Electromagnetic valve

Details Electromagnetic valve Electromagnetic valve

1994-03-18

1995-08-15

Michalsky, Gerald A.

Valves and valve actuation

Electrically actuated valve

Including solenoid

13762525, F16K 3106, F15B 13044

Patent

active

054412331

ABSTRACT:
In order to prevent wearing caused by collision when a movable iron core is drawn to a fixed iron core and also to prevent wearing caused by contact when the movable iron core slides in an iron core hole of an electromagnetic valve, a cap mounted on a forward end of the movable iron core and made of an elastic material is provided with a guide tube unit to be engaged in an iron core hole and with a flange unit located on outer side of the iron core hole. Outer diameter of the guide tube unit is designed slightly larger than outer diameter of the movable iron core, and it is slidably engaged in the iron core hole. Distance between the flange unit and outer wall of the iron core hole is designed slightly shorter than distance between the movable iron core and the fixed iron core so that, when power is turned on, the flange unit is brought into contact with outer wall of the iron core hole before the movable iron core collides against the fixed iron core.

REFERENCES:
patent: 3510814 (1970-05-01), Nordfors
patent: 3747623 (1973-07-01), Greenwood et al.
patent: 4643393 (1987-02-01), Kosugi et al.

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