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Class Information
Number: 137/247.35
Name: Fluid handling > With liquid valves or liquid trap seals > Liquid seal in liquid flow line; flow liquid forms seal > Submerged inlet pipe end
Description: Seals comprising a chamber having a distinct inlet pipe projecting thereinto and an outlet at a higher lever than the inlet pipe end opening.










Sub-classes under this class:

Class Number Class Name Patents
137/247.39 Distinct seal bowl in flow line connected casing 14
137/247.37 Hinged seal bowl 1


Patents under this class:

Patent Number Title Of Patent Date Issued
7490624 Passive pressure activation valve Feb. 17, 2009
7155760 Waste trap Jan. 2, 2007
6973938 Liquid column pressure and vacuum vent Dec. 13, 2005
6701541 Odor trap for a waterless urinal Mar. 9, 2004
6192915 Sewerage inlet Feb. 27, 2001
5941273 Drain trap apparatus Aug. 24, 1999
5159724 Spill free clean out traps Nov. 3, 1992
5095553 Spill free clean out trap Mar. 17, 1992
4681131 Liquid closing device Jul. 21, 1987
4655242 Water seal drum Apr. 7, 1987
4594740 Sink trap assembly Jun. 17, 1986
4432384 Sewer fluid trap Feb. 21, 1984
4275760 Trap-type drain with built-in strainer Jun. 30, 1981
4212314 Waste water outlet sanitary plant comprising a siphon Jul. 15, 1980
4158897 Siphon Jun. 26, 1979
4051859 Apparatus for draining fluid from a continuously evacuated space Oct. 4, 1977











 
 
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