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:
Aug. 07, 2001
Filed:
Oct. 21, 1999
Hiroshi Meguro, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A disk cartridge comprising a center core at the central portion thereof with which it is chucked onto a rotary drive, a disk to be mounted onto the rotary drive and rotated at a rotation speed of at least 3,000 rpm, and a cartridge body for rotatably accommodating the disk. The cartridge body has a center opening in the central part of its lower surface through which the center core of the disk is exposed outside, a pair of recording/reproducing openings in opposing positions of the upper and lower surfaces of the cartridge body through which at least a part of the signal recording area of the disk is exposed outside in a radial direction, and a partition wall formed between the upper and lower surfaces of the cartridge body to enclose the almost entire outer periphery of the disk. The partition wall has a notch at a position downstream, in the disk rotation direction, of the recording/reproducing openings, which notch communicates through an exhaust passage to an exhaust opening formed in the front wall of the cartridge body.