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Class Information
Number: 4/395
Name: Baths, closets, sinks, and spittoons > Flush closet > Tank only > With outlet valve > Float type
Description: Subject matter wherein the valve blocking element is buoyant in the flushing liquid.










Sub-classes under this class:

Class Number Class Name Patents
4/396 Free floating during flush 6
4/402 Having liquid receptacle open upwardly 12
4/397 Having seating guide 20
4/403 Hollow 16


Patents under this class:

Patent Number Title Of Patent Date Issued
8667619 Water saving flapper valve weight apparatus Mar. 11, 2014
8307594 Toilet flapper and method Nov. 13, 2012
8250681 Variable buoyancy setting flapper Aug. 28, 2012
8185976 Flush valve mechanism May. 29, 2012
8166997 Toilet flush water supply device May. 1, 2012
7992232 Toilet flush control device Aug. 9, 2011
7937782 Water saving device for a toilet May. 10, 2011
7870868 Water conservation kit Jan. 18, 2011
7415736 EcoBeta Aug. 26, 2008
7185374 Discharge valve comprising a flexible ringed tube for toilets Mar. 6, 2007
6810902 Automatic water shut off system to prevent overflow of a plumbing device Nov. 2, 2004
6381764 Toilet tank flush valve for partial or full flush May. 7, 2002
6237164 Toilet tank assembly May. 29, 2001
6199221 Flush valve Mar. 13, 2001
6151725 Hygienic toilet tank Nov. 28, 2000
6112763 Valves Sep. 5, 2000
5966749 Adjustable flush valve Oct. 19, 1999
5848442 Flush valve attachment system Dec. 15, 1998
5494001 Canine lavatory facility Feb. 27, 1996
5333332 Dual flush system Aug. 2, 1994
5205000 Dual water-level toilet flushing apparatus Apr. 27, 1993
5182819 Universal commode stopper Feb. 2, 1993
5040247 Water closet metering device Aug. 20, 1991
5031250 Mechanism for filling and discharging a toilet water tank Jul. 16, 1991
4928327 Device for reducing rinsing water consumption May. 29, 1990
4872473 Dual float valve control for regular and douglas type valve Oct. 10, 1989
4841579 Flush valve with snap-on flapper Jun. 27, 1989
4842011 Flushing means Jun. 27, 1989
4683908 Eccentric float apparatus Aug. 4, 1987
4656677 Water-closet valve Apr. 14, 1987
4601071 Flush system Jul. 22, 1986
4527296 Selective-flush cistern Jul. 9, 1985
4497076 Dual flush system for controlling flush water in water closet Feb. 5, 1985
4467482 Float valve assembly Aug. 28, 1984
4419773 Adjustable tank discharge valve for controlling flush water volume Dec. 13, 1983
4411029 Control device for the water tank of a flush toilet Oct. 25, 1983
4388736 Tank flushing means Jun. 21, 1983
4385406 Water closet valve May. 31, 1983
4266304 Flush tank water saver May. 12, 1981
4229846 Water-saving float-to-inlet valve adapter device Oct. 28, 1980
4189795 Toilet flush valve Feb. 26, 1980
4080986 Ball cock float having improved anti-noise structure Mar. 28, 1978
3996629 Demand type flush tank control Dec. 14, 1976
3958281 Toilet tank flush valve May. 25, 1976











 
 
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