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FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04DNON-POSITIVE DISPLACEMENT PUMPS F04D29/00Details, component parts, or accessories

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic assembly for an aircraft engine
- Patent number 12,365,445
- Issue date Jul 22, 2025
- SAFRAN AIRCRAFT ENGINES
- Jean-Baptiste Kamis
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Gas turbine engine with core debris protection
- Patent number 12,326,114
- Issue date Jun 10, 2025
- RTX Corporation
- Michael G. McCaffrey
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Unducted single rotor engine and method for operation
- Patent number 12,320,315
- Issue date Jun 3, 2025
- General Electric Company
- Syed Arif Khalid
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Trunnion retention for a turbine engine
- Patent number 12,134,971
- Issue date Nov 5, 2024
- General Electric Company
- Brandon Wayne Miller
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Variable pitch fan of a gas turbine engine
- Patent number 12,110,903
- Issue date Oct 8, 2024
- GE AVIO S.R.L.
- Paolo Altamura
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Assembly comprising a vane and a vane pitch setting system
- Patent number 12,012,201
- Issue date Jun 18, 2024
- SAFRAN AIRCRAFT ENGINES
- Clément Cottet
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
After-fan system for a gas turbine engine
- Patent number 11,994,089
- Issue date May 28, 2024
- RTX Corporation
- Dmitriy B. Sidelkovskiy
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
System for controlling the pitch setting of a propeller vane for an...
- Patent number 11,981,418
- Issue date May 14, 2024
- SAFRAN AIRCRAFT ENGINES
- Clément Cottet
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Aircraft turbine engine comprising variable-pitch propeller blades
- Patent number 11,851,157
- Issue date Dec 26, 2023
- SAFRAN AIRCRAFT ENGINES
- Vincent Joudon
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Variable pitch fan assembly with remote counterweights
- Patent number 11,851,158
- Issue date Dec 26, 2023
- General Electric Company
- Daniel A. Niergarth
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Blade dovetail and retention apparatus
- Patent number 11,834,965
- Issue date Dec 5, 2023
- General Electric Company
- Nicholas Joseph Kray
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Levered counterweight feathering system
- Patent number 11,795,964
- Issue date Oct 24, 2023
- General Electric Company
- Nicholas M. Daggett
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Turbomachine module equipped with a system for changing the pitch o...
- Patent number 11,753,143
- Issue date Sep 12, 2023
- SAFRAN AIRCRAFT ENGINES
- Clement Cottet
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Blade pivot of adjustable orientation and of reduced bulk for a tur...
- Patent number 11,572,889
- Issue date Feb 7, 2023
- SAFRAN AIRCRAFT ENGINES
- Vincent François Georges Millier
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Variable pitch fan assembly with remote counterweights
- Patent number 11,505,306
- Issue date Nov 22, 2022
- General Electric Company
- Daniel A. Niergarth
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Fan module comprising variable-pitch blades
- Patent number 11,466,697
- Issue date Oct 11, 2022
- SAFRAN AIRCRAFT ENGINES
- Gilles Alain Marie Charier
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Fan module with variable-pitch blades for a turbine engine
- Patent number 11,274,676
- Issue date Mar 15, 2022
- SAFRAN AIRCRAFT ENGINES
- Serge René Morreale
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Fan module having variable-pitch blades for a turbine engine
- Patent number 11,162,506
- Issue date Nov 2, 2021
- SAFRAN AIRCRAFT ENGINES
- Serge Rene Morreale
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Relative position measurement
- Patent number 11,156,119
- Issue date Oct 26, 2021
- General Electric Company
- Ian Francis Prentice
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Variable pitch fan for a gas turbine engine
- Patent number 11,149,741
- Issue date Oct 19, 2021
- Rolls-Royce Corporation
- Daniel K. Vetters
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
System for controlling the pitch of fan blades of a turbine engine,...
- Patent number 11,104,416
- Issue date Aug 31, 2021
- SAFRAN AIRCRAFT ENGINES
- Didier Jean-Louis Yvon
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Adaptable articulating axial-flow compressor/turbine rotor blade
- Patent number 11,073,160
- Issue date Jul 27, 2021
- The United States of America as represented by the Secretary of the Army
- Muthuvel Murugan
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Trunnion retention for a turbine engine
- Patent number 11,053,812
- Issue date Jul 6, 2021
- General Electric Company
- Brandon Wayne Miller
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Grant
Pump systems with variable diameter impeller devices
- Patent number 10,989,216
- Issue date Apr 27, 2021
- Carmine Rende
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rotary machine
- Patent number 10,968,759
- Issue date Apr 6, 2021
- Mitsubishi Heavy Industries, Ltd.
- Kenichiro Iwakiri
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Variable pitch change control method
- Patent number 10,934,866
- Issue date Mar 2, 2021
- Rolls-Royce North American Technologies Inc.
- Patrick Bailey
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Fan module with variable pitch blades
- Patent number 10,899,432
- Issue date Jan 26, 2021
- SAFRAN AIRCRAFT ENGINES
- Gilles Alain Marie Charier
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Hub for propeller having variable-pitch blades, with radial and axi...
- Patent number 10,794,392
- Issue date Oct 6, 2020
- SAFRAN AIRCRAFT ENGINES
- Paul Antoine Foresto
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Apparatus for actuating and controlling the rotation of blades of f...
- Patent number 10,738,681
- Issue date Aug 11, 2020
- BARUFFALDI S.P.A.
- Piercarlo Boffelli
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Aerofoil body
- Patent number 10,662,803
- Issue date May 26, 2020
- Rolls-Royce PLC
- Matthew Mears
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...

Patents Applicationslast 30 patents

Information Patent Application
GAS TURBINE ENGINE WITH CORE DEBRIS PROTECTION
- Publication number 20250059915
- Publication date Feb 20, 2025
- RTX Corporation
- Michael G. McCaffrey
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
ASSEMBLY COMPRISING A VANE AND A VANE PITCH SETTING SYSTEM
- Publication number 20240286733
- Publication date Aug 29, 2024
- SAFRAN AIRCRAFT ENGINES
- Clément COTTET
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
VARIABLE PITCH FAN OF A GAS TURBINE ENGINE
- Publication number 20240151240
- Publication date May 9, 2024
- GE AVIO S.r.L.
- Paolo Altamura
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Application
AIRCRAFT TURBINE ENGINE COMPRISING VARIABLE-PITCH PROPELLER BLADES
- Publication number 20230286643
- Publication date Sep 14, 2023
- SAFRAN AIRCRAFT ENGINES
- Vincent JOUDON
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
SYSTEM FOR CONTROLLING THE PITCH SETTING OF A PROPELLER VANE FOR AN...
- Publication number 20230257105
- Publication date Aug 17, 2023
- SAFRAN AIRCRAFT ENGINES
- Clément COTTET
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
VARIABLE PITCH FAN ASSEMBLY WITH REMOTE COUNTERWEIGHTS
- Publication number 20230085208
- Publication date Mar 16, 2023
- GENERAL ELECTRIC COMPANY
- Daniel A. Niergarth
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
TURBOMACHINE MODULE EQUIPPED WITH A SYSTEM FOR CHANGING THE PITCH O...
- Publication number 20220289362
- Publication date Sep 15, 2022
- SAFRAN AIRCRAFT ENGINES
- Clement COTTET
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
BLADE PIVOT OF ADJUSTABLE ORIENTATION AND OF REDUCED BULK FOR A TUR...
- Publication number 20220018357
- Publication date Jan 20, 2022
- SAFRAN AIRCRAFT ENGINES
- Vincent François Georges MILLIER
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
FAN MODULE COMPRISING VARIABLE-PITCH BLADES
- Publication number 20210396244
- Publication date Dec 23, 2021
- SAFRAN AIRCRAFT ENGINES
- Gilles Alain Marie CHARIER
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Application
TRUNNION RETENTION FOR A TURBINE ENGINE
- Publication number 20210215062
- Publication date Jul 15, 2021
- GENERAL ELECTRIC COMPANY
- Brandon Wayne Miller
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Application
AFTER-FAN SYSTEM FOR A GAS TURBINE ENGINE
- Publication number 20200325852
- Publication date Oct 15, 2020
- United Technologies Corporation
- Dmitriy B. Sidelkovskiy
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
PUMP SYSTEMS WITH VARIABLE DIAMETER IMPELLER DEVICES
- Publication number 20200109717
- Publication date Apr 9, 2020
- Carmine Rende
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
APPARATUS FOR ACTUATING AND CONTROLLING THE ROTATION OF BLADES OF F...
- Publication number 20190162105
- Publication date May 30, 2019
- BARUFFALDI S.p.A.
- Piercarlo BOFFELLI
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
TRUNNION RETENTION FOR A TURBINE ENGINE
- Publication number 20190093503
- Publication date Mar 28, 2019
- GENERAL ELECTRIC COMPANY
- Brandon Wayne Miller
- B64 - AIRCRAFT AVIATION COSMONAUTICS
Information Patent Application
VARIABLE PITCH FAN BLADE SYSTEM
- Publication number 20180306039
- Publication date Oct 25, 2018
- United Technologies Corporation
- LESLIE CHARLES KURZ
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ADAPTABLE ARTICULATING AXIAL-FLOW COMPRESSOR/TURBINE ROTOR BLADE
- Publication number 20180066671
- Publication date Mar 8, 2018
- U.S. ARMY RESEARCH LABORATORY ATTN: RDRL-LOC-I
- Muthuvel Murugan
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
VARIABLE ORIENTATION VANE FOR COMPRESSOR OF AXIAL TURBOMACHINE
- Publication number 20180045070
- Publication date Feb 15, 2018
- Safran Aero Boosters SA
- Stephane Hiernaux
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
ACTIVE FLUTTER CONTROL OF VARIABLE PITCH BLADES
- Publication number 20160319837
- Publication date Nov 3, 2016
- United Technologies Corporation
- Robert J. Morris
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
GAS TURBINE ENGINE
- Publication number 20160084260
- Publication date Mar 24, 2016
- Rolls-Royce plc
- Paul Dennis CLARKE
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
DEVICE AND METHOD FOR CONTROLLING THE PITCH OF BLADES
- Publication number 20150285262
- Publication date Oct 8, 2015
- SNECMA
- Adrien Fabre
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
COUNTERWEIGHT-BASED DEVICE FOR CONTROLLING THE ORIENTATION OF FAN B...
- Publication number 20130047756
- Publication date Feb 28, 2013
- SNECMA
- Francois GALLET
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
DEVICE AND METHOD FOR POSITIONING VARIABLE-GEOMETRY EQUIPMENT FOR A...
- Publication number 20120107088
- Publication date May 3, 2012
- SNECMA
- Bruno Robert Gaully
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
UNDUCTED PROPELLER WITH VARIABLE PITCH BLADES FOR A TURBOMACHINE
- Publication number 20120093652
- Publication date Apr 19, 2012
- SNECMA
- Olivier Belmonte
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
PROPELLER FOR AN AIRCRAFT TURBINE ENGINE COMPRISING A VANE RETAININ...
- Publication number 20120070287
- Publication date Mar 22, 2012
- AIRBUS OPERATIONS (SOCIETE PAR ACTIONS SIMPLIFIEE)
- Laurent Lafont
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ROTOR BLADE PITCH ADJUSTING DEVICE AND TURBOMACHINE CONTAINING THE...
- Publication number 20110293426
- Publication date Dec 1, 2011
- Aktiebolaget SKF
- Thomas Fucks
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
FEATHERING DEVICE FOR THE FAN BLADES OF A TURBOPROP ENGINE
- Publication number 20110236212
- Publication date Sep 29, 2011
- SNECMA
- François GALLET
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
SIMPLIFIED SYSTEM FOR CONTROLLING PROPELLER BLADE PITCH IN AN AIRCR...
- Publication number 20110076143
- Publication date Mar 31, 2011
- SNECMA
- François Gallet
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
DYNAMIC FIN COMPRISING COUPLED FIN SECTIONS
- Publication number 20110061579
- Publication date Mar 17, 2011
- Klaas Boudewijn VAN GELDER
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Application
FAN BLADE RETENTION AND VARIABLE PITCH SYSTEM
- Publication number 20090285686
- Publication date Nov 19, 2009
- ROTATING COMPOSITE TECHNOLOGIES LLC
- John A. Violette
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Propeller with Flexible Variable Blades
- Publication number 20090274557
- Publication date Nov 5, 2009
- Khymych Vasyl
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Hydraulic assembly for an aircraft engine

Gas turbine engine with core debris protection

Unducted single rotor engine and method for operation

Trunnion retention for a turbine engine

Variable pitch fan of a gas turbine engine

Assembly comprising a vane and a vane pitch setting system

After-fan system for a gas turbine engine

System for controlling the pitch setting of a propeller vane for an...

Aircraft turbine engine comprising variable-pitch propeller blades

Variable pitch fan assembly with remote counterweights

Blade dovetail and retention apparatus

Levered counterweight feathering system

Turbomachine module equipped with a system for changing the pitch o...

Blade pivot of adjustable orientation and of reduced bulk for a tur...

Variable pitch fan assembly with remote counterweights

Fan module comprising variable-pitch blades

Fan module with variable-pitch blades for a turbine engine

Fan module having variable-pitch blades for a turbine engine

Relative position measurement

Variable pitch fan for a gas turbine engine

System for controlling the pitch of fan blades of a turbine engine,...

Adaptable articulating axial-flow compressor/turbine rotor blade

Trunnion retention for a turbine engine

Pump systems with variable diameter impeller devices

Rotary machine

Variable pitch change control method

Fan module with variable pitch blades

Hub for propeller having variable-pitch blades, with radial and axi...

Apparatus for actuating and controlling the rotation of blades of f...

Aerofoil body

Patents Applicationslast 30 patents

GAS TURBINE ENGINE WITH CORE DEBRIS PROTECTION

ASSEMBLY COMPRISING A VANE AND A VANE PITCH SETTING SYSTEM

VARIABLE PITCH FAN OF A GAS TURBINE ENGINE

AIRCRAFT TURBINE ENGINE COMPRISING VARIABLE-PITCH PROPELLER BLADES

SYSTEM FOR CONTROLLING THE PITCH SETTING OF A PROPELLER VANE FOR AN...

VARIABLE PITCH FAN ASSEMBLY WITH REMOTE COUNTERWEIGHTS

TURBOMACHINE MODULE EQUIPPED WITH A SYSTEM FOR CHANGING THE PITCH O...

BLADE PIVOT OF ADJUSTABLE ORIENTATION AND OF REDUCED BULK FOR A TUR...

FAN MODULE COMPRISING VARIABLE-PITCH BLADES

TRUNNION RETENTION FOR A TURBINE ENGINE

AFTER-FAN SYSTEM FOR A GAS TURBINE ENGINE

PUMP SYSTEMS WITH VARIABLE DIAMETER IMPELLER DEVICES

APPARATUS FOR ACTUATING AND CONTROLLING THE ROTATION OF BLADES OF F...

TRUNNION RETENTION FOR A TURBINE ENGINE

VARIABLE PITCH FAN BLADE SYSTEM

ADAPTABLE ARTICULATING AXIAL-FLOW COMPRESSOR/TURBINE ROTOR BLADE

VARIABLE ORIENTATION VANE FOR COMPRESSOR OF AXIAL TURBOMACHINE

ACTIVE FLUTTER CONTROL OF VARIABLE PITCH BLADES

GAS TURBINE ENGINE

DEVICE AND METHOD FOR CONTROLLING THE PITCH OF BLADES

COUNTERWEIGHT-BASED DEVICE FOR CONTROLLING THE ORIENTATION OF FAN B...

DEVICE AND METHOD FOR POSITIONING VARIABLE-GEOMETRY EQUIPMENT FOR A...

UNDUCTED PROPELLER WITH VARIABLE PITCH BLADES FOR A TURBOMACHINE

PROPELLER FOR AN AIRCRAFT TURBINE ENGINE COMPRISING A VANE RETAININ...

ROTOR BLADE PITCH ADJUSTING DEVICE AND TURBOMACHINE CONTAINING THE...

FEATHERING DEVICE FOR THE FAN BLADES OF A TURBOPROP ENGINE

SIMPLIFIED SYSTEM FOR CONTROLLING PROPELLER BLADE PITCH IN AN AIRCR...

DYNAMIC FIN COMPRISING COUPLED FIN SECTIONS

FAN BLADE RETENTION AND VARIABLE PITCH SYSTEM

Propeller with Flexible Variable Blades