Patent ID: 7510166

Claim:
An automatic flush actuation apparatus for a water system which comprises a water inlet, a water outlet, and a water chamber communicating between said water inlet and said water outlet, wherein said automatic flush actuation apparatus comprises: a valve member adapted for being disposed within said water chamber to control water flowing from said water inlet to said water outlet; and a powering assembly, comprising: a power source; a power generator; a CPU electrically connected with said power source to activate said power generator; a relief valve provided at said valve member for controlling said water flowing from said water chamber to said water outlet, wherein said relief valve has a water flushing passage extended along said valve member for communicating said water chamber with said water outlet, and comprises a valve stopper sitting on said valve member at a top opening of said water flushing passage to sealedly close said water flushing passage for controlling said water flowing to said water outlet, and a resilient element disposed within said water flushing passage for applying an urging force against said valve stopper to retain said valve stopper at said top opening of said water flushing passage so as to normally seal said water flushing passage; and an actuator driven by said power generator to move said relief valve between an auto-operated closed position and an auto-operated opened position, wherein at said auto-operated closed position, said valve stopper is sealedly retained to close said water passage for blocking said water passing to said water outlet, and at said auto-operated opened position, said valve stopper is moved to an opened position by said actuator for releasing said water pressure within said water chamber to allow said water passing to said water outlet.