Patent ID: 7055799

Claim:
An electromagnetic apparatus for automatically and selectively supplying and shutting off fluid, comprising: a frame unit coaxially contained in piping or a housing forming the flow path of a fluid; a through unit having at least one through hole to form at least one flow path through said frame unit; a coil unit disposed in said frame unit to generate an electromagnetic force; a rotor facing said frame unit to selectively open and close the flow paths through interaction with said electromagnetic force generated in said coil unit; a shaft supporting said rotor; and a casing supporting said frame unit and forming an appearance of said apparatus, said electromagnetic apparatus comprises upper and lower portions, said frame unit comprises upper and lower frames disposed in said upper and lower portions of said electromagnetic apparatus, respectively, and said coil unit comprises coils that are disposed in said upper and lower frames, respectively, and are connected in serial to each other so that an attractive force and a repulsive force are simultaneously generated and applied to said rotor.