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Class Information
Number: 4/369
Name: Baths, closets, sinks, and spittoons > Flush closet > Tank only > With outlet siphon > Including means to relieve trapped air
Description: Subject matter having means to reduce trapped air pressure, in the siphon, to initiate liquid flow through the siphon.

Sub-classes under this class:

Class Number Class Name Patents
4/371 By raising trapped air housing 2
4/370 By releasing trapped air 13

Patents under this class:

Patent Number Title Of Patent Date Issued
6401270 Toilet apparatus Jun. 11, 2002
5706529 Water closet Jan. 13, 1998
5274855 Siphon flushing mechanism and method Jan. 4, 1994
4965892 Syphonic flush toilet Oct. 30, 1990
4254934 Hydraulic syphon with pneumatic reflux Mar. 10, 1981
4152794 Automatic pressure flush-toilet of delaying drainage May. 8, 1979

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