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:
Mar. 23, 2004
Filed:
Apr. 04, 2003
Suehiro Harada, Osaka, JP;
Funai Electric Co., Ltd., Osaka, JP;
Abstract
In an optical pickup, an actuator base of an objective lens unit is attached to an end face of a housing by a reference bolt and two tilt adjusting bolts which are respectively inserted in through holes of the housing. A tapered conical spring is used which has one end portion whose outside diameter is set to be identical to or slightly smaller than the diameter of a bottom surface of a recessed portion and another end portion whose outside diameter is set to be identical to or slightly smaller than the diameter of a head of the reference bolt. The one end portion of the tapered conical spring is made to abut against the bottom surface of the recessed portion, while the other end portion of the tapered conical spring is made to abut against the head of the reference bolt.