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Class Information
Number: 137/101.27
Name: Fluid handling > Self-proportioning or correlating systems > Self-proportioning flow systems > Liquid level response > Float controlled weir or valve
Description: Subject matter wherein a weir or valve is responsive to the level sensing means.










Patents under this class:

Patent Number Title Of Patent Date Issued
8038889 Cleaning device Oct. 18, 2011
6474361 Floating weir assembly and fluid flow management system comprising same Nov. 5, 2002
6238577 Self-leveling weir May. 29, 2001
6224753 Water catchment device floating at the surface of a basin and supplying a pumping system May. 1, 2001
6131601 Fluid mixing apparatus Oct. 17, 2000
5704389 Waste line stoppage detector and automatic water shutoff system Jan. 6, 1998
5567283 Caustic concentration regulator for chlorine generators Oct. 22, 1996
5213694 Water treatment control system for treating cooling tower makeup water May. 25, 1993
5092377 Bucket and fluid-metering device therefor Mar. 3, 1992
5061450 Isolation fluid control device and water cup Oct. 29, 1991
4742939 Remote soda-circulating beverage dispenser May. 10, 1988
4704140 Procedure and means for use in pumping and volumetry of foodstuff liquids Nov. 3, 1987
4414996 System for automatically dispensing liquid chemicals into an intermittently flowing liquid stream Nov. 15, 1983
4321939 Multi-liquid flow proportioning device Mar. 30, 1982
4312595 Automatic fluid mixing system and a multi compartmented container therefore Jan. 26, 1982
4300489 Pipe closing device Nov. 17, 1981
4289713 Automatic flushing and draining reservoir apparatus for evaporative coolers Sep. 15, 1981
RE30610 Fluid mixing and dispensing system May. 12, 1981
4263932 Accurate dosing of regenerating fluid to processing-fluid-tank in film developing machine Apr. 28, 1981
4255361 Automatic flushing and draining reservoir apparatus for evaporative coolers Mar. 10, 1981
4252142 Apparatus for discontinuously diluting a liquid in another liquid, to a given level of concentration Feb. 24, 1981
4217054 Fluid mixing and dispensing system Aug. 12, 1980
4126103 Control apparatus for automatic removal of milking means Nov. 21, 1978
4116586 Constant fluid level control for machine reservoir Sep. 26, 1978
4103358 Fluid mixing and dispensing system Jul. 25, 1978
4015629 Adjustable flow floating weir assembly Apr. 5, 1977
3935881 Apparatus for steady-state volume rate flow control Feb. 3, 1976











 
 
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