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:
Feb. 01, 1994
Filed:
Dec. 17, 1992
TDK Corporation, Tokyo, JP;
Abstract
A tape cassette accommodating case comprising: a case main body forming an accommodating portion of a tape cassette; a lid provided at said case main body capable of opening and closing; and a pair of hub-rotation-preventive protrusions standingly provided at said lid; said pair of hub-rotation-preventive protrusions each being composed of at least three stopper pieces radially provided to be inserted into a hub hole B; a relationship between a radius r.sub.2 of said hub hole B and a radius r.sub.1 from the center of the hub hole B to a front end of a hub claw, and respective lengths of said stopper piece a, b and c, being c<a.ltoreq.b, r.sub.1 .ltoreq.a<r.sub.2, r.sub.1 <b.ltoreq.r.sub.2 and c<r.sub.1 ; angles of .theta..sub.2, .theta..sub.3 and .theta..sub.1 made by said pieces a and b, b and c, and c and a being not multiples of 60.degree. C.; wherein 120.degree.<.theta..sub.2 <180.degree. and .theta..sub.1 +.theta..sub.2 +.theta..sub.3 =360.degree..