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Inventor

FERRIS DONALD L

22 patents
⚠️ This page may combine multiple inventors who share the name “FERRIS DONALD L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

UNITED TECHNOLOGIES CORP

19 patents
US4244677AJan 13, 1981

Cross-beam helicopter rotor with readily replaceable snubber

UNITED TECHNOLOGIES CORP69 citations95
US4714450ADec 22, 1987

Elastomeric high torque, constant velocity joint

UNITED TECHNOLOGIES CORP27 citations92
US4688993AAug 25, 1987

Tangential link swashplate centering member

UNITED TECHNOLOGIES CORP69 citations92
US4373862AFeb 15, 1983

Rotor blade shaft integrity monitoring system

UNITED TECHNOLOGIES CORP44 citations92
US4299538ANov 10, 1981

Cross beam rotor

UNITED TECHNOLOGIES CORP30 citations92
US4439106AMar 27, 1984

Rotor blade shaft integrity monitoring system

UNITED TECHNOLOGIES CORP32 citations90
US4804315AFeb 14, 1989

Composite helicopter swashplate

UNITED TECHNOLOGIES CORP24 citations88
US4797064AJan 10, 1989

Composite helicopter rotor hub

UNITED TECHNOLOGIES CORP22 citations82
US4284387AAug 18, 1981

Blade fold restraint system

UNITED TECHNOLOGIES CORP28 citations82
US4235570ANov 25, 1980

Elastomeric helicopter rotor load reaction system

UNITED TECHNOLOGIES CORP25 citations81
US4178130ADec 11, 1979

Helicopter rotor having lead-lag damper operable with pitch and flap decoupling

UNITED TECHNOLOGIES CORP22 citations81
US4047838ASep 13, 1977

Blade pitch control mechanism for helicopters

UNITED TECHNOLOGIES CORP25 citations81
US4569629AFeb 11, 1986

Helicopter gimbal rotor

UNITED TECHNOLOGIES CORP19 citations80
US4676669AJun 30, 1987

Tailoring tilt in an elastomeric high torque, constant velocity joint

UNITED TECHNOLOGIES CORP8 citations74
US4575358AMar 11, 1986

Accommodating axial load in an elastomeric high torque, constant velocity joint

UNITED TECHNOLOGIES CORP17 citations74
US4645423AFeb 24, 1987

Tension/compression rod arrangement for damping helicopter rotor blade oscillations

UNITED TECHNOLOGIES CORP10 citations73
US4588355AMay 13, 1986

Flexible swashplate centering member

UNITED TECHNOLOGIES CORP14 citations72
US4242047ADec 30, 1980

Adjustable bearing centering means for helicopter rotor elastomeric bearings

UNITED TECHNOLOGIES CORP2 citations63
US4668115AMay 26, 1987

Helicopter rotor spindle retention assembly

UNITED TECHNOLOGIES CORP6 citations54

US ARMY

2 patents

US NAVY

1 patent