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:
Nov. 10, 1987
Filed:
Sep. 10, 1985
Applicant:
Inventors:
Tetsuo Machida, Miyagi, JP;
Kazuo Ozawa, Miyagi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G03B / ;
U.S. Cl.
CPC ...
360132 ; 242199 ;
Abstract
In a tape cassette, which comprises a cassette casing which consists of upper and lower halves which are molded by injection molding from a synthetic resin, reels mounted for rotation in the cassette casing and having at least lower flanges, and a groove formed in an outer surface of a bottom wall of the lower half in a region which is adjacent the lower flanges of the reels, an improvement comprises at least a projection being formed on at least a portion of an inner surface of the bottom wall of the lower half which overlies the guide groove so as to facilitate a flow of a molten resin injection near the guide groove during molding of the lower half.