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Class Information
Number: 137/418
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Quick acting > Over center mechanism
Description: Apparatus in which the quick action of the flow controlling means is obtained by use of a mechanism which has a faster or accelerated rate of motion after it passes a center position than its rate of motion before attaining the center position.

Sub-classes under this class:

Class Number Class Name Patents
137/419 Shifting weight 1

Patents under this class:

Patent Number Title Of Patent Date Issued
8430118 Automatic flush device Apr. 30, 2013
8307815 Crankcase ventilation filter assembly Nov. 13, 2012
6935844 Gas pressure driven fluid pump having magnetic valve control mechanism and method Aug. 30, 2005
6886589 Float valve May. 3, 2005
6244828 Pump and combination pump and trap with snap-over mechanism and double-seal outlet valve Jun. 12, 2001
6123099 Pinch tube tank level control valve with snap-action shutoff Sep. 26, 2000
5934881 Snap action float valve assembly with reversible plate spring for liquid feeding device Aug. 10, 1999
5896887 Pinch tube tank level control valve with snap-action shutoff Apr. 27, 1999
5894858 Device for shutting off the feed or discharge pipe of a mobility separator Apr. 20, 1999
5613835 Flow control apparatus for a water powered sump pump Mar. 25, 1997
5445501 Snap action float valve assembly for liquid feeding device Aug. 29, 1995
5230361 Snap action toggle valve actuator assembly Jul. 27, 1993
3972650 Sewage system Aug. 3, 1976
3960164 Device for mixing gases with liquids Jun. 1, 1976

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