Magnetic tape cassette having a sliding closure member that lock

Details Magnetic tape cassette having a sliding closure member that lock Magnetic tape cassette having a sliding closure member that lock

1988-10-11

1990-10-02

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

In container

242198, G11B 2302

Patent

active

049611240

ABSTRACT:
An improved magnetic tape cassette with locking elements for the magnetic tape, through which the opening formed in the front side of the cassette as well as the cut out regions of the winding shaft entry openings are effectively sealed, is characterized in that the slide (15) adjacent to the cassette underside (5) possesses at least two locking catches (21), which move in the grooves (22) of the cassette lower part and which are positioned so that they engage with the toothed rings of the winding hubs (6a,6b) when the slide is in its locked state. Additionally, the slide comprises in the center of its front part a catch, which dips into a groove (25), open forwards as well as downwards, on the outside of the cassette lower part. Through the construction according to the invention, the otherwise customary reel brake together with the prestressing spring becomes superfluous (FIG. 3).

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