Patent ID: 6874751
Filing Date: 2005-04-05
Classification: F16K,G05D

Abstract:
1. An electromagnetic valve, comprising: a valve seat assembly having an intake port, a discharge port, a fluid passage formed between said intake port and said discharge port and a valve seat provided in association with said fluid passage; a plunger assembly comprised of a plunger disposed reciprocatively slideably within a cylindrical hollow chamber and a valve element provided at a top end of said plunger for opening and closing said fluid passage in cooperation with said valve seat; a coil for driving said plunger to displace said plunger assembly; a fixed core disposed in a direction in which said plunger is displaced for attracting said plunger to a retracted position upon electrical energization of said coil to hold said plunger at the retracted position; a resilient member disposed in a compressed state between said plunger and said fixed core, when viewed in said direction in which said plunger is displaced, to resiliently urge said plunger assembly to an advanced position; and a spacer interposed between said plunger and said fixed core, said spacer being provided with a protrusion.