Magnetic tape scanning unit and method of assembly thereof

Details Magnetic tape scanning unit and method of assembly thereof Magnetic tape scanning unit and method of assembly thereof

1985-04-29

1987-09-08

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head moving during transducing

Tape record

360108, 36013024, G11B 5027, G11B 1560

Patent

active

046928227

ABSTRACT:
A magnetic tape scanning unit comprising at least one stationary and one coaxial rotatable drum seciton (1, 2), and a rotary transformer (14) comprising two transformer discs (15, 16). One of the transformer discs (16) is mounted on rotatable drum section (2) by means of at least three sleeves (21) of weldable material which are open at one end and closed at the opposite end, the closed ends projecting from the drum section, the sleeves being mounted in angularly spaced axially parallel bores therein. Transformer disc (16) is provided with mounting elements having surfaces associated with the sleeves, and the closed ends of the sleeves (21) are welded to the corresponding mounting element surfaces. Assembly of a transformer disc on a drum section is achieved by supporting the drum section and the transformer disc in a jig in which the bottoms of the drum section sleeves are situated opposite and spaced from the associated transformer disc mounting elements. The bottoms of the sleeves are then welded to the mounting element surfaces by means of laser beams which are projected through the open ends of the sleeves.

REFERENCES:
patent: 4031558 (1977-06-01), Kusaka
patent: 4392168 (1983-07-01), Maruyama et al.
patent: 4509084 (1985-04-01), Fujioka et al.

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