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Class Information
Number: 137/414
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Servo relay operation of control > Fluid pressure > Flexible diaphragm valve
Description: Apparatus in which the flow control means is a valve comprising a flexible diaphragm.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8580013 Air dryer cartridge and method for operating an air dryer cartridge Nov. 12, 2013
8387652 Water saver fill valve and assembly Mar. 5, 2013
8276610 Toilet cistern inlet valve Oct. 2, 2012
7997297 System and method for performing a chemical experiment Aug. 16, 2011
7647938 Readily demountable fill valve Jan. 19, 2010
7412988 Pneumatic level control Aug. 19, 2008
7325565 Backflow valve Feb. 5, 2008
7284567 Liquid level controller Oct. 23, 2007
7028704 Fill valve Apr. 18, 2006
6901951 Valve Jun. 7, 2005
6886580 Frost proof valve May. 3, 2005
6837263 Liquid level control system Jan. 4, 2005
6810904 Lavatory flush tank silent-operating fill device Nov. 2, 2004
6766825 Top-loaded replaceable flow control and particulate strainer Jul. 27, 2004
6755209 Fill valve assembly for a flush tank Jun. 29, 2004
6712090 Hydraulic valve Mar. 30, 2004
6679285 Faucet for filling tanks Jan. 20, 2004
6659125 Height-adjustable tank valve Dec. 9, 2003
6595236 Valve Jul. 22, 2003
6588449 Diesel fuel shut-off device Jul. 8, 2003
6510866 Ball cock assembly, float assembly for same, and method of controlling liquid level in a tank Jan. 28, 2003
6478044 Snap-action piloted fill valve Nov. 12, 2002
6450195 Toilet tank fill valve with float Sep. 17, 2002
6450196 Float valve Sep. 17, 2002
6408869 Safety valve Jun. 25, 2002
6354326 Toilet fill valve with improved noise abatement Mar. 12, 2002
6332475 Filling stop valve Dec. 25, 2001
6325095 Multi-point float valve Dec. 4, 2001
6260574 Toilet tank fill valve connectable to riser with pre-selected height Jul. 17, 2001
6244292 Ballcock valve for water tanks Jun. 12, 2001
6240955 Liquid level controller Jun. 5, 2001
6164313 Low-high flow rate valve Dec. 26, 2000
6142174 Fill valve float arm connection Nov. 7, 2000
6079438 Valve device for controlling the filling level of cylinders and the like with liquefied gases Jun. 27, 2000
6047725 Adjustable height fill valve Apr. 11, 2000
6003541 Unitary float and arm for float operated valve Dec. 21, 1999
5992448 Liquid level controller Nov. 30, 1999
5964247 Fill valve Oct. 12, 1999
5937574 Apparatus and method for supplying liquid to a tree stand Aug. 17, 1999
5921272 Floater device for checking the liquefied gas filling level of cylinders or the like Jul. 13, 1999
5904176 Silent valve ball cock assembly May. 18, 1999
5887609 Container having fluid-weight control device Mar. 30, 1999
5887613 Device for the regulation of a constant outflow from a liquid container Mar. 30, 1999
5842498 Mounting adapter and assembly for rendering fill valves for tank-type instantly dismountable Dec. 1, 1998
5839466 Automatic watering device Nov. 24, 1998
5836346 Pilot operated diaphragm fill valve Nov. 17, 1998
5829465 Container having fluid-weight control device Nov. 3, 1998
5743290 Multi-purpose automatic filling and leveling liquid basin with liquid transfer Apr. 28, 1998
5742950 Apparatus for pressure assisted flush toilets Apr. 28, 1998
5738141 WC-cistern filling valve Apr. 14, 1998

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