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Class Information
Number: 251/262
Name: Valves and valve actuation > Mechanical movement actuator > Cam > Biased
Description: Devices in which the valve has one position which it will maintain under the influence of a spring or weight which comprises a biasing means.

Sub-classes under this class:

Class Number Class Name Patents
251/263 Spring 172

Patents under this class:

Patent Number Title Of Patent Date Issued
7610933 Two part valve body for a water treatment system Nov. 3, 2009
7418976 Method and apparatus for pneumatic regulation including a high-pressure reserve Sep. 2, 2008
7140337 Valve gear mechanism Nov. 28, 2006
7093615 Water saving faucet valve Aug. 22, 2006
6860414 Filling head Mar. 1, 2005
6454243 Springless seat cup Sep. 24, 2002
5966076 Fluid leak detector and shut-off device Oct. 12, 1999
5881930 Valve of a water dispenser for a refrigerator Mar. 16, 1999
5845851 Irrigation hose nozzle Dec. 8, 1998
5626569 Device for venting and controlling the pressure inside a stoma collection bag May. 6, 1997
5620015 Flush valve Apr. 15, 1997
5411680 Carburetor May. 2, 1995
5273255 Quarter turn tap Dec. 28, 1993
4784325 Rotating stream sprinkler Nov. 15, 1988
4721133 Multiple use valving device Jan. 26, 1988
4605200 Faucet valve Aug. 12, 1986
4537221 Hydraulic control devices for use with mining apparatus Aug. 27, 1985

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