The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 1987
Filed:
Apr. 01, 1986
Koji Ichihashi, Higashimatsuyama, JP;
Diesel Kiki Co. Ltd., Tokyo, JP;
Abstract
An electromagnetic proportional actuator comprises a plunger axially movably received in a cylindrical housing. An actuating member has one end thereof abutting against or connected to one axial end of the plunger. The plunger is displaced in response to electric current passing through a solenoid wound around an outer peripheral surface of the housing. A tubular member formed of a non-magnetic material is disposed between an outer peripheral surface of the plunger and an inner peripheral surface of the housing in such a manner that the plunger is axially slidable within the tubular member, to prevent the plunger from being attracted to the inner peripheral surface of the housing.