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Class Information
Number: 244/73B
Name: Aeronautics > Aircraft propulsion > Fluid > Vacuum induced by radial flow

Patents under this class:

Patent Number Title Of Patent Date Issued
7686579 Ducted fan Mar. 30, 2010
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
6666403 Force-producing apparatus Dec. 23, 2003
6375117 Flying vehicle and method Apr. 23, 2002
5829714 Aerolift mechanism Nov. 3, 1998
5328131 Vector rotary wing ensemble Jul. 12, 1994
5203521 Annular body aircraft Apr. 20, 1993
5178344 VTOL aircraft Jan. 12, 1993
5054713 Circular airplane Oct. 8, 1991
5031859 Lift-producing machine or device Jul. 16, 1991
4941628 Lift generating apparatus, in aircraft employing the lift generating apparatus, and a lift generating method Jul. 17, 1990
4674708 Amphibious discoidal aircraft Jun. 23, 1987
4566699 Flying apparatus and method Jan. 28, 1986
4301981 Aircraft with rotary wing Nov. 24, 1981
3972494 Vehicle air screen apparatus Aug. 3, 1976

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