Automatic pool cleaner system with timer device

Claim 1

A water flow control device for swimming pool cleaners comprising a housing having an internal compartment and having axially aligned water inlet and outlet openings therefor whereby said device is adapted to be connected into a water supply hose for a pool cleaner, a water wheel and means mounting it for rotation within said housing adjacent said inlet opening and in the path of water coming into said housing through said inlet opening, a wheel-like rotary multi-valving member and means mounting it for rotation within said housing adjacent said outlet opening and in the path of water flowing from said inlet to said outlet opening, said valving member comprising a plate valving element and an arcuate segmental valving element, the latter being associated with said outlet opening, a secondary discharge passageway formed in said housing terminating adjacent said plate valving element, a port in said plate element adapted to communicate with said secondary discharge passageway when water flow through said outlet opening is restricted by said arcuate segmental valving element and adapted to be out of communication with said secondary discharge passageway when said arcuate segmental valving element is in non-restricting relation to said outlet opening, a pair of spaced parallel plates positioned within said housing in laterally enclosing relation to said water wheel and said multi-valving member and serving to constrain the flow of water between said inlet and outlet openings, and means, including gear reducer means disposed within said housing and at the side of one of said plates opposite the side thereof at which said wheel and multi-valving member are located, driveably interconnecting said wheel and multi-valving member.