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Class Information
Number: 137/877
Name: Fluid handling > Systems > With flow control means for branched passages > Biased valve
Description: System in which at least one of the flow passages is provided with a fluent material flow control means which is urged by a spring, gravity, or fluid pressure means either toward or away from its seat.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7610936 |
Flow based pressure isolation mechanism for a fluid delivery system |
Nov. 3, 2009 |
| 7252117 |
Reusable stub-out cover |
Aug. 7, 2007 |
| 6766829 |
Valve assembly for gas cylinder |
Jul. 27, 2004 |
| 6341624 |
Valve for cryogenic fluid |
Jan. 29, 2002 |
| 5640997 |
Relief valve for gas flow rate regulator |
Jun. 24, 1997 |
| 5365975 |
Constant air pressure unit for air handling system |
Nov. 22, 1994 |
| 4998562 |
Flow control valve |
Mar. 12, 1991 |
| 4913260 |
Gas silencing system with controlling sound attenuation |
Apr. 3, 1990 |
| 4749005 |
Combined gas pressure regulator and shut off valve |
Jun. 7, 1988 |
| 4744391 |
Flow control valve |
May. 17, 1988 |
| 4700748 |
Pressure-referenced programmed flow control in a hydraulic valve |
Oct. 20, 1987 |
| 4692253 |
Method and apparatus for removing extraneous matters |
Sep. 8, 1987 |
| 4690171 |
Valve assembly for a sphygmomanometer |
Sep. 1, 1987 |
| 4664155 |
Apparatus for centralized pressurization and depressurization of aircraft hydraulic reservoirs |
May. 12, 1987 |
| 4585623 |
Device for performing quantitative chemical and immunochemical assays |
Apr. 29, 1986 |
| 4516594 |
Multi-part valve with a valve seat skeleton and cast valve body |
May. 14, 1985 |
| 4489757 |
Electrically actuated servocontrol system for a static pressure operated load |
Dec. 25, 1984 |
| 4391321 |
Heat exchanger in plants for ventilating rooms or buildings |
Jul. 5, 1983 |
| 4353243 |
Flexible diaphragm controlled valve |
Oct. 12, 1982 |
| 4272021 |
Pipeline drain apparatus |
Jun. 9, 1981 |
| 4195777 |
Hot water heating system |
Apr. 1, 1980 |
| 4172471 |
Valve unit |
Oct. 30, 1979 |
| 4134428 |
Non-drip valve |
Jan. 16, 1979 |
| 4100940 |
Trickle emitter for subterranean irrigation |
Jul. 18, 1978 |
| 4073312 |
Charge and relief valve |
Feb. 14, 1978 |
| 4011662 |
Automatic valve assembly and heater/humidifier converter for clothes dryer |
Mar. 15, 1977 |
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