| Patents for B64C 27 - Rotorcraft; Rotors peculiar thereto (10,112) |
|---|
| 06/17/1980 | US4208025 Rotary wing aircraft |
| 06/17/1980 | US4207758 High speed shaft flexible coupling with maximum shaft misalignment accommodation capability |
| 06/10/1980 | CA1079182A1 Cable-cutting device |
| 05/27/1980 | CA1078357A1 Torsionally compliant helicopter rotor blade with improved stability and performance characteristics |
| 05/27/1980 | CA1078354A1 Helicopter rotor lead-lag damper |
| 05/20/1980 | US4203709 Helicopter rotor and blade connection |
| 05/20/1980 | US4203708 Elastomeric rotor load reaction system |
| 05/13/1980 | CA1077453A1 Elastomeric bearing for helicopter rotor |
| 05/06/1980 | US4201815 Shear transfer element |
| 05/06/1980 | US4201515 Rotor without flapping hinges and without lead-lag hinges |
| 04/29/1980 | US4200252 Helicopter antitorque system using circulation control |
| 04/01/1980 | US4195967 Rotor free of flapping hinges and free of lead-lag hinges |
| 04/01/1980 | US4195966 Pitch control system for helicopter rotor blades |
| 04/01/1980 | US4195802 Kinesthetic tactile display system |
| 04/01/1980 | US4195800 Autogyros |
| 04/01/1980 | CA1074760A1 Cross beam rotor |
| 03/18/1980 | CA1073885A1 Cross beam rotor |
| 03/05/1980 | EP0008585A1 Vibration absorber and use thereof in a helicopter |
| 03/04/1980 | CA1073074A1 Aerodynamic surface load sensing |
| 02/20/1980 | EP0008303A1 Constant frequency bifilar vibration absorber |
| 02/19/1980 | US4189283 Rotor hub for a helicopter |
| 02/12/1980 | US4188171 Rotor blade internal damper |
| 02/05/1980 | US4186975 Bearing seal and lubricating device |
| 02/05/1980 | US4186568 Tunable link |
| 01/23/1980 | EP0007317A2 Helicopter with stabilator detuned in antisymmetric vibration modes from main rotor wake excitation frequency |
| 01/22/1980 | US4184654 Rotor aircraft |
| 01/15/1980 | US4183718 Rotor for a rotary wing aircraft |
| 01/08/1980 | US4182597 Helicopter rotor head |
| 01/01/1980 | US4181024 Helicopter rotor system related vibration amplitude detecting system |
| 12/12/1979 | EP0006088A2 Tuned spring-mass vibration absorber |
| 12/11/1979 | US4178130 Helicopter rotor having lead-lag damper operable with pitch and flap decoupling |
| 12/11/1979 | US4177693 Drive system |
| 12/11/1979 | CA1067876A1 Vibration isolation system |
| 11/27/1979 | US4175913 Helicopter rotor head mounting assembly |
| 11/20/1979 | CA1066683A1 Helicopter rotor and transmission mounting and vibration isolation system |
| 11/06/1979 | US4173321 Vehicle for traveling in the air and on the ground equipped with hydraulically driven propellers |
| 10/23/1979 | US4171784 Combination road and air vehicle having a lowerable chassis |
| 10/16/1979 | CA1064455A1 Anhedral bifilar |
| 10/09/1979 | US4170437 Helicopter primary flight controls |
| 10/02/1979 | US4169749 Method of making a hollow airfoil |
| 10/02/1979 | US4169567 Helicopter lifting and propelling apparatus |
| 09/25/1979 | US4168939 Acoustically swept rotor |
| 09/11/1979 | CA1062226A1 Extended arm bifilar and method to eliminate second order vibration excitation |
| 08/21/1979 | US4165059 Float assembly for a helicopter or the like |
| 08/07/1979 | US4163630 Helicopter rotor structure |
| 08/07/1979 | US4163535 Unmanned multimode helicopter |
| 07/24/1979 | CA1059097A2 Grip-yoke assembly with a redundant centrifugal load support |
| 07/17/1979 | CA1058413A1 Mast torque metering system |
| 05/29/1979 | US4156583 Hub assembly |
| 05/15/1979 | US4154557 Helicopter rotor structure |
| 05/08/1979 | US4153390 Helicopter rotor structure |
| 04/24/1979 | US4150920 Rotor blade tipweight assembly |
| 04/24/1979 | CA1053211A1 Control for helicopter having dual rigid rotors |
| 03/27/1979 | US4145936 Vibration absorbers |
| 03/13/1979 | CA1050634A1 Aerodynamic surface control feel augmentation system |
| 03/06/1979 | US4142837 Helicopter blade |
| 03/06/1979 | US4142833 Elastomeric bearing for helicopter rotor |
| 03/06/1979 | US4142697 Mechanism for synchronously varying diameter of a plurality of rotors and for limiting the diameters thereof |
| 03/06/1979 | CA1049995A1 Rotary wing aircrafts |
| 02/27/1979 | US4141664 Rotary blade retention system |
| 02/20/1979 | US4140028 Vibration isolation system |
| 02/20/1979 | CA1049115A1 Helicopter blade crack indicator |
| 02/13/1979 | US4139331 Rotor for a helicopter |
| 02/13/1979 | CA1048472A1 Rotary blade retention system |
| 02/06/1979 | US4137721 Control system for plural engines |
| 01/30/1979 | US4137010 Constant lift rotor for a heavier than air craft |
| 01/30/1979 | US4137007 Rotor blade structure |
| 01/30/1979 | US4136846 Composite structure |
| 01/30/1979 | US4136845 Hydraulically operated aircraft with a retractable propeller |
| 01/23/1979 | US4135856 Rotor blade retention system |
| 01/16/1979 | US4134560 Helicopter control device |
| 01/09/1979 | CA1045947A1 Redundant damper seals |
| 01/02/1979 | US4132500 Controllable and programmable fluid flow modulation system |
| 01/02/1979 | CA1045611A1 Helicopters |
| 12/26/1978 | US4131391 Rotor hub and oil seal |
| 12/26/1978 | US4131390 Circulation controlled rotor blade |
| 12/19/1978 | US4130377 Helicopter blade and rotor |
| 12/19/1978 | US4130259 Helicopter collective lever |
| 12/12/1978 | US4129403 Helicopter rotors |
| 11/28/1978 | US4127245 Helicopter pitch rate feedback bias for pitch axis maneuvering stability and load feel |
| 11/21/1978 | CA1042863A1 Vehicle with propellers which are driven and controlled by fluid operated motors |
| 11/14/1978 | CA1042528A1 Electrical interconnection circuitry from a rotating body to a relatively stationary body |
| 11/14/1978 | CA1042410A1 Helicopter type aircraft with ground effect structure |
| 10/31/1978 | CA1041469A1 Analog mixer to vary helicopter rotor phase angle in flight |
| 10/24/1978 | US4121483 Aircraft flight control system |
| 10/24/1978 | CA1041067A1 Tow-position helicopter main rotor |
| 10/17/1978 | US4120610 Helicopter blade structure |
| 10/03/1978 | US4118143 Stabilizing and control device for two-bladed helicopter rotors |
| 09/19/1978 | US4115755 Aerodynamic surface load sensing |
| 09/19/1978 | US4115031 Hub spring moment isolation in underslung two-bladed teetering rotor |
| 09/19/1978 | US4114962 Connecting element for introducing forces into a structural part |
| 09/05/1978 | US4111605 Composite hingeless rotor hub for rotary wing aircraft |
| 09/05/1978 | US4111386 Helicopter rotor and transmission mounting and vibration isolation system |
| 09/05/1978 | US4111068 Locking redundant link |
| 08/29/1978 | US4110056 Fibre reinforced plastics structure |
| 08/29/1978 | CA1037451A1 Spherical bifilar tuning pin bushing |
| 08/22/1978 | US4108508 Frustroconical laminated bearing |
| 08/15/1978 | US4106728 Fail safe force feel system |
| 08/15/1978 | US4106332 Recording monitor for structure faults |
| 08/08/1978 | US4105365 Helicopter rotor lead-lag damper |