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:
Apr. 06, 2004
Filed:
Sep. 20, 2001
Applicant:
Inventors:
Kazuyoshi Hanada, Hadano, JP;
Masao Iwakura, Odawara, JP;
Yasuyuki Hozumi, Kannami, JP;
Kazumi Fujimoto, Odawara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/54 ;
U.S. Cl.
CPC ...
G11B 5/54 ;
Abstract
In a latch mechanism that holds an actuator with a high shock resistance two or more magnetic members are arranged in a latch component, which generates a weaker attraction force but a more easy rotation of the latch component. The structure concentrates a magnetic force in order to rotate the latch component effectively. The effect of the magnetic force in a direction perpendicular to the direction of rotation of the magnetic members becomes smaller and a friction force at the rotation center of the latch is reduced.