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. 25, 1989
Filed:
Oct. 13, 1987
Yoshitake Kato, Ibaraki, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
A disk cartridge having a cartridge casing containing a double-sided disk recording medium, a pair of head entry apertures formed in both surfaces of the cartridge casing, and a shutter member having a U-shaped profile and slidably attached to the cartridge casing while pinching the same, the shutter member being at least capable of opening and closing the head entry apertures. At least one of the surfaces of the shutter member is provided with: a cover portion having a width slightly larger than the width of the head entry apertures in the direction of sliding movement of the shutter member; a front plate portion projecting from the cover portion on the opposite sides thereof in the sliding direction, and moving along the front end surface of the cartridge casing; and abutting surfaces formed at the opposite ends of the front plate portion and adapted to be brought into contact with a shutter opening member.