Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Patent
1997-01-23
1998-04-21
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Tape record
G11B 1544
Patent
active
057424470
ABSTRACT:
The invention relates to a switching device in an auto-reverse deck for a magnetic-tape-cassette apparatus, comprising a drive mechanism which is pivotable in a pivoting range between a first and a second reel-disc wheel (51, 52), by means of which drive mechanism the first reel-disc wheel (51) is drivable in a first operating position of the switching device for a first tape-transport direction and the second reel-disc wheel (52) is drivable in a second operating position of the switching device for a second tape-transport direction, the drive mechanism acting upon a movably supported actuating lever (5) during the pivotal movement between the two operating positions and a pivotal lever (44) being provided which carries a pivotal wheel (50), and the pivotal lever (44) being coupled to an intermediate wheel (41), particularly by means of a friction coupling (45), which intermediate wheel meshes with the pivotal wheel (50). In order to enable switching over with a high power in a larger angular range, the actuating lever (5) has teeth (11) which are engageable with the pivotal wheel (50) mounted on the pivotal lever (44) of the pivotable drive mechanism, a pivotably supported armature lever (15) has been provided whose pivotal movement is controlled by the movement of the actuating lever (5), the pivoting pivotal lever (44) engages against a stop edge (17, 18) of the armature lever (15) in the central part of the pivoting range, so that subsequently, owing to the engagement of the pivotal lever (44) against the stop edge (17, 18) of the armature lever (15), meshing forces are transmitted to the teeth (11) of the actuating lever (5) by means of the intermediate wheel (41) and the pivotal wheel (50), as a result of which said actuating lever is pivoted.
REFERENCES:
patent: 4564873 (1986-01-01), Hashimoto et al.
patent: 5062014 (1991-10-01), Yoshimura
patent: 5144507 (1992-09-01), Kurita
patent: 5581431 (1996-12-01), D'Alayer de Costemore D'Arc
Koch Stefan
Kunze Norbert
Belk Michael E.
U.S. Philips Corporation
Wolff John H.
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