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Class Information
Number: 137/449
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Float arm operated valve > Ball valves
Description: Apparatus in which the valve controlled by the float arm is spherical in shape.










Patents under this class:

Patent Number Title Of Patent Date Issued
7813678 Toner image reproduction machine including a ball valve device having a pressure release assembly Oct. 12, 2010
6810905 Propane overflow protection valve Nov. 2, 2004
6543471 Water heater fail safe apparatus Apr. 8, 2003
6450196 Float valve Sep. 17, 2002
6336469 Domestic hot water service inlet shut off valve triggered by fluid level in overflow tray Jan. 8, 2002
6314989 Device for draining of oil in a component of a vehicle Nov. 13, 2001
6109295 High reliability and efficiency valve with large flow capacity Aug. 29, 2000
6029629 Constant fuel-pump-inlet pressure system Feb. 29, 2000
6015267 Liquid forced-feed apparatus having a working fluid dispersing device Jan. 18, 2000
5937574 Apparatus and method for supplying liquid to a tree stand Aug. 17, 1999
5887609 Container having fluid-weight control device Mar. 30, 1999
5878775 Toilet valve assembly Mar. 9, 1999
5797426 Check valve and trap assembly Aug. 25, 1998
5662138 Drop head structure Sep. 2, 1997
5655232 Fluid level control device and method Aug. 12, 1997
5645105 Tank-filling shut-off valve Jul. 8, 1997
5150732 Boosted differential pressure-type tank valve Sep. 29, 1992
5067517 Quantitative liquid level controlling device Nov. 26, 1991
5035257 Toilet tank valve Jul. 30, 1991
4901754 Valve improvements Feb. 20, 1990
4873832 Liquid level control for a cryogenic fluid Oct. 17, 1989
4860832 Receptacle for extinguishing a burning liquid fuel by isolation Aug. 29, 1989
4842011 Flushing means Jun. 27, 1989
4655244 Float operated valve Apr. 7, 1987
4637426 Fill control valve Jan. 20, 1987
4635672 Air vent Jan. 13, 1987
4606365 Buoyant blood stop valve Aug. 19, 1986
4493337 Device on a valve for shutting off and/or controlling a flow of liquid Jan. 15, 1985
4462417 Valve assembly Jul. 31, 1984
4461453 Valve for fluid systems Jul. 24, 1984
4444230 Tank-mounted filling device Apr. 24, 1984
4341238 Flushing means Jul. 27, 1982
4305422 Filler valve for a gas tank Dec. 15, 1981
4295488 Diaphragm and ball valve Oct. 20, 1981
4192341 Drain trap valve mechanism Mar. 11, 1980
4046161 Non-return valve for preventing back flow of waste waters Sep. 6, 1977











 
 
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