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Class Information
Number: 4/354
Name: Baths, closets, sinks, and spittoons > Flush closet > Tank only > Pressure tank
Description: Subject matter wherein the tank is hermetically sealed and is to be filled with a fluid at the same pressure as the supply line.










Sub-classes under this class:

Class Number Class Name Patents
4/362 By air under pressure 30
4/360 Dashpot-controlled outlet valve 5
4/356 Float outlet valve 8
4/355 Float-released outlet valve 4
4/361 Pneumatic or hydraulic adjustability 17
4/359 Valve held open by flow 17


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8332970 Flushing mechanism Dec. 18, 2012
8281424 Flush toilet Oct. 9, 2012
8205276 Pressurized dual flush system Jun. 26, 2012
8151378 Pressure flushing device Apr. 10, 2012
8142572 Lavatory pan washing apparatus and washing method Mar. 27, 2012
7975324 Pressurized dual flush system Jul. 12, 2011
7694355 Pressure vessel Apr. 13, 2010
7653951 Flushing device comprising a pressurized chamber and evacuation fitting for a flushing device and system comprising a flushing device and a toilet bowl Feb. 2, 2010
7617545 Noise suppression flush cartridge for pressure assisted toilet Nov. 17, 2009
7322053 Pressurized toilet cistern Jan. 29, 2008
7299508 Pressurized flush system Nov. 27, 2007
7272864 Flushing flow distributor for a flushing cistern, flushing system having a flushing flow distributor of this type and toilet system having a flushing flow distributor Sep. 25, 2007
7171701 Pressure-flushing device Feb. 6, 2007
7137156 Portable Lavatory Nov. 21, 2006
7096517 Flushing device for a lavatory Aug. 29, 2006
7010816 Pressure assisted dual flush operating system Mar. 14, 2006
6907623 Pressurized water closet flush system Jun. 21, 2005
6834399 Pressure vessel Dec. 28, 2004
6647559 Flushing unit for a toilet Nov. 18, 2003
6550076 Valve assembly for a pressure flush system Apr. 22, 2003
RE37921 Pressurized water closet flushing system Dec. 10, 2002
6470505 Water efficient toilet Oct. 29, 2002
6467101 Toilet flushing and cleaning device Oct. 22, 2002
6457187 Pressurized water closet flushing system Oct. 1, 2002
6453479 Flusher having consistent flush-valve-closure pressure Sep. 24, 2002
6367095 Flushing device for a toilet Apr. 9, 2002
6360378 Pressurized water closet flushing system Mar. 26, 2002
6343387 Volume control for a water closet Feb. 5, 2002
6279176 Low water toilet Aug. 28, 2001
6219855 Toilet bowl in combination with pressurized flush tank Apr. 24, 2001
6029287 Power flush tank with volume reduction tube Feb. 29, 2000
6029288 Power flush tank with improved air inducer Feb. 29, 2000
5970527 Pressurized water closet flushing system Oct. 26, 1999
5926860 Low profile vacuum toilet Jul. 27, 1999
5857224 Pressure flush tank for use in a toilet enclosure Jan. 12, 1999
5802628 Pressure flushing device discharge extension Sep. 8, 1998
5797582 Distribution device for feeding a capacitor with gaseous fluid Aug. 25, 1998
5742950 Apparatus for pressure assisted flush toilets Apr. 28, 1998
5652969 Flush apparatus for use with toilet odor venting apparatus Aug. 5, 1997
5611091 Toilet trip lever arm with integral energy absorbing member Mar. 18, 1997
5596772 Toilet flushing system with multi-diaphragm storage container having three fluid receiving chambers Jan. 28, 1997
5553333 Pressurized water closet flushing system Sep. 10, 1996
5487193 Enhanced operation toilet Jan. 30, 1996
5406652 Toilet water source Apr. 18, 1995
5386596 Water saver toilet Feb. 7, 1995
5363513 Pressurized flushing toilet Nov. 15, 1994
5361426 Hydraulically controlled pressurized water closet flushing system Nov. 8, 1994
5343572 Pressured toilet tank flush valve Sep. 6, 1994
5136732 Commode flushing apparatus Aug. 11, 1992
5115521 Water conservation apparatus for water closets May. 26, 1992

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