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:
Feb. 19, 1991
Filed:
Dec. 07, 1988
Keiji Uehara, Iruma, JP;
TEAC Corporation, , JP;
Abstract
A mechanism for actuating a shutter of a cartridge accommodating an optical disk so as to expose a window defined in the cartridge responsive to an insertion of the cartridge into the apparatus and so as to cover the window responsive to the withdrawal of the cartridge from the apparatus. The mechanism comprises a base provided in a body of the information recording/reproducing apparatus. The base comprises a top plate defining a space for accepting the cartridge when the cartridge is inserted into the apparatus. An arm is held in said space so as to rotate freely relative to the base in a plane generally parallel to said top plate. The arm carries a projection adapted to engage with a corresponding depression formed on a front face of the shutter located at a front side of the cartridge which enters first into the space when the cartridge is inserted. A coiled spring urges the arm in a first direction opposing the rotation of the arm when the cartridge is inserted into said space. The spring further urges the arm in a second direction towards the top plate such that the arm maintains contact with an inner surface of said top plate which faces the space.