Inventor
PERKINSON ROBERT H
US37 patents
⚠️ This page may combine multiple inventors who share the name “PERKINSON ROBERT H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PERKINSON ROBERT H
17 patentsUS8167553B2May 1, 2012
Electrical system for driving a propeller pitch change mechanism
PERKINSON ROBERT H21 citations92
US8162611B2Apr 24, 2012
Controllable pitch propeller with electrical power generation
PERKINSON ROBERT H21 citations92
US8757972B2Jun 24, 2014
De-icing system for modular counter rotating propeller
PERKINSON ROBERT H7 citations84
US8740565B2Jun 3, 2014
Modular counter rotating propeller system
PERKINSON ROBERT H9 citations84
US8529205B2Sep 10, 2013
Passive cyclic pitch control
PERKINSON ROBERT H12 citations84
US8277182B2Oct 2, 2012
Remote pitch controller for a variable pitch propeller
PERKINSON ROBERT H11 citations84
US8172530B2May 8, 2012
Pitch change actuation system for a counter-rotating propeller
PERKINSON ROBERT H9 citations84
US8545178B2Oct 1, 2013
Controlled propeller pitch lock actuation system
PERKINSON ROBERT H12 citations83
US8167501B2May 1, 2012
Separator for bearing assemblies with cyclic loads
PERKINSON ROBERT H9 citations77
US8790087B2Jul 29, 2014
Interlocking blade sheath
PERKINSON ROBERT H5 citations73
US8770934B2Jul 8, 2014
Teeter mechanism for a multiple-bladed wind turbine
PERKINSON ROBERT H4 citations73
US8784055B2Jul 22, 2014
Propeller pitchlock un-locking device
PERKINSON ROBERT H3 citations63
US8182222B2May 22, 2012
Thermal protection of rotor blades
PERKINSON ROBERT H2 citations63
US8535007B2Sep 17, 2013
Hydraulic actuator locking device
PERKINSON ROBERT H0 citations52
US8496436B2Jul 30, 2013
Torque compensation for propeller pitch change mechanism
PERKINSON ROBERT H1 citations52
US8894418B2Nov 25, 2014
Retractable contact assembly
PERKINSON ROBERT H1 citations51
US9028222B2May 12, 2015
Variable output pump
PERKINSON ROBERT H0 citations42
HAMILTON SUNDSTRAND CORP
7 patentsUS6511292B2Jan 28, 2003
Backup governing system for a variable pitch propeller
HAMILTON SUNDSTRAND CORP20 citations92
US9973058B2May 15, 2018
Propeller in-hub power generation and control
HAMILTON SUNDSTRAND CORP12 citations84
US9970300B2May 15, 2018
Brush design for propeller deicing system
HAMILTON SUNDSTRAND CORP2 citations73
US9604729B2Mar 28, 2017
Aircraft control system and method
HAMILTON SUNDSTRAND CORP3 citations70
US9381997B2Jul 5, 2016
Propeller pitchlock system with a rotating interface
HAMILTON SUNDSTRAND CORP2 citations63
US10407163B2Sep 10, 2019
Aircraft control system and method
HAMILTON SUNDSTRAND CORP1 citations60
US9512728B2Dec 6, 2016
Simplified propeller balancing system and method
HAMILTON SUNDSTRAND CORP0 citations51
UNITED TECHNOLOGIES CORP
6 patentsUS4760662AAug 2, 1988
Hybrid fuel metering system
UNITED TECHNOLOGIES CORP25 citations91
US7341426B2Mar 11, 2008
Gas turbine engine blade tip clearance apparatus and method
UNITED TECHNOLOGIES CORP31 citations90
US4805658AFeb 21, 1989
Variable pressure regulating valve
UNITED TECHNOLOGIES CORP22 citations82
US4501157AFeb 26, 1985
Vortex shedding flow measuring transducer
UNITED TECHNOLOGIES CORP10 citations72
US9695802B2Jul 4, 2017
Wind turbine load mitigation
UNITED TECHNOLOGIES CORP0 citations52
US4898324AFeb 6, 1990
Metering valve temperature compensation
UNITED TECHNOLOGIES CORP1 citations47
PRATT & WHITNEY CANADA
3 patentsUS10094293B2Oct 9, 2018
In flight restart system and method for free turbine engine
PRATT & WHITNEY CANADA6 citations84
US11530647B2Dec 20, 2022
In flight restart system and method for free turbine engine
PRATT & WHITNEY CANADA0 citations62
US11131245B2Sep 28, 2021
In flight restart system and method for free turbine engine
PRATT & WHITNEY CANADA0 citations62