Resources Contact Us Home
Browse by Category: Main > Engineering
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

  Recently Added Patents
Method and system for automatically identifying wireless signal quality of a region
Hybrid interconnect scheme including aluminum metal line in low-k dielectric
Preservation of liquid foods
Method and apparatus for blind signal extraction
System for providing access to playable media
Substituted bicyclic HCV inhibitors
System and method for detecting an earth ground fault of an external power supply connected to a vehicle
  Randomly Featured Patents
Dock monitoring system
Procalcitonin-based diagnosis of infections or inflammatory diseases of the respiratory tract in a patient with heart failure
Method of producing polyacrylic acid (salt) water-absorbent resin
Apparatus and method for skin lesion examination
Carbapenem compounds, use thereof, and intermediate compounds of the same
Coating apparatus
Method and system for operating a wind energy installation
Electrical capacitance clearanceometer
Method, system, and program for accessing data in different environments