Rotary transformer for a video cassette recorder having a stator

Details Rotary transformer for a video cassette recorder having a stator Rotary transformer for a video cassette recorder having a stator

1996-12-30

1998-08-11

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

36013024, 336182, G11B 552, G11B 502

Patent

active

057935750

ABSTRACT:
A rotary of a head drum assembly for a VCT in which the structure thereof is simple, thereby facilitating the manufacture thereof, and which can prevent cross-talk of the video signals by forming magnetic conjunctions only between corresponding rotor and stator coils. The rotary transformer comprises a transformer stator having a stator body which is mounted on a lower drum of the head drum assembly and has at least two stator channels formed on a surface thereof, and stator coils respectively wound and attached in the stator channels, and a transformer rotor having rotor bodies which are mounted on an upper drum of the head drum assembly and have recesses formed on opposite surfaces thereof, and rotor coils respectively wound on the rotor bodies, the rotor bodies being substantially I-shaped and being disposed spaced apart from the stator channels by a distance, the rotor coils being electrically connected to magnetic heads respectively. The stator body has an annular disc-shape on a hollow cylindrical shape. The transformer rotor further comprises connecting members, each of which has a flat portion to which a rotor body is attached, a pair of shield portions for shielding magnetic fields, and at least one mounting portion.

REFERENCES:
patent: 4031558 (1977-06-01), Kusaka
patent: 4232922 (1980-11-01), Teass, Jr.
patent: 5359312 (1994-10-01), Choi

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