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Class Information
Number: 137/62
Name: Fluid handling > Freeze condition responsive safety systems > Low temperature responsive drains
Description: Apparatus which operates to open an outlet so that at least part of the system is drained or emptied of liquid in response to the sensing of low temperature or freezing conditions.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8689813 Valve for prevention of frozen break using phase change material Apr. 8, 2014
8561914 Temperature-responsive fluid flow control apparatus Oct. 22, 2013
8490885 Integrated freeze protection and pressure relief valve Jul. 23, 2013
8443849 Apparatus and method for draining irrigation systems May. 21, 2013
8439062 Flood preventing system, and method of use May. 14, 2013
8424550 Fluid drainage system and methods Apr. 23, 2013
8327867 Antifreezing valve device for hydraulic and/or water storage systems Dec. 11, 2012
8141584 Water collection, storage, and distribution system Mar. 27, 2012
7970494 Systems and methods for monitoring relief valve drain in hot water Heater Jun. 28, 2011
7654280 Anti-freezing hydrant Feb. 2, 2010
7407113 Products and process that act as a safety valve to prevent scalding Aug. 5, 2008
7377286 Drain valve May. 27, 2008
6918402 Flow control apparatus Jul. 19, 2005
6892747 Temperature actuated valve May. 17, 2005
6883534 Freeze protection device for wall hydrants/faucets Apr. 26, 2005
6857442 Freeze protection device for wall hydrants/faucets Feb. 22, 2005
6830063 Freezeless protection device for wall hydrants/faucets Dec. 14, 2004
6805154 Freeze protection device for wall hydrants/faucets Oct. 19, 2004
6805150 Supply device for snow gun Oct. 19, 2004
6782908 Automotive washer system utilizing a freezable washer liquid and a freeze-resistant washer liquid Aug. 31, 2004
6722386 Flow control apparatus and method Apr. 20, 2004
6626202 Flow control apparatus and method Sep. 30, 2003
6532986 Freeze protection device for wall hydrants/faucets Mar. 18, 2003
6530391 Temperature activated valve Mar. 11, 2003
6439260 Easy to use residential water supply system for preventing winter flood damage Aug. 27, 2002
6427712 Ambient temperature shape memory alloy actuator Aug. 6, 2002
6374848 Automatic mechanism for cut-off and drainage of under low-freezing ambient temperature conditions Apr. 23, 2002
6374849 Test cock apparatus with freeze protection capability Apr. 23, 2002
6363960 Frost protection device Apr. 2, 2002
6196246 Freeze-resistant plumbing system in combination with a backflow preventer Mar. 6, 2001
6145531 Temperature sensitive valve device Nov. 14, 2000
6125873 Temperature sensing flow control device Oct. 3, 2000
6121588 Thermal actuation device Sep. 19, 2000
6050230 Locomotive engine cooling system drain valve with low voltage sensor Apr. 18, 2000
6029686 Thermally responsive valve Feb. 29, 2000
6021798 Apparatus for preventing freezing of interior water pipes Feb. 8, 2000
6003538 Drain valve Dec. 21, 1999
5785073 Pipe burst protection pressure relief apparatus for sliding plate plumbing fixtures Jul. 28, 1998
5785072 Compressed stopper channel bypass pipe burst pressure relief apparatus for plumbing fixtures Jul. 28, 1998
5715855 Temperature-activated valve Feb. 10, 1998
5692535 Icing preventer with temperature adjustment washer Dec. 2, 1997
5628285 Drain valve for a marine engine May. 13, 1997
5318059 Methods and apparatus for prevention of water pipe freeze-up in a dwelling Jun. 7, 1994
5287876 Water piping system Feb. 22, 1994
5275192 Freeze control valve Jan. 4, 1994
5220937 Freeze buster Jun. 22, 1993
5209078 Vacuum fluid cooling apparatus May. 11, 1993
5139044 Fluid control system Aug. 18, 1992
5113892 Freeze control and drain valve May. 19, 1992
5055185 Anti-freeze separator assembly Oct. 8, 1991

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