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:
Jul. 20, 1993
Filed:
Sep. 21, 1990
Norimasa Arai, Katsushika, JP;
Noriyoshi Kokubo, Ebina, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A disk drive (30) for use with a magnetooptical disk cartridge (10) having a magnetooptical data storage disk (12) rotatably enclosed in a generally flat, boxlike housing (14), a sliding shutter (16) mounted astraddle one edge thereof for opening and closing a pair of disk access windows (22, 24) in opposite sides of the housing. The disk drive has a cartridge cardle (38, 138) for receiving the disk cartridge as the latter is inserted in an entrance slot (36) in the disk drive casing (32, 132). Pivotally mounted to the cartridge cradle a shutter opening lever (46) opens the cartridge shutter (16) well before the disk cartridge (10) is fully inserted through the entrance slot. The electromagnet assembly (68, 168) of the magnetooptical disk drive, by which a magnetic field is generated for biasing the disk during data transfer with an optical data transducer, is positioned sufficiently close to the loaded disk cartridge (10) to appeciably reduce the height or thickness dimension of the disk drive.