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Class Information
Number: 251/234
Name: Valves and valve actuation > Mechanical movement actuator > Lever > Adjustable leverage
Description: Subject matter wherein means are provided for adjusting the fulcrum of the lever or the length of the lever with relation to the fulcrum and/or valve, the adjustment being made during non-operative periods and not being affected by the valve actuating operation.

Patents under this class:

Patent Number Title Of Patent Date Issued
7997459 Metering valves for dispensers Aug. 16, 2011
7255326 Single-and-continual shot changeover device for a nailing gun Aug. 14, 2007
6871833 Disc drive shocking station with high speed spool valve actuation Mar. 29, 2005
6832636 Fuel nozzle lever, a fuel nozzle and a method of operating a fuel nozzle Dec. 21, 2004
6550435 Variable valve timing adjustable finger follower assembly Apr. 22, 2003
6439538 Pressure variable valve apparatus and set pressure detecting apparatus of the valve apparatus Aug. 27, 2002
6391019 Valve apparatus and valve system using thereof May. 21, 2002
6086038 Linkage locking device Jul. 11, 2000
5772181 Pivoting valve assembly Jun. 30, 1998
5560389 Pressure reducing valve device for a vehicle Oct. 1, 1996
5549138 Changeover valve system Aug. 27, 1996
5525301 Automated sample extractor or feeder/inoculator for bioreactors and similar equipment Jun. 11, 1996
5040769 Cold-weather fuel nozzle attachment Aug. 20, 1991
4573661 Multiple schedule valve Mar. 4, 1986
4431369 Governor control linkage assembly for overspeed protection of turbines during restarting Feb. 14, 1984
4348917 Control mechanism with adjustable floating cam Sep. 14, 1982
4319714 Device for setting a valve Mar. 16, 1982
4258868 Limit stop for controlling stopper rod travel in a bottom pour ladle Mar. 31, 1981
4180243 Automatic and manual linear reversion control mechanism Dec. 25, 1979
3987813 Presettable valve actuator Oct. 26, 1976
3973577 Fluid control valves Aug. 10, 1976
3938935 Control systems for gaseous fuel fired appliances Feb. 17, 1976

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