveler

 #40
20230101186
2023-03-30

Pitch-fold lock

 #41
20230091659
2023-03-23

High-Altitude Airborne Remote Sensing

 #42
20230067093
2023-03-02

Chord lock assembly for a tiltrotor aircraft

 #43
20230036322
2023-02-02

FOLDABLE PROPELLER ASSEMBLY

 #44
20220402595
2022-12-22

Propeller apparatus of air mobility

 #45
20220402593
2022-12-22

Propeller control system of air mobility

 #46
20220363367
2022-11-17

AIRCRAFT PROPULSION SYSTEM

 #47
20220340259
2022-10-27

Propeller apparatus of air mobility

 #48
20220274685
2022-09-01

Nose cone

 #49
20220258870
2022-08-18

Aerodynamically efficient lightweight vertical take-off and landing aircraft

 #50
20220212785
2022-07-07

Aircraft having a high efficiency forward flight mode

 #51
20220204174
2022-06-30

Aerodynamically efficient lightweight vertical take-off and landing aircraft with pivoting rotors and box wing design

 #52
20220194554
2022-06-23

Folding propeller for air mobility

 #53
20220185450
2022-06-16

Propeller apparatus of air mobility

 #54
20220144440
2022-05-12

Aerodynamically efficient lightweight vertical take-off and landing aircraft with deployable rotors

 #55
20220144410
2022-05-12

Retractable propeller apparatus of air mobility vehicle

 #56
20220126981
2022-04-28

Propeller folding apparatus of air mobility vehicle

 #57
20220048616
2022-02-17

Foldable blade assembly

 #58
20220024574
2022-01-27

High speed rotorcraft propulsion configuration

 #59
20220017230
2022-01-20

Clutch with synchronizer and locking mechanism

 #60
20210403143
2021-12-30

Foldable propeller blade with locking mechanism

 #61
20210394888
2021-12-23

Sacrificial blade tips for ducted aircraft

 #62
20210371103
2021-12-02

Vertical take off and landing closed wing aircraft

 #63
20210371085
2021-12-02

Single motor single actuator rotorcraft

 #64
20210362837
2021-11-25

Pitch-fold lock

 #65
20210354815
2021-11-18

Pitch crank assembly with spherical bearings

 #66
20210316851
2021-10-14

Scissoring propeller with centripetally actuated centering lever lock

 #67
20210309351
2021-10-07

Aircraft having hybrid propulsion

 #68
20210291996
2021-09-23

ELECTRIC AIRCRAFT WITH POD MOUNTED BATTERIES

 #69
20210291960
2021-09-23

Single Hooke's joint with spherical mast attachment

 #70
20210269148
2021-09-02

Over-center gimbal actuation lock

 #71
20210261245
2021-08-26

Fixed-wing short-takeoff-and-landing aircraft and related methods

 #72
20210253233
2021-08-19

Lift engine auxiliary thrust system for stop fold aircraft

 #73
20210237853
2021-08-05

Foldable rotor assembly for fixed-wing VTOL aircraft

 #74
20210206487
2021-07-08

Aircraft and Modular Propulsion Unit

 #75
20210206485
2021-07-08

Articulated Electric Propulsion System With Fully Stowing Blades And Lightweight Vertical Take-Off And Landing Aircraft Using Same

 #76
20210139132
2021-05-13

PROPELLERS, POWER ASSEMBLIES AND AERIAL VEHICLES

 #77
20210114721
2021-04-22

Elastomeric pitch lock restraint

 #78
20210114715
2021-04-22

Length adjustable link

 #79
20210107624
2021-04-15

Spring-loaded link

 #80
20210078695
2021-03-18

Stowed blade pneumatic clamp

 #81
20210031909
2021-02-04

Lift rotor system

 #82
20200391860
2020-12-17

Active sail blade

 #83
20200346739
2020-11-05

Unmanned helicopter

 #84
20200339260
2020-10-29

Distributed propulsion system for vertical take off and landing closed wing aircraft

 #85
20200317353
2020-10-08

Aerodynamically efficient lightweight vertical take-off and landing aircraft with pivoting rotors and box wing design

 #86
20200317325
2020-10-08

Folding propeller, power component and unmanned aerial vehicle

 #87
20200283140
2020-09-10

Aircraft generating thrust in multiple directions

 #88
20200277046
2020-09-03

Self-folding propeller

 #89
20200223552
2020-07-16

Motive fairing assembly for use in rotorcrafts

 #90
20200223532
2020-07-16

Common spar assembly for use in nonfoldable and foldable proprotor blades

 #91
20200164993
2020-05-28

Aerodynamically efficient lightweight vertical take-off and landing aircraft with pivoting rotors and stowing rotor blades

 #92
20200156782
2020-05-21

Distributed propulsion system

 #93
20200156748
2020-05-21

Propeller

 #94
20200108921
2020-04-09

Closed wing aircraft having a distributed propulsion system

 #95
20200102065
2020-04-02

Aerial vehicle with deployable components

 #96
20200079502
2020-03-12

Articulated electric propulsion system with fully stowing blades and lightweight vertical take-off and landing aircraft using same

 #97
20200079496
2020-03-12

Pipe props rotary wing

 #98
20200079495
2020-03-12

Unmanned helicopter

 #99
20200062382
2020-02-27

High speed rotorcraft propulsion configuration

 #100
20200055593
2020-02-20

Rotorcraft flapping lock

 #101
20200055358
2020-02-20

Fly/drive vehicle that is convertible between a road riding condition and a flying condition

 #102
20200039633
2020-02-06

Rotor blade locking assembly

 #103
20200031462
2020-01-30

COAXIAL SINGLE-BLADED ROTOR STOPPED-ROTOR VERTICAL TAKE-OFF AND LANDING AIRCRAFT AND ASSOCIATED METHOD OF FLYING

 #104
20200023962
2020-01-23

VERTICAL TAKE-OFF AND LANDING AIRCRAFT

 #105
20200003295
2020-01-02

Lubrication management systems for tiltrotor aircraft

 #106
20190382106
2019-12-19

Folding concentrically mounted propeller blades for drag reduction

 #107
20190382100
2019-12-19

Semi-automatic rotor blade fold mechanism

 #108
20190375500
2019-12-12

Articulated electric propulsion system with fully stowing blades and lightweight vertical take-off and landing aircraft using same

 #109
20190359317
2019-11-28

Quick release folding propeller blades for a model aircraft

 #110
20190359315
2019-11-28

Aircraft turbine engine with a pair of rotating and non-ducted propellers

 #111
20190352002
2019-11-21

Control systems and methods for rotating systems

 #112
20190329877
2019-10-31

Passively folding propeller blades for drag reduction

 #113
20190329867
2019-10-31

Blade fold method and apparatus for a tilt rotor hub

 #114
20190329866
2019-10-31

Clip-on propeller mount

 #115
20190301537
2019-10-03

Axially actuated locking system for a retractable driveshaft and method for use thereof

 #116
20190277353
2019-09-12

Torque path coupling assemblies for tiltrotor aircraft

 #117
20190276142
2019-09-12

Torque path coupling assemblies for tiltrotor aircraft

 #118
20190256193
2019-08-22

FOLDING PROPELLER

 #119
20190248483
2019-08-15

Mast lockout systems for tiltrotor aircraft

 #120
20190233095
2019-08-01

Hybrid yoke

 #121
20190217950
2019-07-18

Aircraft with thrust vectoring propulsion assemblies

 #122
20190185142
2019-06-20

Folding spindle and bearing assembly in a folding rotor blade assembly

 #123
20190185141
2019-06-20

Dual blade fold bolts and inboard centrifugal bearing in a folding rotor blade assembly

 #124
20190185140
2019-06-20

Combined fan and motor

 #125
20190176980
2019-06-13

Dual rotor propulsion systems for tiltrotor aircraft

 #126
20190144109
2019-05-16

Extended range quad tiltrotor aircraft

 #127
20190135427
2019-05-09

TRI-ROTOR TAILSITTER AIRCRAFT

 #128
20190127061
2019-05-02

Tiltwing multicopter with foldable and non-foldable propellers

 #129
20190092462
2019-03-28

Storage modes for tiltrotor aircraft

 #130
20190092461
2019-03-28

Foldable rotor assembly for fixed-wing VTOL aircraft

 #131
20190071174
2019-03-07

VERTICAL TAKE OFF AND LANDING AIRCRAFT WITH FOUR TILTING WINGS AND ELECTRIC MOTORS

 #132
20190071171
2019-03-07

Propeller units

 #133
20190061914
2019-02-28

Aircraft propeller comprising collapsible variable pitch blades

 #134
20190055003
2019-02-21

FOLDABLE PROPELLER, POWER ASSEMBLY AND UNMANNED AERIAL VEHICLE

 #135
20190047691
2019-02-14

Rolling gimbal lock systems for rotorcraft

 #136
20190023410
2019-01-24

Clutch with synchronizer and locking mechanism

 #137
20190016441
2019-01-17

Blade fold mechanism

 #138
20180362169
2018-12-20

AIRCRAFT WITH ELECTRIC AND FUEL ENGINES

 #139
20180362155
2018-12-20

Convertible propeller

 #140
20180362154
2018-12-20

Retractable and deployable flight rotor system

 #141
20180297698
2018-10-18

Aircraft Having Telescopic Wings and Tilting Motor Assemblies

 #142
20180281943
2018-10-04

Transportation services for pod assemblies

 #143
20180257447
2018-09-13

Dual-mode vehicle with wheel rotors

 #144
20180251215
2018-09-06

Bimodal propeller aircraft

 #145
20180244381
2018-08-30

Vertical take off and landing closed wing aircraft

 #146
20180244376
2018-08-30

Distributed propulsion system for vertical take off and landing closed wing aircraft

 #147
20180244364
2018-08-30

Modular fuselage sections for vertical take off and landing distributed airframe aircraft

 #148
20180229830
2018-08-16

Foldable rotor blade assembly

 #149
20180222577
2018-08-09

Variable in-flight wing fold system

 #150
20180215462
2018-08-02

Distributed propulsion system

 #151
20180186445
2018-07-05

Forward folding rotor blades

 #152
20180178896
2018-06-28

Unfolding propeller unit type unmanned aerial vehicle

 #153
20180141672
2018-05-24

Aerodynamically efficient lightweight vertical take-off and landing aircraft with pivoting rotors and stowing rotor blades

 #154
20180127092
2018-05-10

Flying and walking drone

 #155
20180127091
2018-05-10

Flying and walking drone

 #156
20180118334
2018-05-03

Rotor sequencing for dual rotor aircraft

 #157
20180093777
2018-04-05

Translating nacelle wall for an aircraft tail mounted fan section

 #158
20180093754
2018-04-05

Translating fan blades for an aircraft tail mounted fan assembly

 #159
20180093753
2018-04-05

Collapsible and rapidly-deployable unmanned aerial vehicle

 #160
20180079502
2018-03-22

Storage models for tiltrotor aircraft

 #161
20180079501
2018-03-22

Storage modes for tiltrotor aircraft

 #162
20180079500
2018-03-22

Storage modes for tiltrotor aircraft

 #163
20180079499
2018-03-22

Storage modes for tiltrotor aircraft

 #164
20180079490
2018-03-22

Chordwise folding and locking of rotor systems

 #165
20180079488
2018-03-22

FOLDABLE AIRCRAFT WITH ANHEDRAL STABILIZING WINGS

 #166
20180079487
2018-03-22

Tiltrotor articulated wing extension

 #167
20180079486
2018-03-22

Wing pivot structures for tiltrotor aircraft

 #168
20180079485
2018-03-22

Wing pivot structure for tiltrotor aircraft

 #169
20180065741
2018-03-08

Tiltrotor propulsion system for an aircraft

 #170
20180065729
2018-03-08

Quiet slat propeller

 #171
20180057145
2018-03-01

Nose cone

 #172
20180044014
2018-02-15

SELF-MOVING APPARATUS AND COMPONENTS THEREOF

 #173
20180044011
2018-02-15

Rotor-blown wing with passively tilting fuselage

 #174
20180037311
2018-02-08

Locking mechanism for unmanned aerial vehicle

 #175
20180002012
2018-01-04

Aircraft with independently controllable propulsion assemblies

 #176
20180002011
2018-01-04

Aircraft with selectively attachable passenger pod assembly

 #177
20180002009
2018-01-04

Aircraft propulsion assembly

 #178
20170327205
2017-11-16

Folding proprotor blade assembly having integral tang assembly

 #179
20170320564
2017-11-09

Air wheel rotor, a gyro stabilized aircraft and a wind-driven power generator using the air wheel rotor, and a stationary launching device

 #180
20170297698
2017-10-19

Tiltwing aircraft

 #181
20170297678
2017-10-19

Blade fold system using flap hinge

 #182
20170291686
2017-10-12

Aerial vehicle with deployable components

 #183
20170283042
2017-10-05

Weight-shifting coaxial helicopter

 #184
20170274993
2017-09-28

Aerial vehicle with different propeller blade configurations

 #185
20170274983
2017-09-28

Aerial vehicle propulsion mechanism with coaxially aligned and independently rotatable propellers

 #186
20170274982
2017-09-28

Telescoping propeller blades for aerial vehicles

 #187
20170274979
2017-09-28

Aerial vehicle propulsion mechanism with coaxially aligned propellers

 #188
20170274978
2017-09-28

Aerial vehicle adaptable propeller blades

 #189
20170203831
2017-07-20

Propeller device for aircraft, spacecraft or watercraft

 #190
20170197702
2017-07-13

Foldable propeller blade with locking mechanism

 #191
20170144746
2017-05-25

Tilrotor aircraft having rotary and non rotary flight modes

 #192
20170057631
2017-03-02

Vertical takeoff and landing vehicle with increased cruise efficiency

 #193
20160368590
2016-12-22

Methods for providing a durable solar powered aircraft with a variable geometry wing

 #194
20160347441
2016-12-01

Deployable propeller

 #195
20160318600
2016-11-03

Mechanically self-regulated propeller

 #196
20160311553
2016-10-27

Tail sitter vehicle with aerial and ground refueling system

 #197
20160304194
2016-10-20

Articulated electric propulsion system with fully stowing blades and lightweight vertical take-off and landing aircraft using same

 #198
20160244147
2016-08-25

QUIET SLAT PROPELLER

 #199
20160229531
2016-08-11

Convertible tiltrotor aircraft

 #200
20160152329
2016-06-02

Folding proprotor gimbal lock and blade lock mechanism

 #201
20160083087
2016-03-24

Rotorcraft flapping lock

 #202
20160031555
2016-02-04

Aerodynamically efficient lightweight vertical take-off and landing aircraft with pivoting rotors and stowing rotor blades

 #203
20150298804
2015-10-22

Rotorcraft flapping lock

 #204
20150266571
2015-09-24

Aerodynamically efficient lightweight vertical take-off and landing aircraft with pivoting rotors and stowing rotor blades

 #205
20150132104
2015-05-14

Variable geometry lift fan mechanism

 #206
20150086365
2015-03-26

Retractable composite rotor blade assembly

 #207
20130251529
2013-09-26

Retractable composite rotor blade assembly

 #208
20120000177
2012-01-05

Turbine engine with nonstreamlined impellers

 #209
20100104437
2010-04-29

Retractable composite rotor blade assembly

 #210
20100072325
2010-03-25

Forward (Upstream) Folding Rotor for a Vertical or Short Take-Off and Landing (V/STOL) Aircraft

 #211
20050151006
2005-07-14

High altitude reconnaissance vehicle

 #212
20050093507
2005-05-05

Methods and systems for starting propeller-driven devices

 #213
18648157
2025-07-01

Electric propulsor with folding propeller

 #214
17696995
2023-08-01

Flapping hinge for a fan blade

 #215
17554949
2023-02-28

Active proprotor-blade retention systems

 #216
16941420
2021-10-12

Short take off and land aircraft

 #217
16526860
2020-03-10

Aircraft generating thrust in multiple directions

 #218
15801052
2018-05-22

Tiltwing multicopter with foldable and non-foldable propellers

 #219
15600292
2019-08-27

Shaft-mounted operators for folding and opening propeller blades

 #220
15600252
2020-06-02

Independently rotatable propeller blade mounts

 #221
15447028
2018-05-01

Bimodal propeller aircraft

 #222
15259193
2020-01-07

Collapsible large diameter propeller for quiet aircraft

 #223
15197763
2017-02-21

Collapsible lift propellers

 #224
14749299
2016-08-09

Collapsible lift propellers