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Class Information
Number: 137/247.51
Name: Fluid handling > With liquid valves or liquid trap seals > Liquid seal in liquid flow line; flow liquid forms seal > U-seals > Even diameter legs > Access opening
Description: Seals having access means.

Patents under this class:

Patent Number Title Of Patent Date Issued
8602051 Trap-primer system for floor drains Dec. 10, 2013
7806955 Gas-liquid separation system and method thereof Oct. 5, 2010
7799216 Drain trap with strainer and cup Sep. 21, 2010
7531088 Drain trap with strainer and cup May. 12, 2009
7082628 Disposable solid waste detainment plumbing trap Aug. 1, 2006
7066195 Two-way trap Jun. 27, 2006
6915814 Transparent pipe trap with means of enhancing the biodegradation of sink effluents Jul. 12, 2005
6698225 Biased condensation trap Mar. 2, 2004
6049922 Solid-sediment retainment plumbing trap Apr. 18, 2000
5791401 Heat recovery device for showers Aug. 11, 1998
5678598 Cover assembly and method for covering undersink piping Oct. 21, 1997
5638557 Sink trap with valuables capture vessel Jun. 17, 1997
5267361 Drain trap Dec. 7, 1993
5259410 System for P-trap protection Nov. 9, 1993
5236137 Apparatus and method for garbage disposal cleaning Aug. 17, 1993
5163469 Unitary article comprising protective system components Nov. 17, 1992
5075905 Drain trap assembly Dec. 31, 1991
5054513 Protective system for P-trap Oct. 8, 1991
5038816 Drain pipe trap Aug. 13, 1991
4700412 Universal trap Oct. 20, 1987
4597404 Plumbing fixture Jul. 1, 1986
4594740 Sink trap assembly Jun. 17, 1986
D280925 Floor drain Oct. 8, 1985
4371991 Clean-out tool for sinks and the like Feb. 8, 1983
4301554 Drain trap Nov. 24, 1981
4230582 Drain traps with strainer means Oct. 28, 1980
4179762 Trap and solids removal assembly for drains Dec. 25, 1979
4032455 Traps for sinks, laundry tubs and the like Jun. 28, 1977
4031914 Sink trap with clean out opening Jun. 28, 1977

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