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Class Information
Number: 244/34A
Name: Aeronautics > Aircraft sustentation > Annular airfoils
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
8573530 Aircraft with rear annular tail Nov. 5, 2013
8408489 Annular airborne vehicle Apr. 2, 2013
8387912 Lifting foil Mar. 5, 2013
8328131 Annular airborne vehicle Dec. 11, 2012
8262016 Annular airborne vehicle Sep. 11, 2012
8070092 Noise-suppressing strut support system for an unmanned aerial vehicle Dec. 6, 2011
7988088 Tubular air transport vehicle Aug. 2, 2011
7945353 Adaptive control in the presence of input constraints May. 17, 2011
7857256 Thrust generating apparatus Dec. 28, 2010
7461813 Air input device for a turboprop engine Dec. 9, 2008
7294036 Flying disc Nov. 13, 2007
7100867 Lifting foil Sep. 5, 2006
6976653 VTOL micro-aircraft Dec. 20, 2005
6691949 Vertical takeoff and landing aerial vehicle Feb. 17, 2004
6669138 Rotary aeronautical lifting cell Dec. 30, 2003
6607162 Ring-wing aircraft Aug. 19, 2003
6450446 Counter rotating circular wing for aircraft Sep. 17, 2002
6071363 Single-cast, high-temperature, thin wall structures and methods of making the same Jun. 6, 2000
6056238 Supersonic ground vehicle May. 2, 2000
RE36487 Airplane with variable-incidence wing Jan. 11, 2000
5839690 Inertial acceleration aircraft Nov. 24, 1998
5503352 Light-duty box-wing aeroplane Apr. 2, 1996
5503351 Circular wing aircraft Apr. 2, 1996
5351913 Coaxial transmission/center hub subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors Oct. 4, 1994
5332177 Aircraft Jul. 26, 1994
5190242 Model jet helicopter with solid-circular rotor blade Mar. 2, 1993
5155992 Method and means for generating a force Oct. 20, 1992
5150857 Shroud geometry for unmanned aerial vehicles Sep. 29, 1992
5119748 Sailing system employing radial force sail Jun. 9, 1992
5086993 Airplane with variable-incidence wing Feb. 11, 1992
4967983 Airship Nov. 6, 1990
4854907 "ESU" flying ring Aug. 8, 1989
4804155 VTOL aircraft Feb. 14, 1989
4790788 Aerial toy Dec. 13, 1988
4718320 Towed decoy system Jan. 12, 1988
4677928 Circular linked rotating foil assembly for vessels Jul. 7, 1987
4560358 Gliding ring Dec. 24, 1985
4531323 Toy glider system Jul. 30, 1985
4456265 Gliding ring Jun. 26, 1984
4436264 Flying device Mar. 13, 1984
4390148 Rotary wing device Jun. 28, 1983
4307856 Annular wing Dec. 29, 1981
4248007 Flying toy Feb. 3, 1981
4037807 Flight vehicle Jul. 26, 1977
3987981 Roll control for aircraft, particularly flying barrels, adapted to be driven by means of ducted fans Oct. 26, 1976
3968944 Aircraft with shrouded propeller drive Jul. 13, 1976











 
 
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