G - Physics – 11 – B
Patent
G - Physics
11
B
352/31.1
G11B 23/087 (2006.01)
Patent
CA 1208778
18 ABSTRACT: In a tape cassette having two flanged tape spools (14 and 15) arranged for rotation about parallel axes (12 and 13) in the cassette housing (1), a brake device 33 is provided for preventing rotation of the spools in a direc- tion to unwind the tape (16) when the cassette is removed from a recording apparatus, and also for tensioning the tape between the spools. The brake device comprises two pawls (35 and 36) carried on a spring-loaded sliding mount (34) and arranged to cooperate one with ratchet teeth on the upper flange (10) of one spool and the other with ratchet teeth on the lower flange (18) of the other spool, the teeth on the two flanges being orientated in opposite directions about the rotational axes of the spools, viewed from the same side of the spools. To facilitate assembly of the cassette, ratchet teeth are provided on both flanges of each spool, with the teeth on one flange orientated in the opposite direction to the teeth on the other flange. Thus, each spool can be placed in the housing with either of its flanges uppermost, and the two spools can be inter- changed without having to be inverted.
442816
N.v.philips'gloeilampenfabrieken
Van Steinburg C.e.
LandOfFree
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