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Class Information
Number: 114/54
Name: Ships > Vessel raising and docking > Submerged > Air tanks > Inflatable bags
Description: Bags or receptacles for containing air adapted to be attached or secured to or in sunken vessels when empty and by inflation raise the same by buoyancy.

Patents under this class:

Patent Number Title Of Patent Date Issued
7250568 Underwater vehicle deceleration and positive buoyancy assembly Jul. 31, 2007
6598550 Emergency buoyancy system for a vessel Jul. 29, 2003
6409431 Submersible floating dock Jun. 25, 2002
6269761 Buoyancy device Aug. 7, 2001
5860379 Inflatable floating boat lift Jan. 19, 1999
5666898 Equipment for raising sunken vessels Sep. 16, 1997
5341756 Storage means for watercraft Aug. 30, 1994
5286462 Gas generator system for underwater buoyancy Feb. 15, 1994
5257952 Deployment system for secondary propulsor unit Nov. 2, 1993
5094181 Emergency float system for water craft Mar. 10, 1992
5007364 Gas control valves and apparatus for controlling buoyancy in water Apr. 16, 1991
4979451 Under water air lift utility bag Dec. 25, 1990
4674429 Underwater buoyancy apparatus Jun. 23, 1987
4658745 Collapsible salvage drum and method Apr. 21, 1987
4510878 Volume-adjustable divers lift bag Apr. 16, 1985
4506623 Non-rigid buoyant marine storage vessels for fluids Mar. 26, 1985
4498408 Lifting body for diving Feb. 12, 1985
4495880 Draft assisted delivery system Jan. 29, 1985
4433633 Controlled gas generator system Feb. 28, 1984
4271552 Torpedo floatation device Jun. 9, 1981
4199006 Pneumatic valve Apr. 22, 1980
4104425 Power cell driven by a gaseous or liquid pressure medium Aug. 1, 1978
4092756 Diver's buoyant caddy Jun. 6, 1978
4078509 Salvage apparatus and method Mar. 14, 1978
3940814 Portable salvage lift Mar. 2, 1976

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