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Class Information
Number: 137/423
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Plural floats
Description: Apparatus which includes a plurality of floats.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8689821 Air release valve Apr. 8, 2014
8646495 Fuel tank for motor vehicles with filling level limiting device Feb. 11, 2014
8590560 Opening/closing device Nov. 26, 2013
8578961 Low profile backwater valve Nov. 12, 2013
8443832 Sequencer assembly, system and method May. 21, 2013
8424557 Downspout water diversion and overflow device and water collection and overflow system employing the same Apr. 23, 2013
8347909 Float valve system for a respiratory humidification system Jan. 8, 2013
8113231 Device for controlling water level Feb. 14, 2012
8066100 Oil pan and lubricating device Nov. 29, 2011
8033292 Heated humidified chamber with autofeed mechanism Oct. 11, 2011
7661438 Water saver fill valve and assembly Feb. 16, 2010
7614420 Autofeed mechanism for heated humidifier chamber Nov. 10, 2009
7584939 Surge flushing device for wastewater channels and the like Sep. 8, 2009
7040343 Valve assembly with low gas level signaling and controlling function May. 9, 2006
6962163 Dual-float snap-action flush valve Nov. 8, 2005
6886588 Buoyancy flushing apparatus and method thereof May. 3, 2005
6848465 Dual-action vent check valve Feb. 1, 2005
6739584 Float apparatus of carburetor May. 25, 2004
6712944 Gas/liquid phase separator for electrolysis cell Mar. 30, 2004
6675398 Diverter for use with tank valves to direct flow to tank or rim Jan. 13, 2004
6551504 Valve for a fluid treatment system Apr. 22, 2003
6546819 Apparatus for sampling fluid from reactor vessel Apr. 15, 2003
6347640 Multifunctional valve for a vehicle tank Feb. 19, 2002
6336467 Float and valve assembly for accumulator Jan. 8, 2002
6332475 Filling stop valve Dec. 25, 2001
6263905 Automatic regulating valve apparatus Jul. 24, 2001
6213986 Liquid flow rate control device Apr. 10, 2001
6131605 Automatic drain for freight container Oct. 17, 2000
6129110 Fluid level management system Oct. 10, 2000
6129836 Two-chamber fluid control valve and water softener incorporating same Oct. 10, 2000
6089258 Float valve assembly for a water purification system Jul. 18, 2000
6076547 Device for operating a mechanism of a rinsing fixture Jun. 20, 2000
6062255 Float valve assembly for a water purification system May. 16, 2000
6021807 Water refilling control mechanism for a water tank Feb. 8, 2000
6012481 Constant-level fluid supplier Jan. 11, 2000
5915408 Float valve assembly Jun. 29, 1999
5916489 Float for carburetors Jun. 29, 1999
5887614 Overfill prevention device for storage tanks Mar. 30, 1999
5814213 Skimming apparatus Sep. 29, 1998
5790991 Apparatus for automatically regulating water level in a swimming pool Aug. 11, 1998
5715856 Liquid flow control apparatus Feb. 10, 1998
5567283 Caustic concentration regulator for chlorine generators Oct. 22, 1996
5518024 Overfill prevention device for storage tanks May. 21, 1996
5464037 Level control valve arrangement and water closet cistern Nov. 7, 1995
5445143 Humidifier with dual float valves Aug. 29, 1995
5388622 Automatic shutoff valve Feb. 14, 1995
5365970 Gravity flow chemigation system and low level shutoff valve Nov. 22, 1994
5351713 Effect-enhancing structure for rinsing a flush toilet Oct. 4, 1994
5313979 Fountain faucet May. 24, 1994
5303728 Water conservation system Apr. 19, 1994

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