Patent ID: 8387172

Claim:
A system for programmably controlling the duration and volume of a flow of water in a flush of a toilet, wherein the toilet includes a flush actuator of the type having a mechanism mounted to an exterior wall of the toilet tank that penetrates through the tank wall to extend inside the tank and connect to a buoyant flush valve within the tank, wherein pressure actuation of the flush actuator by a user moves the flush actuator mechanism to raise the buoyant flush valve to open a flush aperture for the toilet tank, wherein the improvement comprises: a converting element, for converting the buoyant flush valve to a non-buoyant flush valve which upon user actuation of the flush actuator raises the converted non-buoyant flush valve to a raised open position, and which enables control of the operation of the flush valve such that the duration of the flush no longer depends on the flush valve losing buoyancy in order to close; a programming element, for enabling programming of at least a small flush controlling time and a large flush controlling time, for controlling the duration and volume of water passing beneath the flush valve via gravity force, thus controlling the duration and volume of flow of water in a flush of a toilet; and a controlling element, connected to the programming element and the non-buoyant flush valve, responsive to movement of the flush actuator mechanism for retaining the non-buoyant flush valve in the raised open position upon user actuation of the flush actuator, and for releasing the non-buoyant flush valve from the raised open position for closing the non-buoyant flush valve, within a selected one of the small flush controlling time and the large flush controlling time.