Patent ID: 6390443
Filing Date: 2002-05-21
Classification: B60T,C21D,F15B,F16K,H01F,Y10S

Abstract:
An electromagnetic valve, comprising:a coil and a movable iron core, the movable iron core being operatively associated with a magnetic circuit to slide in response to excitation of the coil between an open position in which a fluid passage is open and a closed position in which the fluid passage is closed, and a support member with a hole through which the movable iron core is inserted slidably, the support member being entirely within a cylinder defined by an inner surface of said coil, said cylinder extending in each direction beyond said coil so that at least a portion of the support member is provided in the magnetic circuit, the support member comprising at least one ferromagnetized part and at least one non-magnetized part, said ferromagnetized part and said non-magnetized part being continuously and integrally formed, the non-magnetized part surrounding at least an end portion of the movable iron core.