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:
Dec. 27, 1988
Filed:
Aug. 25, 1986
Applicant:
Inventors:
Yuji Ikedo, Tokyo, JP;
Tsutomu Miyakawa, Tokyo, JP;
Takahiro Okajima, Saitama, JP;
Masahiko Miyake, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 44 ; 369 45 ; 350252 ;
Abstract
An optical pickup system in which a tracking objective lens is moved by opposed magnetic coils attached to the lens along the axis of the lens and in the transverse direction across the recording tracks. A servo system on a fixed base supplies current to the movable coils by lead wires which are connected at the middle to a fixed vibration absorbing material, such as polyurethane foam.