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Class Information
Number: 137/81.2
Name: Fluid handling > Ambient condition change responsive > Underwater
Description: Apparatus in which control of a flow of fluid is responsive to a variation in a condition of, or in an environment beneath the surface of a body of water.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7331345 |
Demand regulator protective bellows |
Feb. 19, 2008 |
| 7108006 |
Subsea actuator assemblies and methods for extending the water depth capabilities of subsea actuator assemblies |
Sep. 19, 2006 |
| 7025093 |
Polyurethane elastomer gel insulating composition and use thereof |
Apr. 11, 2006 |
| 6964304 |
Technique for maintaining pressure integrity in a submersible system |
Nov. 15, 2005 |
| 6725861 |
Valve for underwater aqualung supplying devices |
Apr. 27, 2004 |
| 6273019 |
Regulated pressurized system and pressure regulator for use in an ambient fluid environment, and method of pressure regulation |
Aug. 14, 2001 |
| 6148858 |
Pressure balanced couplings |
Nov. 21, 2000 |
| 6125874 |
Gate valve having fail safe actuator |
Oct. 3, 2000 |
| 5826658 |
Riser fill-up valve |
Oct. 27, 1998 |
| 5810041 |
Pressure regulator |
Sep. 22, 1998 |
| 5697396 |
Air feed valve and exhaust valve to be attached to an underwater suit |
Dec. 16, 1997 |
| 5592962 |
Compressed gas release system |
Jan. 14, 1997 |
| 5542446 |
Scuba buoyancy control valve |
Aug. 6, 1996 |
| 5507308 |
Gas pressure regulator |
Apr. 16, 1996 |
| 5469887 |
Hydraulic coupling with pressure equalizing valve |
Nov. 28, 1995 |
| 5357999 |
Subsea control systems and apparatus |
Oct. 25, 1994 |
| 5191317 |
Low air warning system for scuba divers |
Mar. 2, 1993 |
| 5184609 |
Divers first stage adjustable regulator |
Feb. 9, 1993 |
| 5036660 |
Dual actuation harness fitting release |
Aug. 6, 1991 |
| 5007364 |
Gas control valves and apparatus for controlling buoyancy in water |
Apr. 16, 1991 |
| 4951698 |
Process and devices for maintaining the gas contained in a submerged enclosure in pressure equilibrium with the outside |
Aug. 28, 1990 |
| 4832126 |
Diverter system and blowout preventer |
May. 23, 1989 |
| 4800373 |
Low pressure warning device for scuba divers |
Jan. 24, 1989 |
| 4777800 |
Static head charged hydraulic accumulator |
Oct. 18, 1988 |
| 4674429 |
Underwater buoyancy apparatus |
Jun. 23, 1987 |
| 4650151 |
Subsea gate valve actuator with external manual override and drift adjustment |
Mar. 17, 1987 |
| 4625759 |
Gas reclaim back pressure regulator |
Dec. 2, 1986 |
| 4621655 |
Marine riser fill-up valve |
Nov. 11, 1986 |
| 4527582 |
Depth responsive gas control device |
Jul. 9, 1985 |
| 4442835 |
Deep diving breathing systems |
Apr. 17, 1984 |
| 4396032 |
Safety underwater pressure regulator |
Aug. 2, 1983 |
| 4362154 |
Processes and devices for regulating the oxygen partial pressure of the gas mixture of the respiratory circuit of a diver |
Dec. 7, 1982 |
| 4294284 |
Fail-safe, non-pressure locking gate valve |
Oct. 13, 1981 |
| 4230140 |
Environmental first stage scuba regulator |
Oct. 28, 1980 |
| 4229832 |
Diver's suit excess gas exhaust valve |
Oct. 28, 1980 |
| 4226257 |
Scuba regulator |
Oct. 7, 1980 |
| 4204552 |
Dual speed fluid control apparatus |
May. 27, 1980 |
| 4161947 |
Divers exhaust valve |
Jul. 24, 1979 |
| 4157072 |
Combination pressure-vacuum relief and antipollution valve |
Jun. 5, 1979 |
| 4143672 |
Anti-pollution valve for use with shipboard storage tanks |
Mar. 13, 1979 |
| 4095421 |
Subsea energy power supply |
Jun. 20, 1978 |
| 4060076 |
Breathing apparatus incorporating depth compensation |
Nov. 29, 1977 |
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