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Class Information
Number: 4/387
Name: Baths, closets, sinks, and spittoons > Flush closet > Tank only > With outlet valve > With delay of valve closing > By flow-responsive element in valve outlet
Description: Subject matter wherein a flow actuated element in the valve outlet prevents the valve from closing until the flow has stopped or decreased below a predetermined valve.

Patents under this class:

Patent Number Title Of Patent Date Issued
8650724 Zippers for bags and luggage Feb. 18, 2014
8250681 Variable buoyancy setting flapper Aug. 28, 2012
8074303 Noise reducing valve for toilet systems Dec. 13, 2011
7476368 Method and device for deactivating items and for maintaining such items in a deactivated state Jan. 13, 2009
5179739 Water conserving toilet assembly Jan. 19, 1993
4811432 Flush tank water saver Mar. 14, 1989
4571753 Toilet-tank discharge valve Feb. 25, 1986
4357720 Flush valve mounting for toilets Nov. 9, 1982
4275471 Hydraulically operated flush valve for toilet flush tanks and similar devices Jun. 30, 1981
4115883 Diaphragm activated toilet Sep. 26, 1978
4106136 Toilet flush flow accelerator Aug. 15, 1978
3973751 Siphon with pressure priming and pneumatic reflux Aug. 10, 1976

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