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. 22, 1987
Filed:
Jul. 18, 1986
Toshihiro Watanabe, Miyagi, JP;
Hiroshi Meguro, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A magnetic tape cassette has a front end opening adjoining an underside cutout formed in the bottom of a cassette casing. The underside cut-out is openably covered by a sliding shutter member. A torsion spring is employed for biasing the sliding shutter member toward its closed position. The torsion spring is secured to the sliding shutter member and has an extension abutting around the lateral center portion of the inner surface of the cassette casing so as to bias the sliding shutter member frontwardly toward the closed position. The torsion spring thus provides an improved appearance and better productability with simplified mounting structure therefor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile