Design for flush tank control using non-buoyant flapper valve

Claim 1

A flush arrangement for preventing the utilization of an unnecessary amount of water in the flushing of a toilet of the type having a water storage tank and a handle movable to bring about a lifting of a water release device from its seat to accomplish a controlled flushing of the toilet, and water release device being a pivotally mounted non-buoyant, one piece solid rubber flapper valve, said flapper valve including a generally flat member having a sealing portion, an integral generally ball-shaped portion disposed centrally on said seating portion and surrounded thereby, said ball shaped portion being of solid construction utilizing no air pocket to render it buoyant, with a greater proprotion of said ball shaped portion being above said flat member than below it, means connecting a portion of said flapper valve to said handle so that handle manipulation brings about a pivotal upward movement of said non-buoyant flapper valve away from its seat, thus permitting a controlled flow of water from said tank, said flapper valve, because of its non-buoyance and weight of said ball-shaped portion returns to its seat the moment said handle is released, such that the flow of water from the tank will be instantly shut off by the substantially flat sealing portion of said flapper valve.