Patent Number: 8,869,317

Title: Buoyancy operation mechanism for sewage suction device used in toilets

Abstract: This invention discloses a buoyancy operation mechanism for a sewage suction device used in toilet. The mechanism includes: a water tank bottom plate that contains a lower leading pole and a second pulley, the tank wall having an aperture and a first pulley; an upper cover plate having an upper leading pole and a third pulley; a hollow floating box with either a rectangular or circular cross section wherein its center is equipped with a leading hole, a limiting barrier, a first hoist ring and a second hoist ring; a base plate that having a fourth pulley; and a top cover plate. The water tank described above is seated on the base plate, the leading hole of the floating box is positioned over the lower leading pole; the upper cover plate is positioned inside the water tank, and the top cover plate is located on top of the water tank; the first hoist ring of the floating box is tied to the first pulling string and the second hoist ring is tied to the second pulling string where both strings continue outside the water tank. This invention uses the change of liquid level in the water tank during the process of flushing the toilet, wherein the buoyancy operation mechanism automatically controls the sewage suction device to pump and reset by utilizing the pulling strings. The mechanism is compact in structure and convenient in operation.

Inventors: Gu; Guoqing (Edison, NJ)

Assignee:

International Classification: E03D 11/10 (20060101); E03D 11/00 (20060101)

Expiration Date: 2018-10-28 0:00:00