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Class Information
Number: 244/28
Name: Aeronautics > Aircraft, lighter-than-air > Airship and beating wing sustained
Description: Propelled aeronautical machines sustained by their buoyancy relative to the air, having also provision for sustentation or vertical lift by the downward thrust developed by flapping or reciprocating blades attached to the machines. These blades may also provide a part or all of the forward propulsion.

Patents under this class:

Patent Number Title Of Patent Date Issued
8645005 Multipurpose modular airship systems and methods Feb. 4, 2014
7255305 Flying device utilizing natural principles Aug. 14, 2007
6540177 Flying object by flapping motion of wings equipped with compressed air engine Apr. 1, 2003
6530540 Flapping-wing flying device Mar. 11, 2003
6064923 Aircraft with reduced wing structure loading May. 16, 2000
5931411 Hovering aircraft Aug. 3, 1999
5518205 High altitude, long duration surveillance system May. 21, 1996
5194029 Floatable structure propelling mechanism Mar. 16, 1993
4415124 Method for the production of micropowders from cellulose ethers or cellulose Nov. 15, 1983

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