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Class Information
Number: 137/81.1
Name: Fluid handling > Ambient condition change responsive > Atmospheric > Pressure
Description: Apparatus in which a fluid flow is controlled in response to variations of atmospheric pressure.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7398794 |
First stage pressure reducing valve having a tubular plug, particularly for regulators of scuba breathing apparatus |
Jul. 15, 2008 |
| 7341072 |
Oxygen supply system having a central flow control unit |
Mar. 11, 2008 |
| 7299817 |
Passive, double acting, vacuum actuated vent valve |
Nov. 27, 2007 |
| 7209806 |
Self-contained electronic pressure monitoring and shutdown device |
Apr. 24, 2007 |
| 7143781 |
Flexible bladder apparatus for fluid flow control |
Dec. 5, 2006 |
| 6945278 |
Fully integrated aircraft cabin pressure control system valve |
Sep. 20, 2005 |
| 6708708 |
Pneumatic actuation control system and method of operation |
Mar. 23, 2004 |
| 6550495 |
Safety device for cutting off gas pipelines |
Apr. 22, 2003 |
| 6518918 |
Wireless assisted altitude measurement |
Feb. 11, 2003 |
| 6267131 |
Method of controlling pressure in a chamber, apparatus for the same, and exposure apparatus |
Jul. 31, 2001 |
| 6021519 |
Device for protecting against accelerations |
Feb. 8, 2000 |
| 5979481 |
Apparatus and method for vapor reduction for a fuel storage tank |
Nov. 9, 1999 |
| 5947144 |
Diaphragm actuated absolute pressure regulator |
Sep. 7, 1999 |
| 5865308 |
System, method and device for controllably releasing a product |
Feb. 2, 1999 |
| 5357949 |
Breathing protection installation for aircraft passengers |
Oct. 25, 1994 |
| 5351682 |
Breathing demand regulations |
Oct. 4, 1994 |
| 5199426 |
Aircraft aircrew G-responsive valve system for controlling breathing gas and suit-inflation |
Apr. 6, 1993 |
| 5170814 |
High altitude G-valve |
Dec. 15, 1992 |
| 5062441 |
Drain valve used in aircraft |
Nov. 5, 1991 |
| 4991392 |
Altitude-sensitive fuel flow control device |
Feb. 12, 1991 |
| 4903573 |
Explosion suppression system and composition for use therein |
Feb. 27, 1990 |
| 4903721 |
Fuel pressure regulator |
Feb. 27, 1990 |
| 4899740 |
Respirator system for use with a hood or face mask |
Feb. 13, 1990 |
| 4827964 |
System for metering of breathing gas for accommodation of breathing demand |
May. 9, 1989 |
| 4805658 |
Variable pressure regulating valve |
Feb. 21, 1989 |
| 4715561 |
Drain assembly for aircraft |
Dec. 29, 1987 |
| 4703625 |
Turbocharger control system |
Nov. 3, 1987 |
| 4687013 |
Flueric partial pressure sensor |
Aug. 18, 1987 |
| 4651764 |
Apparatus responsive to entry into space and method of operation thereof |
Mar. 24, 1987 |
| 4648397 |
Electronically compensated pressure dilution demand regulator |
Mar. 10, 1987 |
| 4622815 |
Pressure regulator |
Nov. 18, 1986 |
| 4619286 |
Elevation responsive automatic vehicle control system |
Oct. 28, 1986 |
| 4567909 |
Oxygen partial pressure controller for a pressure swing adsorption system |
Feb. 4, 1986 |
| 4506851 |
Drain apparatus for aircraft |
Mar. 26, 1985 |
| 4499914 |
Selector valve for an aircraft on board oxygen generation system with high pressure oxygen backup |
Feb. 19, 1985 |
| 4463774 |
Fuselage-mounted valve for condensate drainage and cabin-air pressurization |
Aug. 7, 1984 |
| 4462301 |
Bourdon tube actuator |
Jul. 31, 1984 |
| 4391290 |
Altitude sensing control apparatus for a gas turbine engine |
Jul. 5, 1983 |
| 4338265 |
Altitude compensation device |
Jul. 6, 1982 |
| 4335735 |
Automatic diluter/demand oxygen regulator adapted for chemical or biological use |
Jun. 22, 1982 |
| 4332268 |
Atmospheric pressure compensation device |
Jun. 1, 1982 |
| 4276237 |
Carburetor air control device |
Jun. 30, 1981 |
| 4219039 |
Multivariable anti-G valve |
Aug. 26, 1980 |
| 4188337 |
Nitrile substituted polyimide precursors |
Feb. 12, 1980 |
| 4183372 |
Altitude compensation valve assembly |
Jan. 15, 1980 |
| 4164896 |
Control alternating system |
Aug. 21, 1979 |
| 4148311 |
Gas mixing apparatus |
Apr. 10, 1979 |
| 4130051 |
Pneumatic autoschedule cabin pressure controller |
Dec. 19, 1978 |
| 4127129 |
Oxygen regulator |
Nov. 28, 1978 |
| 4121578 |
Physiological responsive control for an oxygen regulator |
Oct. 24, 1978 |
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