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:
Sep. 20, 1994
Filed:
Apr. 05, 1991
Applicant:
Inventor:
Tomihiro Nakagawa, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
2423383 ; 242343 ;
Abstract
A tape cassette has a plurality of spaced apart, elongated bearing surface portions elevated relative to an internal surface of a cassette case and on which a reel lock member is adapted to slide. Accordingly, the sliding movement of the reel lock member is prevented from being hindered by a burr generated at the periphery of a hole formed through the internal surface or by a burr-like projection generated at the periphery of an indentation formed by contact of an ejector pin with the internal surface upon molding of the cassette case. As a result, the locking and unlocking operations of the reel lock member with respect to a tape reel can be reliably effected.