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Class Information
Number: 137/247.45
Name: Fluid handling > With liquid valves or liquid trap seals > Liquid seal in liquid flow line; flow liquid forms seal > U-seals > Enlarged upflow leg
Description: Seals wherein the upflow leg or a portion thereof ahead of the overflow into the outlet is transversely larger than the downflow (inlet) leg.

Sub-classes under this class:

Class Number Class Name Patents
137/247.47 Topside access opening 1

Patents under this class:

Patent Number Title Of Patent Date Issued
7120949 Multi-purpose drain Oct. 17, 2006
7082628 Disposable solid waste detainment plumbing trap Aug. 1, 2006
6845527 In-the-wall plumbing trap with integral waste and vent line Jan. 25, 2005
6049922 Solid-sediment retainment plumbing trap Apr. 18, 2000
5159724 Spill free clean out traps Nov. 3, 1992
4800914 Gas pressure relief apparatus Jan. 31, 1989
4726392 Drainage canal Feb. 23, 1988
4487219 Floor drain or some other cupped water seal Dec. 11, 1984
4352368 Plumbing apparatus Oct. 5, 1982
4263138 Trap-type drain fitting Apr. 21, 1981
4248711 Basement floor drain and integral trap Feb. 3, 1981

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