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. 02, 2003
Filed:
Mar. 15, 2001
Akihiro Muto, Saitama, JP;
Yoshinori Yamada, Saitama, JP;
Tetsuya Uchiyama, Saitama, JP;
Koji Asao, Saitama, JP;
Yasuhiro Shinkai, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
The feed mechanism has a lead screw , a pickup assembly , an engagement piece , and a restrictor piece , a compressed coil spring , and a bearing portion . The engagement piece has a thread portion engaged with a screw groove of the lead screw . The engagement piece moves along the lead screw and can come close to and off from the lead screw . The pickup assembly moves together with the engagement piece . The restrictor piece prevents the engagement piece from disengaging from the lead screw , except when the screw groove moves apart from the thread portion . The compressed coil spring urges the engagement piece toward the lead screw . The bearing portion rotatively supports the lead screw and allows the lead screw to move apart from the engagement piece when the engagement piece has reached an end thereof.