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Class Information
Number: 137/115.05
Name: Fluid handling > Self-proportioning or correlating systems > Self-controlled branched flow systems > Bypass or relief controlled by main line fluid condition > Flow rate responsive > Including controlling main line flow > Relief or bypass closes as main opens
Description: Subject matter wherein the sensor, in response to the change in the flow rate, is simultaneously opening a main line valve and closing a relief valve in a branch line or vice versa.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7243672 |
Flow control valve |
Jul. 17, 2007 |
| 7216662 |
Flow control apparatus |
May. 15, 2007 |
| 7063100 |
Flow regulator with pressure relief combination valve |
Jun. 20, 2006 |
| 6966365 |
Outflow prevention device |
Nov. 22, 2005 |
| 6966329 |
Proportional pilot-operated flow control valve |
Nov. 22, 2005 |
| 6874503 |
Fluid flow regulation system |
Apr. 5, 2005 |
| 6679949 |
Method and device to allow a rigid pig to pass into a flow pipe which requires the use of a hollow flow-constricting device |
Jan. 20, 2004 |
| 6675110 |
Testing valve assemblies |
Jan. 6, 2004 |
| 6607043 |
Down hole motors and methods for their operation |
Aug. 19, 2003 |
| 6595233 |
Safety device for a fluid transmission |
Jul. 22, 2003 |
| 6334458 |
By-pass valve in particular for pressure-washing machines |
Jan. 1, 2002 |
| 6058962 |
Flow rate regulating valve of hydraulic pump |
May. 9, 2000 |
| 6041807 |
Flow control device of power steering apparatus |
Mar. 28, 2000 |
| 5832949 |
Control valve |
Nov. 10, 1998 |
| 5775360 |
Pressure control valve |
Jul. 7, 1998 |
| 5718255 |
Flow-responsive diverting valve |
Feb. 17, 1998 |
| 5172716 |
Recirculation valve |
Dec. 22, 1992 |
| 4967783 |
Recirculation valve with pilot valve |
Nov. 6, 1990 |
| 4941502 |
Low pressure recirculation valve |
Jul. 17, 1990 |
| 4779639 |
Automatic recirculation valve |
Oct. 25, 1988 |
| 4638831 |
Valve arrangement for unloading liquid flow at a non-return valve |
Jan. 27, 1987 |
| 4570667 |
Demand responsive flow regulator valve |
Feb. 18, 1986 |
| 4442857 |
Flow control valve |
Apr. 17, 1984 |
| 4418710 |
Pilot control valve for load sensing hydraulic system |
Dec. 6, 1983 |
| 4385640 |
Hydraulic unloader |
May. 31, 1983 |
| 4311161 |
Valve system in power steering systems |
Jan. 19, 1982 |
| 4265268 |
Modulating flow control valve assembly |
May. 5, 1981 |
| 4265267 |
Flow control device for use with positive displacement pump |
May. 5, 1981 |
| 4244389 |
Flow control valve |
Jan. 13, 1981 |
| 4243064 |
Bypass valve for pumps, heating systems and the like |
Jan. 6, 1981 |
| 4121610 |
Electrically operated proportional flow control hydraulic valve and manually operable remote control device therefor |
Oct. 24, 1978 |
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