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Class Information
Number: 4/380
Name: Baths, closets, sinks, and spittoons > Flush closet > Tank only > With outlet valve > With delay of valve closing > By pressure or suction control of valve
Description: Subject matter wherein the movable element is held open by the direct application of pressure or suction to the movable element.

Patents under this class:

Patent Number Title Of Patent Date Issued
8689368 Flushing mechanism Apr. 8, 2014
8332970 Flushing mechanism Dec. 18, 2012
6910232 Toilet tank valve Jun. 28, 2005
6834399 Pressure vessel Dec. 28, 2004
6715162 Toilet assembly Apr. 6, 2004
6647559 Flushing unit for a toilet Nov. 18, 2003
6467497 Buffer box for use in a vacuum drainage system Oct. 22, 2002
6457187 Pressurized water closet flushing system Oct. 1, 2002
5170514 Automatic fluid-flow control system Dec. 15, 1992
4918763 Water closet with supplemented rim wash water flow Apr. 24, 1990
4865631 Vacuum sewage system Sep. 12, 1989
4707868 Toilet flushing apparatus Nov. 24, 1987
4391288 Method and a device for effecting rinsing of an inverted siphon, which forms part of a sewer Jul. 5, 1983
4376315 Vacuum flush valve Mar. 15, 1983
4285359 Interface unit for vacuum sewers Aug. 25, 1981
4254934 Hydraulic syphon with pneumatic reflux Mar. 10, 1981
4232409 Pneumatic assisted flushing apparatus for toilets Nov. 11, 1980
3973751 Siphon with pressure priming and pneumatic reflux Aug. 10, 1976

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