Patent ID: 8132273

Claim:
A fill valve assembly, for a toilet, the toilet having a tank, a tank handle for opening and closing a drain to flush the toilet, the fill valve assembly comprising: a valve head for providing water flow into the tank; a valve member coupled to the valve head for movement between an open position that admits water through the valve head and a closed position that closes the valve head; a first locking link pivotally coupled to the valve member; a second locking link pivotally coupled to the first locking link; a valve reset lever pivotally connected to the second link; a float linkage pivotally connected to the valve reset lever; a buoyant float secured to the float linkage, the buoyant float moving with a water level of the tank; a valve release lever having a first end coupled to move with the tank handle and a second end having a cam surface for urging the locking links from a locked position to an unlocked position; wherein, in a full tank position, the locking links are in the locked position to maintain the valve member in the closed position and the buoyant float may move down without opening the valve member, in a flush initiated position, the cam surface of the release lever has unlocked the locking links into the unlocked position and, in turn, the valve member moves to the open position, and each locking link has a lower protrusion and an upper shoulder, and the locking links are arranged so that in the locked position, the lower protrusion of the first locking link engages the upper shoulder of the second locking link without moving while the lower protrusion of the second locking link is urged upward by the valve reset lever and, thereby, the valve member is in the closed position, and in the unlocked position, the cam surface has urged the lower protrusion of the first locking link out of engagement with the upper shoulder of the second locking link and, thereby, the valve member is in the open position.