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US 4,233,585 AGranted
Plunger type electromagnet
AssigneeHitachi, Ltd.
InventorsShun-ichiro Sugimoto, Hisazi Shinoki
Life of this patent
Estimating the term…
Abstract
An electromagnet of the plunger type is disclosed which includes a plunger body and a guide for guiding the plunger body in its sliding movement. The plunger body is formed with a resin coat on the surface thereof which is brought into sliding contact with the guide, and the guide is formed with a resin at least in a portion thereof which is brought into sliding contact with the plunger body, so that in the electromagnet the magnetic resistance may be reduced and the sliding characteristics and the wear resisting property may be improved.
Claims2
A plunger type electromagnet comprising:
- a plunger body slidingly moved by an electromagnetic force;
- and
- a guide for guiding said plunger body in its sliding movement;
- wherein the improvement resides in applying a resin coat to a surface of said plunger body which surface is brought into sliding contact with said guide, and in using a resinous material for forming at least a portion of said guide which portion is brought into sliding contact with said plunger body.
1 more element
Dependencies are inferred from the claim text.