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Class Information
Number: 4/421
Name: Baths, closets, sinks, and spittoons > Flush closet > Bowl > Siphon discharge
Description: Subject matter wherein the bowl is provided with a siphon discharge either as an integral part of the bowl or specially adapted to connect with a waste pipe to complete the siphon.










Sub-classes under this class:

Class Number Class Name Patents
4/428 Configurated outlet 18
4/430 Distinct from bowl 4
4/424 Extra trap or false trap 14
4/427 Overflow inhibitor 69
4/429 Pan bowl 5
4/425 Siphonic jet at trap 44
4/426 With check valve 7
4/422 With flush valve 12


Patents under this class:

Patent Number Title Of Patent Date Issued
8695126 Flush toilet with sloped surfaces for improved waste removal Apr. 15, 2014
8656525 Sanitary ware of environmental protection type Feb. 25, 2014
8595868 Air suction device for toilet drain passage Dec. 3, 2013
8544123 Flush toilet Oct. 1, 2013
8438670 High performance siphonic toilet capable of operation at multiple flush volumes May. 14, 2013
8327472 Flushing arrangement for a WC and method of operating such a flushing arrangement Dec. 11, 2012
8127376 Water closet comprising variable soil exhaust system Mar. 6, 2012
8082605 Low flow hygienic apparatus and methods Dec. 27, 2011
7827628 Flush toilet Nov. 9, 2010
7661153 Flush toilet Feb. 16, 2010
7640604 Waste removal system Jan. 5, 2010
7376985 Moving siphon pipe driving device in a flushing pot May. 27, 2008
7305721 Toilet bowl device Dec. 11, 2007
7111333 Toilet structure Sep. 26, 2006
7069604 Tankless western-style flush toilet Jul. 4, 2006
6986172 Flush toilet Jan. 17, 2006
6934977 Toilet leak detection and overflow prevention system Aug. 30, 2005
6859951 Toilet accessory concealment and toilet bowl evacuation apparatus Mar. 1, 2005
6823535 Tankless western-style flush toilet including control portion Nov. 30, 2004
6687922 Stainless steel toilet resistant to corrosion by sea water Feb. 10, 2004
6668391 Water-saving toilet Dec. 30, 2003
6415457 Flushing device for toilet system Jul. 9, 2002
6408449 Urinal attachment to a commode Jun. 25, 2002
6397405 Flush toilet for RV's and boats Jun. 4, 2002
6292956 Water flush toilet bowl and a cast molding apparatus thereof Sep. 25, 2001
6247193 Flush toilet with rim nozzles Jun. 19, 2001
6195810 Flushing device for disposing of human waste with improved drainage properties Mar. 6, 2001
5926863 Low flush volume toilet Jul. 27, 1999
5706529 Water closet Jan. 13, 1998
5666675 Flushing means with a toilet bowl Sep. 16, 1997
5651148 Toilet with vortex flushing action Jul. 29, 1997
5515556 Back jet flush toilet systems and methods May. 14, 1996
5502845 Siphon-jet flush water supply system for toilet stool Apr. 2, 1996
5404597 Vacuum assist toilet trap Apr. 11, 1995
5283913 Water conserving toilet Feb. 8, 1994
5231706 Sanitary fixtures Aug. 3, 1993
5170515 Water closet Dec. 15, 1992
5050248 Combination toilet and urinal Sep. 24, 1991
4987616 Water saver water closet Jan. 29, 1991
4190910 Plumbing apparatus including means for producing a water-plug effect in sanitation appliances Mar. 4, 1980
4178644 Water saving device for toilet Dec. 18, 1979
4173800 Low-profile syphon trap Nov. 13, 1979
4171548 Toilet Oct. 23, 1979
4159550 Toilet facility Jul. 3, 1979
4145776 Unitary bowl, waterway and trap for a toilet, and the method of making same Mar. 27, 1979
4106131 Water distributor for siphon closet Aug. 15, 1978
4086318 Molding process for a plastic-coated ceramic decorative plumbing fixture Apr. 25, 1978
4028746 Portable toilet Jun. 14, 1977











 
 
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