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Class Information
Number: 137/60
Name: Fluid handling > Freeze condition responsive safety systems > With freeze waste
Description: Apparatus which includes means to protect the liquid from freezing by responding to the freezing of the liquid in a chamber.

Patents under this class:

Patent Number Title Of Patent Date Issued
8578959 Rinse valve for vacuum waste system Nov. 12, 2013
8307848 Freeze resistant manifold assembly and system Nov. 13, 2012
8109264 Hot water solar heating system and method Feb. 7, 2012
7654280 Anti-freezing hydrant Feb. 2, 2010
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
6769446 Freeze protection device for wall hydrants/faucets Aug. 3, 2004
6532986 Freeze protection device for wall hydrants/faucets Mar. 18, 2003
6363960 Frost protection device Apr. 2, 2002
5797416 Faucet and water pipe freeze-protection device Aug. 25, 1998
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
5113891 Water freeze guard valve May. 19, 1992
5055185 Anti-freeze separator assembly Oct. 8, 1991
4967780 Anti-freezing device Nov. 6, 1990
4968456 Electrical air freshener for automobiles Nov. 6, 1990
4815491 Freeze protection device Mar. 28, 1989
4784173 Water freeze prevention valve Nov. 15, 1988
4437481 Self-actuating drip valve Mar. 20, 1984

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