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.

Date of Patent:
Dec. 09, 1986

Filed:

Sep. 05, 1984
Applicant:
Inventors:

Kimio Tanaka, Saku, JP;

Haruo Shiba, Komoro, JP;

Yoshiya Sakata, Saku, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G03B / ;
U.S. Cl.
CPC ...
360132 ; 242198 ; 220334 ;
Abstract

In a magnetic tape cassette comprising a cassette housing, a lid pivotally connected to the front of the housing to open and close its front opening, and a lock member fitted in one front side portion of the housing and engageable with and disengageable from the inner surface of the lid, a lock-member-biasing spring is accommodated within the thickness of the lock member, with a free end engaged with the housing. The lock member has means with which to press the both end portions of the spring in place. It has also a bulge formed on its side opposite to the recessed side and which is larger in diameter than a pivot by which the lock member is supported by the housing. The bulge is accommodated within a wall opening of the cassette housing.


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