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Class Information
Number: 137/637.3
Name: Fluid handling > Systems > Valves with separate, correlated, actuators > Coaxial stems > Rotary
Description: Subject matter in which at least one of the coaxial stem valves pivots about a fixed axis to open or close a fluid path or paths (e.g., plug valves, butterfly valves, etc.).










Sub-classes under this class:

Class Number Class Name Patents
137/637.4 And reciprocating 25
137/637.5 Concentric, central valve removable 6


Patents under this class:

Patent Number Title Of Patent Date Issued
8631812 Compressor throttling valve assembly Jan. 21, 2014
8555923 Valve assembly Oct. 15, 2013
8387660 Split flow valve arrangement Mar. 5, 2013
8281814 Water supply valve cartridge Oct. 9, 2012
8109297 Valve arrangement for use with a water meter Feb. 7, 2012
7841362 Water control valve Nov. 30, 2010
7699076 Valve assembly Apr. 20, 2010
7302969 Valve device for use with fuel cells Dec. 4, 2007
7267139 Valve device Sep. 11, 2007
7174916 Flow and temperature separation control valve Feb. 13, 2007
7143786 Two-handle flow-through valve Dec. 5, 2006
7140392 Valve device Nov. 28, 2006
6640357 Back-to-back faucet valve structures Nov. 4, 2003
6484755 Blend door actuation for dual zone Nov. 26, 2002
6257279 Plural function fluid valve and method Jul. 10, 2001
6223774 Redundant regulation valve May. 1, 2001
5845674 Flow- and temperature-control valve Dec. 8, 1998
5794647 Valve system Aug. 18, 1998
5779535 Heating and/or air-conditioning system for a motor vehicle Jul. 14, 1998
5647399 Flow control device Jul. 15, 1997
5285536 Wave generating system Feb. 15, 1994
5255706 High-pressure ball valve with internal pressure equalization Oct. 26, 1993
5247964 Valve with redundancy on closing Sep. 28, 1993
5168900 Compressor double plate inlet valve Dec. 8, 1992
5129576 Thermostatic pressure balanced valve assembly Jul. 14, 1992
5036816 Load adjustment device Aug. 6, 1991
4981156 Temperature and volume control valve assembly Jan. 1, 1991
4977917 Modular differential pressure transmitter/manifold for a fluid conveying pipeline Dec. 18, 1990
4921598 Selector valve, especially a central control valve for a water treatment device May. 1, 1990
4901750 Temperature and volume control valve assembly Feb. 20, 1990
4682728 Method and apparatus for controlling the temperature and flow rate of a fluid Jul. 28, 1987
4516607 Faucet mixer May. 14, 1985
4397329 Mixing valve Aug. 9, 1983
4306582 Mixing valve Dec. 22, 1981
4222413 Shut-off valve Sep. 16, 1980
3987819 Mixing valve system Oct. 26, 1976
3934851 Butterfly valve having a split vane Jan. 27, 1976











 
 
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