Patent ID: 6199587
Filing Date: 2001-03-13
Classification: F16K,Y10T

Abstract:
A solenoid valve comprising a first coil; a plunger, at least a first and a second opening in said valve, and a latching mechanism placed in association with the first opening, wherein the latching mechanism causes latching, with a predetermined latching force, of the plunger to the first opening and energisation of the first coil along a predetermined first polarity causes at least a reduction of the latching force,the plunger having a first end towards said first opening and a second end towards said second opening, the first coil being remote from said first end and a magnetic field extensor being provided to extend a first pole of the magnetic field produced by the first coil to said first end of the plunger, the magnetic field extensor comprising a ferrous material member terminated by a ferrous endpiece and being movable with respect to said first opening.