Vacuum assist flush system
AssigneeAS America, Inc.
InventorRobert M. JENSEN
Life of this patent
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Abstract
A toilet assembly may include a toilet tank that houses a container, a toilet bowl, and a trapway. The container may include a vacuum chamber that has a closed upper end. An air transfer opening may be positioned between a region exterior to the vacuum chamber and the interior of the vacuum chamber. A connecting tube may provide flow communication between the container and the trapway. When the toilet assembly is between flush cycles the upper end of the vacuum chamber and the trapway may contain pressurized air, and the flush water level in the vacuum chamber is above the air transfer opening. During a flush cycle, the flush water level in the vacuum chamber may drop below the air transfer opening, allowing flow communication of air between the region exterior to the vacuum chamber and the vacuum chamber.
Claims17
A toilet assembly, comprising:
- a toilet tank to hold flush water;
- a container positioned in and in flow communication with the toilet tank, the container comprising a vacuum chamber having a closed upper end;
- an air transfer opening between a region exterior to the vacuum chamber and an interior of the vacuum chamber;
- a flush valve assembly positioned in the toilet tank;
- a toilet bowl;
- a trapway in flow communication with the toilet bowl;
- and
- a connecting tube extending from the vacuum chamber of the container to the trapway and providing flow communication between the container and the trapway.
Dependencies are inferred from the claim text.