Water closet tank drain valve

Details Water closet tank drain valve Water closet tank drain valve

1977-07-22

1978-09-19

Artis, Henry K.

Baths, closets, sinks, and spittoons

Flush closet

With recirculating means

4323, 4372, 4 48, 4 50, 4375, 4115, 4249, 137577, E03D 100, E03D 300, E03D 500

Patent

active

041142039

ABSTRACT:
A self-contained, recirculating flush liquid, type of water closet for passenger aircraft; wherein, the means for periodically draining the contents of the waste holding tank, comprises an inverted U-shaped tube which is separated at the bend of the U-shape or elbow thereof, into approximately two half-parts. These half-parts are joined by a movable or flexible connection in order that one of the half-parts can be moved relative to the other half-part. One end of the U-shaped tube is rigidly fixed to and projects out from the bottom of the tank; and the other movable half-part has an intake nozzle opening which when it is positioned at the bottom surface of the tank, it is at an operative waste removal position, and when it is moved to a raised position where the intake nozzle opening is at the top of the tank, the removal of waste from the tank is prevented.

REFERENCES:
patent: 1364309 (1921-01-01), Popp
patent: 2099631 (1937-11-01), Sarra
patent: 2122909 (1947-07-01), Eganas
patent: 3454967 (1969-07-01), Corliss
patent: 3593346 (1971-07-01), Katona
patent: 3662888 (1972-05-01), Kemper

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