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Class Information
Number: 137/435
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Float arm operated valve > With valve retarder or cushion means
Description: Apparatus which includes in addition to the float mechanism, means to retard or cushion the rate of closing or opening of the flow controlling valve.

Patents under this class:

Patent Number Title Of Patent Date Issued
8360093 Pilot fill valve Jan. 29, 2013
6666229 Noise reducing housing for toilet tank fill valve Dec. 23, 2003
6370708 Toilet tank anti-refill device Apr. 16, 2002
5836346 Pilot operated diaphragm fill valve Nov. 17, 1998
5772928 Needle and seat valve assembly Jun. 30, 1998
5156197 Float type liquid level meter Oct. 20, 1992
5141644 Buoyed flapper valve Aug. 25, 1992
5072751 Valve assembly Dec. 17, 1991
4628956 Float valve mechanism Dec. 16, 1986
4453563 Non-chattering float controlled pilot operated diaphragm valve Jun. 12, 1984
4399835 Water saving toilet control valve Aug. 23, 1983
4110849 Apparatus and method for conserving water Sep. 5, 1978

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