Reel braking device for a magnetic-tape cassette

Details Reel braking device for a magnetic-tape cassette Reel braking device for a magnetic-tape cassette

1983-12-05

1986-08-19

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

242198, 242199, G11B 2302

Patent

active

046073078

ABSTRACT:
In a tape cassette having two flanged tape reels or spools arranged for rotation about parallel axes, when the cassette is removed from a tape recorder a brake device prevents rotation of the spools in a direction which will unwind the tape, and also tensions the tape. To facilitate assembly of the cassette, ratchet teeth are provided on both flanges of each spool, with the teeth on one flange oriented in a direction opposite to the teeth on the other flange. The spools are identical and can be interchanged, and each spool can be placed in the housing with either of its flanges uppermost. The brake device is symmetrical about an axis of symmetry, and has one pawl arranged to engage teeth on one spool upper flange, and the other pawl arranged to engage the other spool lower flange.

REFERENCES:
patent: 3807840 (1974-04-01), Cook et al.
patent: 4288048 (1981-09-01), Sieben
patent: 4473202 (1984-09-01), Verhoeven
patent: 4484248 (1984-11-01), Ogiro

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