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:
Feb. 29, 1984
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
335259 ; 335265 ;
Abstract
An electromagnet assembly is provided. It has a first movable core and a second movable core provided in association with a coil. The first movable core is energized toward the second movable core by a first spring while the second movable core is urged in the direction away from the first movable core by a second spring which has larger biasing force than that of the first spring. When the second movable core is attracted by magnetic excitation of the coil, the first movable core is pressed downwards by the second movable core.