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Class Information
Number: 137/247.29
Name: Fluid handling > With liquid valves or liquid trap seals > Liquid seal in liquid flow line; flow liquid forms seal > Divided and recombined passages
Description: Devices having divided and recombined passage means for flow liquid and/or air, for preventing seal loss by forward siphonage.

Patents under this class:

Patent Number Title Of Patent Date Issued
8646117 Anti-siphon trap with snorkel Feb. 11, 2014
8485216 Flow trap with compartment separator and baffle for use in a water-free urinal Jul. 16, 2013
7575022 Diverter, liquid-level indicator and chemical pre-treatment and post-treatment implementations useful in waterless urinals Aug. 18, 2009
7571741 Flow trap with compartment separator and baffle for use in a waterless urinal Aug. 11, 2009
7066195 Two-way trap Jun. 27, 2006
5404597 Vacuum assist toilet trap Apr. 11, 1995
4706700 Valve arrangement Nov. 17, 1987
D280925 Floor drain Oct. 8, 1985
4254512 Water trap Mar. 10, 1981

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