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. 10, 1985
Filed:
Oct. 03, 1983
Applicant:
Inventors:
Seiji Morino, Okazaki, JP;
Hisasi Kawai, Toyohashi, JP;
Assignee:
Nippon Soken, Inc., Nishio, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 12 ; 310 15 ;
Abstract
An electromagnetic driving device for causing linear movement of a movable member. The device includes a fixed magnetic core around the entire length of which a coil is wound. The cross-sectional area of the central portion of the fixed magnetic core is greater than the cross-sectional area of the end portions of the fixed magnetic core so that the fixed magnetic core is not excessively heavy even if the stroke of the movable member is relatively large.