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. 01, 2014
Filed:
Sep. 12, 2012
Applicants:
Yasuhisa Fukushima, Osaka, JP;
Kenji Shiomi, Osaka, JP;
Masakazu Ishizuka, Hyogo, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A feed-screw type optical pick-up device transfer mechanism is provided for transferring an optical pick-up device through a base member coupled to a follower member in a state in which teeth of the follower member are engaged with a screw portion threaded around an external circumference of a driveshaft. The teeth of the follower member include two main teeth relating to the transfer of the optical pick-up device, and at least one subsidiary tooth provided between the two main teeth and not related to the transfer of the optical pick-up device.