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Class Information
Number: 4/326
Name: Baths, closets, sinks, and spittoons > Flush closet > Manual selection of the amount of flush > Alternate unicyclic flush > Plural flush valves
Description: Subject matter having more than one flush valve wherein they are arranged for selectively releasing either all or a preselected portion of the water in the tank.










Sub-classes under this class:

Class Number Class Name Patents
4/327 In axial alignment 17


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8205276 Pressurized dual flush system Jun. 26, 2012
7975324 Pressurized dual flush system Jul. 12, 2011
7958576 Decorative toilet for the physically challenged Jun. 14, 2011
7921481 Toilet bowl flush device Apr. 12, 2011
7810178 Dual toilet tank system Oct. 12, 2010
7219375 Toilet flushing arrangement May. 22, 2007
6775859 Dual flush toilet Aug. 17, 2004
6704945 Dual inlet flush valve system for gravity operated toilets Mar. 16, 2004
6675397 Reduces the amount of water flow in toilets Jan. 13, 2004
6658673 Toilet valve assembly Dec. 9, 2003
6651263 Toilet tank having a two-stage flushing device Nov. 25, 2003
6574803 Dual volume toilet tank Jun. 10, 2003
6571400 Toilet bowl water flow adjustment system Jun. 3, 2003
6510563 Flush valve adapter for converting a single flush valve system to a dual flush valve system Jan. 28, 2003
6484327 Toilet valve assembly Nov. 26, 2002
6332229 Automated flap and cup cleaner water-saving toilet Dec. 25, 2001
6282731 Multiple variable flush water storage tank toilet Sep. 4, 2001
6178567 Multi-flush system and method Jan. 30, 2001
6173456 Double-cistern water-conserving sanitary water tank Jan. 16, 2001
6041452 Water-saving toilet Mar. 28, 2000
5903931 Toilet with dual volume flush May. 18, 1999
5887292 Dual flush toilet system Mar. 30, 1999
5881399 Dual flush assembly for water closets Mar. 16, 1999
5873136 Pop-up bowl valve for toilet with two flush modalities Feb. 23, 1999
5761749 Structure of toilet bowl Jun. 9, 1998
5754986 Water-saving device of water tank for flush toilet May. 26, 1998
5740561 Water-saving structure of toilet bowl water tank Apr. 21, 1998
5685026 Structure of toilet bowl Nov. 11, 1997
5678252 Dual manifold flushing assembly Oct. 21, 1997
5647067 Apparatus for selectively flushing a toilet with either a full or partial tank of water Jul. 15, 1997
5548850 Toilet with two flush modalities Aug. 27, 1996
5469585 Flushing device of toilet Nov. 28, 1995
5450634 Incremental dual storage water flush toilet Sep. 19, 1995
5381561 Biflush valve system for conserving water especially for tank-type toilets Jan. 17, 1995
5333332 Dual flush system Aug. 2, 1994
5261129 Dual volume flushing system for a flush tank Nov. 16, 1993
5175893 Dual flush valve assembly Jan. 5, 1993
5121510 Double valve water discharge unit for water casings or tanks Jun. 16, 1992
5111537 Toilet apparatus May. 12, 1992
5067180 Method and apparatus for conserving water used in the disposal of human body waste Nov. 26, 1991
5042096 Water-saving toilet flusher Aug. 27, 1991
5033129 Flow augmented toilet flushing unit Jul. 23, 1991
5005225 Dual flush valve for water closets Apr. 9, 1991
5003644 Two-stage water discharge mechanism for flush toilet tank Apr. 2, 1991
4878256 Single handle dual flushing toilet Nov. 7, 1989
4833738 Control valve assembly for a cistern flushing apparatus May. 30, 1989
4829605 Dual flush valve assembly May. 16, 1989
4561131 Dual flush toilet for water saving Dec. 31, 1985
4504984 Two-stage toilet flush valve assembly Mar. 19, 1985
4353138 Two stage flush valve assembly Oct. 12, 1982

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