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Class Information
Number: 251/227
Name: Valves and valve actuation > Mechanical movement actuator > Plural motions of valve > Biased > Spring
Description: Devices in which the biasing means is a spring.

Patents under this class:

Patent Number Title Of Patent Date Issued
8602058 Pushbutton stopcock assembly Dec. 10, 2013
8596560 Check valve Dec. 3, 2013
8443983 Separator device May. 21, 2013
8418720 Water diverting device Apr. 16, 2013
8403297 Switch for kitchen and bath appliances Mar. 26, 2013
7802424 Exhaust device in combustion engine, and motorcycle therewith Sep. 28, 2010
7779861 Device for adjusting the flow-rate of a fluid, particularly medical oxygen and compressed gases in general Aug. 24, 2010
7726492 Separator device Jun. 1, 2010
7487789 Gaseous fluid metering valve Feb. 10, 2009
7086636 Gaseous fluid metering valve Aug. 8, 2006
6997434 Twist cam valve Feb. 14, 2006
6978979 Isolating device Dec. 27, 2005
6613096 Prosthetic pressure relief valve system Sep. 2, 2003
6540212 Carburetor valve rotational setting retainer assembly Apr. 1, 2003
6488264 Governor valve device in a pressure fluid operated tool Dec. 3, 2002
6402124 Carburetor fuel mixture adjustment assembly Jun. 11, 2002
6003845 Fuel mixture adjusting and limiting device Dec. 21, 1999
5727507 Valve rotation arrangement Mar. 17, 1998
5570663 Valve rotator Nov. 5, 1996
5249773 Fluid flow regulating valve Oct. 5, 1993
5195719 Butterfly valves with actuators carried on valve plate Mar. 23, 1993
4770392 Shut-off device for pipes Sep. 13, 1988
4568499 Carburetor with self seating needle valve Feb. 4, 1986
4058237 Portable self-protective device Nov. 15, 1977
3988001 Variable flow control valve for use with dental syringes and the like Oct. 26, 1976

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