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Class Information
Number: 4/379
Name: Baths, closets, sinks, and spittoons > Flush closet > Tank only > With outlet valve > With delay of valve closing
Description: Subject matter including means to maintain the valve in an open condition until some predetermined condition occurs.

Sub-classes under this class:

Class Number Class Name Patents
4/381 By float releasable latch 18
4/387 By flow-responsive element in valve outlet 12
4/380 By pressure or suction control of valve 18
4/388 By retarding mechanism, e.g., dashpot 16
4/386 By shifting weight 8
4/385 By varying weight releasable latch 4

Patents under this class:

Patent Number Title Of Patent Date Issued
8266733 Toilet flush valve Sep. 18, 2012
6880181 Apparatus for delaying the closing of a toilet flapper valve Apr. 19, 2005
6715162 Toilet assembly Apr. 6, 2004
6425145 Push button for metered flow Jul. 30, 2002
6401269 Flapper valve with dual action arm Jun. 11, 2002
6370707 Supply-line-sealed flush controller Apr. 16, 2002
5896593 Piston flush valve Apr. 27, 1999
5850639 Tank device for flushing toilet bowl Dec. 22, 1998
5742951 Inlet valve mechanism Apr. 28, 1998
5720053 Apparatus for regulating the quantity of liquid for the flushing of toilet bowls Feb. 24, 1998
5673441 Flush valve for toilets Oct. 7, 1997
5625906 Toilet flush control assembly and methods May. 6, 1997
5553333 Pressurized water closet flushing system Sep. 10, 1996
5305474 Stoppable flushing mechanism with assured minimal flow Apr. 26, 1994
5301373 Dual flush mechanism Apr. 12, 1994
5293650 Replacement flush valve Mar. 15, 1994
5291620 Push button toilet flush mechanism Mar. 8, 1994
5289594 Water saver toilet flush control system Mar. 1, 1994
5179739 Water conserving toilet assembly Jan. 19, 1993
5170514 Automatic fluid-flow control system Dec. 15, 1992
5088133 Flush mechanism for toilets Feb. 18, 1992
4937894 Dual flush toilet Jul. 3, 1990
4907302 In-field installable closing delay cup Mar. 13, 1990
4305163 Toilet bowl flush system Dec. 15, 1981
4193145 Toilet flushing valve mechanism Mar. 18, 1980
4134165 Flush toilet accessory Jan. 16, 1979
4091474 Flush interrupting attachment for toilet tanks May. 30, 1978
4069521 System and means for using white waters in buildings Jan. 24, 1978
4000526 Toilet flushing apparatus Jan. 4, 1977

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