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Class Information
Number: 137/421
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Quick acting > Trip mechanism > Weight or spring bias
Description: Apparatus which includes a weight or spring as the biasing means.










Patents under this class:

Patent Number Title Of Patent Date Issued
7802587 Float valve and method Sep. 28, 2010
7703476 Trigger mechanism for a water heater fail safe apparatus Apr. 27, 2010
6895990 Water heater fail safe apparatus May. 24, 2005
6837256 Filler tube mounted fuel tank refueling valve Jan. 4, 2005
6543471 Water heater fail safe apparatus Apr. 8, 2003
6363962 Crash valve actuator Apr. 2, 2002
6336469 Domestic hot water service inlet shut off valve triggered by fluid level in overflow tray Jan. 8, 2002
6325095 Multi-point float valve Dec. 4, 2001
6253785 Automatic leak shutoff device Jul. 3, 2001
6109294 Leak-preventing toilet flush valve assembly Aug. 29, 2000
6076547 Device for operating a mechanism of a rinsing fixture Jun. 20, 2000
5950666 Leak-preventing toilet flush valve assembly Sep. 14, 1999
5887614 Overfill prevention device for storage tanks Mar. 30, 1999
5775366 Leak-preventing toilet flush valve assembly Jul. 7, 1998
5682919 Float controlled valve shut-off assembly Nov. 4, 1997
5540256 Water level locking device for water tanks Jul. 30, 1996
5456595 Device for preventing flareup in barometric-type wick-fed liquid fuel burners Oct. 10, 1995
5409370 Liquid fuel burner safety device employing fuel tank shutoff Apr. 25, 1995
5327931 Flush valve leakage prevention and detection device Jul. 12, 1994
5232011 Flush valve leakage prevention and detection device Aug. 3, 1993
5038831 Flood stopper for drain systems Aug. 13, 1991
5033519 Storage tank flow control valve Jul. 23, 1991
4821766 Toilet tank fill valve Apr. 18, 1989
3963041 Safety shutoff valve Jun. 15, 1976











 
 
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