Apparatus for adjusting a gap between transformers in a tape rec

Details Apparatus for adjusting a gap between transformers in a tape rec Apparatus for adjusting a gap between transformers in a tape rec

1995-08-04

1998-02-03

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head moving during transducing

Tape record

G11B 548

Patent

active

057151121

ABSTRACT:
The head drum assembly for use in a tape recorder comprises a rotating shaft divided arbitrarily into an upper and a lower parts, a rotary drum pressed in and fixed to the upper part of the rotating shaft, the rotary drum having a protruding cylindrical portion with its center coinciding with that of the rotating shaft, a stationary drum attached at the lower part of the rotating shaft through a plurality of bearings, the stationary drum being hollowed out thereby being provided with an inside bottom surface, the stationary drum further including a bottom surfaces, a rotary transformer bonded to the protruding cylindrical portion, a stationary transformer fixed to and installed on inside bottom surface of the stationary drum, the rotary transformer and the stationary transformer being aligned and separated by a gap, and a transferrer for adjusting the gap between the rotary transformer and the stationary transformer. The transferrer includes a set screw and a feed ring with a matching tapped hole and is located at the bottom surface of the stationary drum and the top of the set screw is in a physical contact with the bottom of the rotating shaft in such a way that the rotary drum is moved vertically by turning the set screw, thereby allowing the gap between the rotary transformer and the stationary transformer to be adjusted.

REFERENCES:
patent: 4603359 (1986-07-01), Narasawa et al.

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