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Class Information
Number: 4/407
Name: Baths, closets, sinks, and spittoons > Flush closet > Tank only > With outlet valve > Actuator > Pneumatic or hydraulic
Description: Subject matter wherein the actuation is effected by a variation in fluid pressure or flow.

Patents under this class:

Patent Number Title Of Patent Date Issued
7581263 Toilet flush water opening device provided with an electrohydraulic actuator Sep. 1, 2009
7225478 Electronic toilet and flushing system Jun. 5, 2007
7062801 Two-staged toiled tank bowl control system Jun. 20, 2006
6823534 Dual flush apparatus Nov. 30, 2004
6647559 Flushing unit for a toilet Nov. 18, 2003
6584622 Method and device for timer-controlled flushing of water toilets Jul. 1, 2003
6421843 Low water volume toilet Jul. 23, 2002
5553333 Pressurized water closet flushing system Sep. 10, 1996
5228147 Hydropneumatic flusher for toilet tanks Jul. 20, 1993
5170514 Automatic fluid-flow control system Dec. 15, 1992
5004462 Adjustable water-level flushing apparatus Apr. 2, 1991
4833738 Control valve assembly for a cistern flushing apparatus May. 30, 1989
4825490 Automatic toilet flushing apparatus May. 2, 1989
4809367 Cistern flushing apparatus Mar. 7, 1989
RE32750 Fluid operated waste tank servicing assembly Sep. 20, 1988
4756031 Automatic toilet flushing system Jul. 12, 1988
4726190 Pressure generator with check valve Feb. 23, 1988
4682533 Vandal resistant and tamper proof pneumatic push button assembly for moving a volume of fluid Jul. 28, 1987
4631760 Automatic flushing system Dec. 30, 1986
4630644 Dual operated metering valve connected to both a hand operated push button and a foot operated push button Dec. 23, 1986
4586692 Flushometer valve integrable with a structure May. 6, 1986
4584726 Fluid operated waste tank servicing assembly Apr. 29, 1986
4428084 Water control device for flush toilet Jan. 31, 1984
4333184 Multi-function closet stool Jun. 8, 1982
4304015 Pneumatic actuating device for a toilet flush valve Dec. 8, 1981
4275471 Hydraulically operated flush valve for toilet flush tanks and similar devices Jun. 30, 1981
4196481 Male urinal with automatic flushing Apr. 8, 1980
3999223 Flush valve with selected volume control Dec. 28, 1976
3994029 Fluid control system Nov. 30, 1976
3987501 Toilet flush assembly Oct. 26, 1976

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