| Patents for B64C 27 - Rotorcraft; Rotors peculiar thereto (10,112) |
|---|
| 08/08/1978 | US4105266 Laminated bearing with plural modulus layer |
| 08/01/1978 | US4104003 Rotor arrangement for rotary wing aircraft |
| 08/01/1978 | US4103848 Variable incidence helicopter stabilator and fail safe actuator |
| 07/11/1978 | US4099892 Helicopter rotors |
| 06/27/1978 | US4097193 Elastomeric damping arrangement |
| 06/20/1978 | US4096012 Method of forming a spar layup for an aerodynamic rotor blade |
| 06/20/1978 | US4095322 Method of fabricating a composite aerodynamic rotorblade assembly |
| 06/06/1978 | US4093400 Cross beam rotor |
| 06/06/1978 | US4093155 Steam powered tilting engine VTOL airplane |
| 05/30/1978 | US4092084 Rotor for an autogiro |
| 05/09/1978 | US4088284 Phasing control for convertiplane |
| 05/09/1978 | US4088042 Vibration isolation system |
| 05/02/1978 | US4087203 Cross beam rotor |
| 04/25/1978 | US4086024 Apparatus for connecting a rotor blade to a rotor hub |
| 04/18/1978 | US4084668 Redundant damper seals |
| 04/11/1978 | US4083656 Composite rotor blade |
| 04/11/1978 | US4083654 Extended arm bifilar and method to eliminate second order vibration excitation |
| 04/11/1978 | US4083518 Mast torque metering system |
| 04/04/1978 | US4082001 Non-destructive method for applying and removing instrumentation on helicopter rotor blades |
| 03/21/1978 | US4080098 Helicopter rotors |
| 03/14/1978 | US4078750 Speed-variable limits in fail-safe actuators |
| 03/14/1978 | US4078422 Adjusting the static moment of a rotor blade |
| 03/07/1978 | US4077741 Helicopter rotor blades |
| 03/07/1978 | US4077740 Helicopter rotor blades |
| 02/21/1978 | US4074952 Locking control and overtravel safety stop system for variable length rotor blades |
| 02/14/1978 | US4073600 Damping mechanism for the rotor hub of a helicopter for ground resonance and waddle and its combination with the rotor |
| 01/31/1978 | US4071206 Portable helicopter |
| 12/13/1977 | US4062508 Integrated helicopter flight control |
| 11/22/1977 | US4059247 Convertiblade |
| 11/15/1977 | US4058353 Roller bearing assembly with failsafe mechanism |
| 11/08/1977 | US4057363 Extended arm bifilar and method to eliminate second order vibration excitation |
| 10/11/1977 | US4053258 Tail-rotor arrangement for rotor crafts |
| 10/11/1977 | US4053126 Helicopter cabin and method of making same |
| 10/11/1977 | US4053123 Method and apparatus to determine need for rotor blade pitch adjustment and/or blade substitution |
| 09/27/1977 | US4050827 Force transmitting structural member |
| 09/13/1977 | US4047839 Torque reacting means for the hubs of cross beam rotors |
| 09/13/1977 | US4047838 Blade pitch control mechanism for helicopters |
| 09/06/1977 | US4046336 Vortex diffusion and dissipation |
| 09/06/1977 | US4046335 Helicopters safety drive |
| 08/30/1977 | US4045146 Helicopter rotor blade |
| 08/23/1977 | US4043421 Air car |
| 08/16/1977 | US4042070 Remote resonator apparatus and method |
| 08/09/1977 | US4040690 Laminated bearing |
| 07/26/1977 | US4037988 Flexure having pitch flap coupling |
| 06/28/1977 | US4032084 Helicopter type aircraft with ground effect structure |
| 06/28/1977 | US4032083 Automatic gain control for stability augmentation systems |
| 06/14/1977 | US4029946 Speed control device for moving objects |
| 06/14/1977 | US4029435 Retractable blade for a helicopter rotor |
| 06/14/1977 | US4029271 Automatic approach to hover system |
| 06/07/1977 | US4028003 Torsionally compliant helicopter rotor blade with improved stability and performance characteristics |
| 06/07/1977 | US4028002 Rotor blade retention system |
| 06/07/1977 | US4028001 Rotor for rotary wing aircraft |
| 06/07/1977 | US4028000 Blade connection for helicopter rotor blades |
| 06/07/1977 | US4027999 Analog mixer to vary helicopter rotor phase angle in flight |
| 05/31/1977 | US4026660 Crack detecting means for rotor blades of rotary wing aircrafts |
| 05/24/1977 | US4025230 Advanced control system for a rotor and/or a compound or rotary wing vehicle |
| 05/17/1977 | US4023409 Device for measurement of the speed of a helicopter |
| 05/10/1977 | US4022546 Helicopter rotor blade |
| 05/03/1977 | US4021141 Semi-rigid rotors for rotary wing aircraft |
| 03/29/1977 | US4014484 Vibration attenuating suspension system for rotary-wing aircraft rotors |
| 03/15/1977 | US4012169 Rotor for rotating wing type aircraft |
| 03/08/1977 | US4010919 Autogyro having blade tip jets |
| 03/01/1977 | US4009849 Fluid-stream driven aircraft |
| 02/22/1977 | US4008980 Composite helicopter spar and means to alleviate stress concentration |
| 02/22/1977 | US4008979 Control for helicopter having dual rigid rotors |
| 02/08/1977 | US4006884 Method and apparatus for aerial wire stringing through areas without vertical access |
| 02/01/1977 | US4005835 Automatic flight control means for rotary wing aircraft having attitude-air speed control |
| 01/25/1977 | US4004757 Oscillation damper for the hub of a rotorcraft rotor and its combination with a rotorcraft |
| 01/25/1977 | US4004756 Automatic flight control means for rotary wing aircraft |
| 01/04/1977 | US4000758 Fluid reservoir device with fill means, level indicator means and pressure relief means |
| 12/28/1976 | US3999888 Composite tip weight attachment |
| 12/28/1976 | US3999887 Propeller assembly |
| 12/28/1976 | US3999886 Hingeless helicopter rotor with improved stability |
| 12/28/1976 | US3999726 Helicopter pylon-fuselage coupling for expanded CG range |
| 12/14/1976 | US3997131 Rotor means for an aircraft |
| 12/07/1976 | US3995793 Roto-wing jet airplane |
| 11/09/1976 | US3990811 Circulation controlled rotary wing aircraft and control system therefor |
| 10/26/1976 | US3988074 Anhedral bifilar |
| 10/26/1976 | US3988073 Spherical bifilar tuning pin bushing |
| 10/19/1976 | US3986686 Aircraft with retractable rotor wing |
| 10/12/1976 | US3985318 Helicopter blade crack indicator |
| 09/21/1976 | US3981611 Electrical interconnection circuitry from a rotating body to a relatively stationary body |
| 09/21/1976 | US3981158 Disconnect coupling for drive shafts |
| 08/31/1976 | US3977812 Compound helicopter drive means |
| 08/31/1976 | US3977632 Helicopter power transmission systems |
| 08/31/1976 | US3977302 Fluid motor with releasable coupling |
| 08/24/1976 | US3976265 Semibuoyant composite aircraft |
| 08/03/1976 | US3972491 Two-position helicopter main rotor |
| 08/03/1976 | US3972396 Leakage detector with back pressure sensor |
| 07/27/1976 | US3971536 Combined helicopter flight controller |
| 07/06/1976 | US3967996 Method of manufacture of hollow pieces |
| 07/06/1976 | US3967918 Rotor for rotating wing type aircraft |
| 06/29/1976 | US3966145 Structure for cooling helicopter tail rotor gearbox |
| 06/22/1976 | US3964838 Balanced airflow control valve for helicopter blade |
| 06/15/1976 | US3963372 Helicopter power plant control |
| 06/01/1976 | US3960348 Aerodynamic surface control feel augmentation system |
| 05/18/1976 | US3957227 Rotor pitch control mechanism |
| 05/18/1976 | US3957226 Helicopter yaw and propulsion mechanism |
| 05/04/1976 | US3954229 Automatic one-per-rev control system |
| 04/27/1976 | US3952601 Helicopter rotor blade balancing method |