Variable volume flushing device for water conservation

Baths – closets – sinks – and spittoons – Flush closet – Tank only

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Details

4411, 4415, E03D 509

Patent

active

051971518

ABSTRACT:
The overflow tube and ball valve of a conventional water tank are replaced with a collapsible tube, one end of which is located above the water outlet of the tank, and the other end of which is located above the water line in the tank and able to be compressed to allow water to flow through the tube thereby flushing the tank. The volume of water expelled from the tank is controlled by choosing an appropriate amount of compression. The compressed tube returns to its original height after flushing. In one embodiment of the invention, a handle on the exterior of the tank cover is used to compress the tube in a plunger-like motion. The handle is provided with markings corresponding to the amount of water flushed for a given vertical displacement of the handle. In another embodiment of the invention, a lever is positioned on the front wall of the tank and is able to cause rotation of a cantilever beam. At the free end of the beam is a connection to a vertical rod which is depressed by rotation of the lever. The vertical rod is attached to the upper end of the collapsible tube, and thus compresses same and causes the tank to flush. In this embodiment of the invention, the front wall of the tank is marked in such a manner as to enable a user to choose a suitable volume of water for flushing.

REFERENCES:
patent: 3939501 (1976-02-01), Sargent
patent: 4152793 (1979-05-01), Mills
patent: 4435859 (1984-03-01), Barnowski
patent: 4901377 (1990-02-01), Weir

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