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. 15, 1998
Filed:
Sep. 12, 1995
Kiyoshi Ohmori, Kanagawa, JP;
Takatsugu Funawatari, Miyagi, JP;
Sony Corporation, Toyko, JP;
Abstract
A disk cartridge including a housing which rotatably accommodates therein a disk, such as a magneto-optic disk, which has a main recording surface and a protective surface. The housing is formed of upper and lower halves with the upper half having a first opening capable of exposing the protective layer to a magnetic-field application head of the disk unit and the lower half having a second opening capable of exposing the main recording surface to an objective lens assembly of the disk unit when the disk cartridge is inserted into the disk unit. The first and second openings are provided at a cartridge insertion end of the cartridge and are each of a defined width measured in the lateral direction of the cartridge and are designed such that the defined width of one of the first and second openings is smaller than the defined width of the other of the first and second openings. In this disk cartridge, the upper and lower halves respectively include first and second bridge portions provided at the cartridge insertion end with the first and second bridge portions interconnecting respectively first and second pairs of opposed side edges of the first and second openings. In order to enhance the rigidity of both of the bridge portions, the thickness of one of the first and second bridge portions is greater than the thickness of the other of the first and second bridge portions.