Magnetic tape cassette with magnetic tape protective closure...

Details Magnetic tape cassette with magnetic tape protective closure... Magnetic tape cassette with magnetic tape protective closure...

G - Physics

11

B

352/31.1

G11B 23/087 (2006.01)

Patent

CA 1276294

ABSTRACT OF THE DISCLOSURE A magnetic tape cassette has a front end opening adjoining an underside cutout formed in the bottom of a cassette casing. The underside cut-out is openably covered by a sliding shutter member. A torsion spring is employed for biasing the sliding shutter member toward its closed position. The torsion spring is secured to the sliding shutter member and has an extension abutting around the lateral center portion of the inner surface of the cassette casing so as to bias the sliding shutter member frontwardly toward the closed position. The torsion spring thus provides an improved appearance and better productability with simplified mounting structure therefor.

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