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Class Information
Number: 244/17.19
Name: Aeronautics > Aircraft, heavier-than-air > Helicopter or auto-rotating wing sustained, i.e., gyroplanes > With auxiliary propulsion, counter-troque or steering device
Description: Gyroplanes combined with means in addition to the rotating wing and operating during flight to (1) propel the craft, (2) counteract the torque of the rotating wing, or (3) steer the aircraft.










Sub-classes under this class:

Class Number Class Name Patents
244/17.21 Auxiliary rotor 46


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8640984 Counter-torque device for a helicopter Feb. 4, 2014
8636243 Anti-torque nozzle system with internal sleeve valve for a rotorcraft Jan. 28, 2014
8636244 Propulsive anti-torque nozzle system with rotating thrust director for a rotorcraft Jan. 28, 2014
8636242 Propulsive anti-torque nozzle system with external rotating sleeve for a rotorcraft Jan. 28, 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
8561938 Directional control for a helicopter Oct. 22, 2013
8561937 Unmanned aerial vehicle Oct. 22, 2013
8556207 Helicopter with counter-rotating coaxial rotors without cyclic variation of pitch, equipped with means for aerodynamic control of attitude and flight path Oct. 15, 2013
8534596 Planetary de-rotation system for a shaft fairing system Sep. 17, 2013
8469308 Aircraft wing extension and nozzle system Jun. 25, 2013
8464980 Power plant, a helicopter including such a power plant, and a method implemented by said power plant Jun. 18, 2013
8430353 Helicopter torque counteraction device Apr. 30, 2013
8424798 Aircraft with helicopter rotor, thrust generator and assymetric wing configuration Apr. 23, 2013
8376266 Method of controlling a hybrid helicopter in yaw, and a hybrid helicopter provided with a yaw control device suitable for implementing said method Feb. 19, 2013
8336808 Aircraft having helicopter rotor and front mounted propeller Dec. 25, 2012
8297549 Helicopter rotor Oct. 30, 2012
8286908 Counter-torque device for a helicopter Oct. 16, 2012
8240617 Variable damping of haptic feedback for a flight-attitude changing linkage of an aircraft Aug. 14, 2012
8231077 Torque counter-action device Jul. 31, 2012
8196855 Helicopter auxiliary anti-torque system Jun. 12, 2012
8186629 Method and a device for optimizing the operation of propulsive propellers disposed on either side of a rotorcraft fuselage May. 29, 2012
8181901 Fast hybrid helicopter with long range and proportional drive to the rotor and the propeller May. 22, 2012
8096497 Power assembly and a coaxial twin propeller model helicopter using the same Jan. 17, 2012
8074921 Helicopter rotor Dec. 13, 2011
8074920 Helicopter having means for the aerodynamic support of the torque equalization Dec. 13, 2011
8011614 Bird vortex flying machine Sep. 6, 2011
7992820 Tandem powered tilt rotor aircraft Aug. 9, 2011
7967239 Rotor drive and control system for a high speed rotary wing aircraft Jun. 28, 2011
7959105 Aircraft provided with a silent shrouded rotor Jun. 14, 2011
RE42446 Emergency anti-torque thruster system Jun. 14, 2011
7950603 Integral powered wing aircraft May. 31, 2011
7946526 Rotary-wing vehicle system May. 24, 2011
7942365 Variable speed transmission for a rotary wing aircraft May. 17, 2011
7931230 Personal land and air vehicle Apr. 26, 2011
7871032 Helicopter Jan. 18, 2011
7823827 Vectored thruster augmented aircraft Nov. 2, 2010
7779965 Absorbent structure for attenuating noise particular by a rotor-generator noise, and a rotor duct including such a structure Aug. 24, 2010
7731121 Propulsive anti-torque system for rotorcraft Jun. 8, 2010
7651050 Variable speed gearbox with an independently variable speed tail rotor system for a rotary wing aircraft Jan. 26, 2010
7644887 Yaw control system and method Jan. 12, 2010
7631834 Aerial robot with dispensable conductive filament Dec. 15, 2009
7621480 De-rotation system for a counter-rotating, coaxial rotor hub shaft fairing Nov. 24, 2009
7607607 De-rotation system suitable for use with a shaft fairing system Oct. 27, 2009
7539561 Autonomous control system apparatus and program for a small, unmanned helicopter May. 26, 2009
7510142 Aerial robot Mar. 31, 2009
7461819 Method for using a steerable tall fin to reduce the vibration generated on the fuselage of a helicopter Dec. 9, 2008
7451949 Method for using a tiltable stabilizer to reduce vibration generated on the fuselage of a helicopter Nov. 18, 2008
7395988 Rotor wing aircraft having an adjustable tail nozzle Jul. 8, 2008

1 2 3 4










 
 
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