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. 27, 1993
Filed:
Feb. 11, 1991
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 4416 ; 359814 ; 359824 ;
Abstract
An objective lens actuator for an optical storage drive includes a cross-sectionally L-shaped torsion plate spring which is fixed at its central portion to an objective lens holder and at its opposite ends to free ends of a pair of parallel spaced, cantilevered plate springs. The torsion plate spring is caused to twist to displace the objective lens holder and an objective lens mounted thereon in the tracking direction. The parallel spaced plate springs are caused to bend to displace the objective lens holder and the objective lens in the focusing direction.