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Class Information
Number: 244/29
Name: Aeronautics > Aircraft, lighter-than-air > Airship and fluid sustained
Description: Propelled aeronautical machines sustained by their buoyancy relative to the air, having also provision for sustentation by the reaction to downward movement of restricted masses or jets of air or other fluid. The forward propulsion of the machine may also be derived from movement of the same or similar masses or jets of air or other fluid.

Patents under this class:

Patent Number Title Of Patent Date Issued
8678309 Lifting gas replenishment in a tethered airship system Mar. 25, 2014
8668161 Systems and methods for long endurance stratospheric operations Mar. 11, 2014
8645005 Multipurpose modular airship systems and methods Feb. 4, 2014
8485465 Long mission tethered aerostat and method of accomplishing Jul. 16, 2013
8418952 Lenticular airship Apr. 16, 2013
8286909 Boundary layer propulsion airship with related system and method Oct. 16, 2012
8168283 Highly reflective materials for use as logos and/or identification May. 1, 2012
8167236 Hybrid lift air vehicle May. 1, 2012
8158236 Conductive seam cover tape Apr. 17, 2012
8109462 Lenticular airship Feb. 7, 2012
8083174 Long mission tethered aerostat and method of accomplishing Dec. 27, 2011
7891603 Differential thrust control system Feb. 22, 2011
7875795 Thermocouple array for generating electrical power for lighter than air vehicles Jan. 25, 2011
7472865 Dehumidification system for an airship Jan. 6, 2009
7354636 Flexible laminate material for lighter-than-air vehicles Apr. 8, 2008
7261255 Transformable airship Aug. 28, 2007
7137592 High-aspect ratio hybrid airship Nov. 21, 2006
6877693 Aerostat for transporting equipment and passengers Apr. 12, 2005
6824098 VTOL parafoil aircraft Nov. 30, 2004
6641083 Balloon Nov. 4, 2003
6574838 Tie-down device and method Jun. 10, 2003
6565037 Hybrid aircraft and methods of flying May. 20, 2003
6016991 Evacuated rotating envelope aircraft Jan. 25, 2000
5909857 Filimonov hybrid dirigible craft Jun. 8, 1999
5810286 Lighter-than-air aircraft Sep. 22, 1998
5755402 Discoid airship May. 26, 1998
5358200 Airship Oct. 25, 1994
5348251 Dirigible airship Sep. 20, 1994
5115997 Surveillance balloon May. 26, 1992
5071090 Airship Dec. 10, 1991
4967983 Airship Nov. 6, 1990
4838501 Balopod (hybrid flying machine) Jun. 13, 1989
4685640 Air vehicle Aug. 11, 1987
4606515 Hybrid annular airship Aug. 19, 1986
4402475 Thrusters for airship control Sep. 6, 1983

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