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Class Information
Number: 137/206
Name: Fluid handling > Diverse fluid containing pressure systems > Gas pressure storage over or displacement of liquid
Description: Apparatus wherein a gas under pressure is provided over a body of liquid or is utilized to displace a liquid and a definite coaction exists between the gas and liquid which affects the system.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7264327 |
Pressure regulation by transfer of a calibrated gas volume |
Sep. 4, 2007 |
| 7195035 |
In-tank hydrogen distribution valve |
Mar. 27, 2007 |
| 7044404 |
Pneumatic liquid-delivery device |
May. 16, 2006 |
| 6976497 |
Pressure-differential liquid raising system |
Dec. 20, 2005 |
| 6779548 |
Chemical injection system and method |
Aug. 24, 2004 |
| 6638649 |
Method and article of manufacture to effect an oxygen deficient fuel cell |
Oct. 28, 2003 |
| 6595957 |
Surgical fluid management system with a dampening chamber |
Jul. 22, 2003 |
| 6558823 |
Method and article of manufacture to effect an oxygen deficient fuel cell |
May. 6, 2003 |
| 6481456 |
Liquid treatment apparatus and float valve therefor |
Nov. 19, 2002 |
| 6390340 |
Liquid soap dispenser |
May. 21, 2002 |
| 6167756 |
Pivotal float for liquid level detection apparatus |
Jan. 2, 2001 |
| 6142169 |
Sterile tank venting system for a filling machine |
Nov. 7, 2000 |
| 5485865 |
Air volume control valve for water system pressure tank |
Jan. 23, 1996 |
| 5449016 |
Sewage system |
Sep. 12, 1995 |
| 5344071 |
Expansion tank airation device |
Sep. 6, 1994 |
| 5319172 |
Microwave melting furnace for treating liquid |
Jun. 7, 1994 |
| 5182834 |
Vacuum pump-out control valve for wet/dry vacuum cleaner |
Feb. 2, 1993 |
| 5131424 |
Precision pressure control system |
Jul. 21, 1992 |
| 4867195 |
Vapor pressure control system |
Sep. 19, 1989 |
| 4865802 |
Accumulator |
Sep. 12, 1989 |
| 4805552 |
Apparatus for regulating the flow of gaseous and liquid media |
Feb. 21, 1989 |
| 4733852 |
Gas-liquid separator |
Mar. 29, 1988 |
| 4702755 |
Drip trap |
Oct. 27, 1987 |
| 4589434 |
Method and apparatus to prevent hydrate formation in full wellstream pipelines |
May. 20, 1986 |
| 4585022 |
Arrangement for cleaning fuel with an electrical water level indicating device |
Apr. 29, 1986 |
| 4584176 |
Method and apparatus for storing bicarbonate dialysate |
Apr. 22, 1986 |
| 4526191 |
Fluid supply container for color changer |
Jul. 2, 1985 |
| 4387734 |
Apparatus and method for spontaneous meniscus generation |
Jun. 14, 1983 |
| 4279269 |
Liquid flow control means for gas-liquid receptacle |
Jul. 21, 1981 |
| 4233698 |
Pressure flush tank for toilets |
Nov. 18, 1980 |
| 4223696 |
Apparatus for the purpose of avoiding pressure drop between a gaseous or vaporous phase and a liquid phase |
Sep. 23, 1980 |
| 4204556 |
Self-contained, automatic primer valve for sewer line drain traps |
May. 27, 1980 |
| 4199000 |
Cross-contamination isolator |
Apr. 22, 1980 |
| 4195653 |
Method and apparatus for recovering products of low pumpability |
Apr. 1, 1980 |
| 4193417 |
Fluid check valve device |
Mar. 18, 1980 |
| 4171208 |
Vacuum cleaner including diverter valve |
Oct. 16, 1979 |
| 4020859 |
System for controlling pressure by acoustic means |
May. 3, 1977 |
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