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Class Information
Number: 244/24
Name: Aeronautics > Aircraft, lighter-than-air
Description: Miscellaneous aircraft which ordinarily have a total weight less than or equal to that of the volume of air which they displace and are therefore sustained by their buoyancy with respect to the air.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7571875 |
Device and method for sealing and lighting a balloon |
Aug. 11, 2009 |
| 7568656 |
System for controlling the lift of aircraft |
Aug. 4, 2009 |
| 7478779 |
Device and method for sealing and lighting a balloon |
Jan. 20, 2009 |
| 7448572 |
Direct mounted propulsion for non-rigid airships |
Nov. 11, 2008 |
| 7380750 |
Method for lighter-than-air aircraft |
Jun. 3, 2008 |
| 7341223 |
Hybrid unmanned vehicle for high altitude operations |
Mar. 11, 2008 |
| 7317261 |
Power generating apparatus |
Jan. 8, 2008 |
| 7263939 |
Simplified elevated sailing apparatus |
Sep. 4, 2007 |
| 7264202 |
Tri-cycloidal airship |
Sep. 4, 2007 |
| 7147184 |
Aerodynamic fairing system for airship |
Dec. 12, 2006 |
| 7129596 |
Hovering wind turbine |
Oct. 31, 2006 |
| 7093789 |
Delta-winged hybrid airship |
Aug. 22, 2006 |
| 7055778 |
Apparatus and method for lighter-than-air aircraft |
Jun. 6, 2006 |
| 6925949 |
Elevated sailing apparatus |
Aug. 9, 2005 |
| 6896222 |
Hydrogen lighter-than-air ship |
May. 24, 2005 |
| 6834829 |
Vertical lift aircraft having an enclosed rotary wing |
Dec. 28, 2004 |
| 6739549 |
Dirigible balloon rigidified by helium tanks |
May. 25, 2004 |
| 6607163 |
Autonomous stratospheric airship |
Aug. 19, 2003 |
| 6581873 |
Hybrid winged airship (dynastat) |
Jun. 24, 2003 |
| 6565037 |
Hybrid aircraft and methods of flying |
May. 20, 2003 |
| 6402090 |
Balloon trajectory control system |
Jun. 11, 2002 |
| 6386480 |
Autonomous stratospheric airship |
May. 14, 2002 |
| 6357700 |
Electrically powered spacecraft/airship |
Mar. 19, 2002 |
| 6354535 |
Autonomous stratospheric airship |
Mar. 12, 2002 |
| 6328257 |
Cruise airship with an anchoring device and a helium tempering device |
Dec. 11, 2001 |
| 6325330 |
Power generation, transmission, and distribution system for an aerostat using a lightweight tether |
Dec. 4, 2001 |
| 6224015 |
Aerial cableway leading to an aerostatic airborne body |
May. 1, 2001 |
| 6189829 |
Apparatus and method utilizing cells to provide lift in lighter-than-air airships |
Feb. 20, 2001 |
| 6119983 |
Airship/spacecraft |
Sep. 19, 2000 |
| 6010093 |
High altitude airship system |
Jan. 4, 2000 |
| 5906335 |
Flight direction control system for blimps |
May. 25, 1999 |
| 5470032 |
Airborne monitoring system and method |
Nov. 28, 1995 |
| 5090637 |
Helium purification system for lighter-than-air aircraft |
Feb. 25, 1992 |
| 5056447 |
Rein-deer kite |
Oct. 15, 1991 |
| 4995572 |
High altitude multi-stage data acquisition system and method of launching stratospheric altitude air-buoyant vehicles |
Feb. 26, 1991 |
| 4773617 |
Lighter-than-air craft |
Sep. 27, 1988 |
| 4768738 |
Flexible solar skin in combination with an airplane |
Sep. 6, 1988 |
| 4366936 |
Aircraft having buoyant gas balloon |
Jan. 4, 1983 |
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