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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 |
| 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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