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Class Information
Number: 244/17.21
Name: Aeronautics > Aircraft, heavier-than-air > Helicopter or auto-rotating wing sustained, i.e., gyroplanes > With auxiliary propulsion, counter-troque or steering device > Auxiliary rotor
Description: Gyroplanes in which the additional means is rotatable.










Patents under this class:

Patent Number Title Of Patent Date Issued
8690096 Aircraft with dual flight regimes Apr. 8, 2014
8615980 Gas turbine engine with noise attenuating variable area fan nozzle Dec. 31, 2013
8596569 Front electric rotor helicopter Dec. 3, 2013
8573528 Vertical take-off and vertical landing gyroplane Nov. 5, 2013
8500062 Rotor blade spacing for vibration attenuation Aug. 6, 2013
8447439 Three-way airplane model control system with 2.4G communication mode May. 21, 2013
8430353 Helicopter torque counteraction device Apr. 30, 2013
8231077 Torque counter-action device Jul. 31, 2012
8196855 Helicopter auxiliary anti-torque system Jun. 12, 2012
8167233 Coaxial rotor aircraft May. 1, 2012
8056851 Helicopter antitorque tail rotor Nov. 15, 2011
8042762 Vertical take-off tilt rotor aircraft Oct. 25, 2011
7926759 Tail rotor hub Apr. 19, 2011
7631834 Aerial robot with dispensable conductive filament Dec. 15, 2009
7510142 Aerial robot Mar. 31, 2009
7427046 Optimized method of controlling yaw for rotary-wing aircraft, and a system for implementing it Sep. 23, 2008
7231997 Hybrid drive powered lift platform Jun. 19, 2007
6416015 Anti-torque and yaw-control system for a rotary-wing aircraft Jul. 9, 2002
6305640 Spring component and support bearing for helicopter tail rotors and support structure for use in outer space Oct. 23, 2001
6142413 Device for control of an aerodynamic steering surface of a helicopter Nov. 7, 2000
6065718 Universal VTOL power and rotor system module May. 23, 2000
5996933 Aircraft Dec. 7, 1999
5607122 Tail rotor authority control for a helicopter Mar. 4, 1997
5505407 Air-land vehicle Apr. 9, 1996
5297759 Rotary aircraft passively stable in hover Mar. 29, 1994
5289994 Equipment carrying remote controlled aircraft Mar. 1, 1994
5269654 Tail rotor assembly for helicopters Dec. 14, 1993
5251847 Tail rotor anti-torque system for a helicopter Oct. 12, 1993
5203520 Helicar Apr. 20, 1993
5195700 Low speed model following velocity command system for rotary wing aircraft Mar. 23, 1993
5174523 Compound helicopter with engine shaft power output control Dec. 29, 1992
5167384 Increasing lift on helicopter rotor blades and aircraft propellers Dec. 1, 1992
5042747 Vertical take-off aircraft Aug. 27, 1991
4809931 Directional and stabilizing device having a faired and slanted antitorque rotor and a disymmetric "V" empennage, and a helicopter equipped with such a device Mar. 7, 1989
4768737 Helicopter control system Sep. 6, 1988
4759514 Tail rotor yaw position control for a helicopter Jul. 26, 1988
4730795 Heliplane Mar. 15, 1988
4529155 Redundant tail rotor control system Jul. 16, 1985
4506849 Helicopter rotor thrust ring Mar. 26, 1985
4493465 Helicopter engine torque compensator Jan. 15, 1985
4488851 Power management system Dec. 18, 1984
4347997 Helicopters Sep. 7, 1982
4272041 Model helicopter device Jun. 9, 1981
4245801 Tail rotor control cable-pylon fold accommodation Jan. 20, 1981
4010919 Autogyro having blade tip jets Mar. 8, 1977
3930625 Steam-powered aircraft Jan. 6, 1976











 
 
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