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Class Information
Number: 244/12.2
Name: Aeronautics > Aircraft, heavier-than-air > Airplane and fluid sustained > Circular
Description: Apparatus wherein the peripheral surface of either the aeronautical machine or the airfoil therefor is substantially in the form of a circle.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8646721 Fluid dynamic device with thrust control shroud Feb. 11, 2014
8602350 Flying body having an upper blower equipped with rotating blades for pumping air in axial flow direction Dec. 10, 2013
8500507 Directionally controllable flying vehicle and a propeller mechanism for accomplishing the same Aug. 6, 2013
8454405 Flying toy having gyroscopic and gliding components Jun. 4, 2013
8444081 High voltage flying apparatus employing multiple motors May. 21, 2013
8408489 Annular airborne vehicle Apr. 2, 2013
8408488 Safety flier--a parachute-glider air-vehicle with vertical take-off and landing capability Apr. 2, 2013
8387911 Ducted fan core for use with an unmanned aerial vehicle Mar. 5, 2013
8342441 VTOL vehicle with coaxially tilted or tiltable rotors Jan. 1, 2013
8328131 Annular airborne vehicle Dec. 11, 2012
8308104 Aircraft having a rotating turbine engine Nov. 13, 2012
8302901 Craft having a rotatable fluid propulsion device Nov. 6, 2012
8272593 Rotational bottom blade type flight vehicle Sep. 25, 2012
8262016 Annular airborne vehicle Sep. 11, 2012
8256705 Torque production vehicle and method Sep. 4, 2012
8182306 Flying toy having gyroscopic and gliding components May. 22, 2012
8181902 Aerodynamic lifting device and airborne craft May. 22, 2012
8113905 Directionally controllable flying vehicle and a propeller mechanism for accomplishing the same Feb. 14, 2012
8016225 Damage resistant aircraft Sep. 13, 2011
8011614 Bird vortex flying machine Sep. 6, 2011
7971823 Saucer shaped gyroscopically stabilized vertical take-off and landing aircraft Jul. 5, 2011
7857256 Thrust generating apparatus Dec. 28, 2010
7825554 Stabilizing power source for a vehicle Nov. 2, 2010
7802755 Rotating wing aircraft with tip-driven rotor and rotor guide-ring Sep. 28, 2010
7735774 VTOL aircraft with forward-swept fixed wing Jun. 15, 2010
7681832 Ducted fan air vehicle with deployable wings Mar. 23, 2010
7661624 Aerodynamic lifting-thrusting propulsion device Feb. 16, 2010
7611091 High speed vertical take-off and land aircraft with active fan balancing system Nov. 3, 2009
7581693 Shrouded nozzle arrangement Sep. 1, 2009
7556218 Aerodynamic lifting device and airborne craft Jul. 7, 2009
7294036 Flying disc Nov. 13, 2007
7204672 Multi-modal forced vortex device Apr. 17, 2007
7147183 Lift system for an aerial crane and propulsion system for a vehicle Dec. 12, 2006
7093788 Rotating flying wing aircraft and control system Aug. 22, 2006
7032859 Counter rotating ducted fan having a permanent magnet drive Apr. 25, 2006
6976653 VTOL micro-aircraft Dec. 20, 2005
6969027 Vertical takeoff and landing apparatus Nov. 29, 2005
6932296 Cycloidal VTOL UAV Aug. 23, 2005
6845942 Omni-directional air vehicle personal transportation system Jan. 25, 2005
6837457 Aircraft rotor and aircraft Jan. 4, 2005
6834829 Vertical lift aircraft having an enclosed rotary wing Dec. 28, 2004
6691949 Vertical takeoff and landing aerial vehicle Feb. 17, 2004
6672539 Power generation system Jan. 6, 2004
6669138 Rotary aeronautical lifting cell Dec. 30, 2003
6666403 Force-producing apparatus Dec. 23, 2003
6581872 Circular vertical take off & landing aircraft Jun. 24, 2003
6575402 Cooling system for a hybrid aircraft Jun. 10, 2003
6575401 Vertical-lift and horizontal flight aircraft Jun. 10, 2003
6572053 Flying vehicle of inverse sustentation (FVIS) Jun. 3, 2003
6565038 Supersonic propellers for aircrafts May. 20, 2003

1 2 3










 
 
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