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:
Jan. 01, 2002
Filed:
Oct. 15, 1999
Applicant:
Inventors:
Kenji Uchiyama, Saitama-ken, JP;
Yasuo Ogiwara, Saitama-ken, JP;
Akihiro Muto, Saitama-ken, JP;
Tetsuya Uchiyama, Saitama-ken, JP;
Takashi Komiyama, Saitama-ken, JP;
Assignee:
Pioneer Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B 2/102 ;
U.S. Cl.
CPC ...
G11B 2/102 ;
Abstract
An optical pickup sending device comprises: an optical pickup for reading information from an information recording medium; a rack member provided in connection with the optical pickup; and a screwed shaft engaged with the rack member for sending the optical pickup along the screwed shaft. In particular, the rack member is formed with a plurality of curved teeth each having a radius of curvature larger than that of the screwed shaft.