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Class Information
Number: 4/359
Name: Baths, closets, sinks, and spittoons > Flush closet > Tank only > Pressure tank > Valve held open by flow
Description: Subject matter wherein an outlet valve is held open by the liquid flow or pressure acting against a valve, piston, or diaphragm.

Patents under this class:

Patent Number Title Of Patent Date Issued
7617545 Noise suppression flush cartridge for pressure assisted toilet Nov. 17, 2009
7476368 Method and device for deactivating items and for maintaining such items in a deactivated state Jan. 13, 2009
7334272 Flushing controlling mechanism Feb. 26, 2008
7171701 Pressure-flushing device Feb. 6, 2007
6834399 Pressure vessel Dec. 28, 2004
6550076 Valve assembly for a pressure flush system Apr. 22, 2003
6457187 Pressurized water closet flushing system Oct. 1, 2002
6360378 Pressurized water closet flushing system Mar. 26, 2002
5920919 Toilet flush system Jul. 13, 1999
5802628 Pressure flushing device discharge extension Sep. 8, 1998
5742950 Apparatus for pressure assisted flush toilets Apr. 28, 1998
5652969 Flush apparatus for use with toilet odor venting apparatus Aug. 5, 1997
5435019 Pressurized toilet flushing assembly Jul. 25, 1995
5361426 Hydraulically controlled pressurized water closet flushing system Nov. 8, 1994
5241711 Pressurized toilet flushing assembly Sep. 7, 1993
4143433 Water closet Mar. 13, 1979
3945055 Toilet flushing reservoir system Mar. 23, 1976

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