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Class Information
Number: 137/430
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Rectilinearly traveling float > Float co-axial with valve or port
Description: Apparatus in which the path of travel of the float is co-axial with the valve or part controlled in response to the float.










Sub-classes under this class:

Class Number Class Name Patents
137/431 Float is spreader or anti-splash means 1
137/433 Float rigid with valve 177
137/432 Float surrounds inlet pipe 55


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8689821 Air release valve Apr. 8, 2014
8689815 Air release vent valve Apr. 8, 2014
8631814 Flow control device Jan. 21, 2014
8517045 Automatic fluid flow control device Aug. 27, 2013
8347910 Water refilling plug for battery cells Jan. 8, 2013
8328770 Disposable blood transfusion device Dec. 11, 2012
8291929 Dual float rollover valve Oct. 23, 2012
8033292 Heated humidified chamber with autofeed mechanism Oct. 11, 2011
7921868 Airing and venting elements for pipes and fittings Apr. 12, 2011
7617838 Gas purge valve Nov. 17, 2009
7614420 Autofeed mechanism for heated humidifier chamber Nov. 10, 2009
7571740 Fuel cutoff valve Aug. 11, 2009
7243669 Float-responsive valve with premature closure prevention Jul. 17, 2007
7163023 Fuel vapor vent valve float assembly and method of making same Jan. 16, 2007
7047999 Humidification chamber with float-valve having improved float May. 23, 2006
7040343 Valve assembly with low gas level signaling and controlling function May. 9, 2006
7011105 Vent valve Mar. 14, 2006
6962163 Dual-float snap-action flush valve Nov. 8, 2005
6910499 Valve assembly for pressurized fluid vessel Jun. 28, 2005
6886588 Buoyancy flushing apparatus and method thereof May. 3, 2005
6848469 Adjustable valve for a toilet Feb. 1, 2005
6810904 Lavatory flush tank silent-operating fill device Nov. 2, 2004
6783518 Float for liquid waste disposal apparatus Aug. 31, 2004
6712090 Hydraulic valve Mar. 30, 2004
6688330 Silenced valve Feb. 10, 2004
6551504 Valve for a fluid treatment system Apr. 22, 2003
6523564 Above ground overfill valve Feb. 25, 2003
6513541 Vent valve Feb. 4, 2003
6478044 Snap-action piloted fill valve Nov. 12, 2002
6450196 Float valve Sep. 17, 2002
6431201 Wet battery and vehicle-based water management system Aug. 13, 2002
6408869 Safety valve Jun. 25, 2002
6332475 Filling stop valve Dec. 25, 2001
6318421 Limit control device for filling a liquid storage tank Nov. 20, 2001
6230730 Container having collapsible inline fluid-weight control device May. 15, 2001
6213986 Liquid flow rate control device Apr. 10, 2001
6192920 Chain link float valve Feb. 27, 2001
6085771 Two-stage fuel tank vapor recovery vent valve and method of making same Jul. 11, 2000
6031968 Humidifying system with a filling level control for the liquid to be evaporated Feb. 29, 2000
5983919 Automatic drain valve Nov. 16, 1999
5975131 Tank valve and opening sensor Nov. 2, 1999
5920920 Straight trap toilet apparatus Jul. 13, 1999
5850848 Float valve Dec. 22, 1998
5850849 Storage tank shutoff valve with double cam assembly Dec. 22, 1998
5839466 Automatic watering device Nov. 24, 1998
5839465 Above-ground tank auto-limiter Nov. 24, 1998
5829465 Container having fluid-weight control device Nov. 3, 1998
5738141 WC-cistern filling valve Apr. 14, 1998
5715856 Liquid flow control apparatus Feb. 10, 1998
5685331 Oil level regulator Nov. 11, 1997

1 2










 
 
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