Head drum assembly

Details Head drum assembly Head drum assembly

1996-12-30

1998-04-14

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 1561

Patent

active

057399859

ABSTRACT:
A head drum assembly has an upper drum having at least two video heads at an outer bottom portion thereof, and a rotor transformer at an inner bottom portion of the upper drum. A lower drum is formed on a boss and has a cylindrical shape with the same diameter as that of the upper drum. The lower drum is positioned under the upper drum. The boss is formed by bending a deck upwardly. A lead line for leading a magnetic tape is formed on the outer periphery of the lower drum. A stator transformer corresponding to the rotor transformer is positioned on a main PCB. A shaft is integrally formed on a main chassis and is installed in the center portion of the upper drum. A motor for rotating the upper drum relative to the shaft is provided. The manufacturing and the structure of the head drum assembly is simple.

REFERENCES:
patent: 4930030 (1990-05-01), Yabu et al.
patent: 4972283 (1990-11-01), Kim
patent: 5363263 (1994-11-01), Ohji et al.
patent: 5392180 (1995-02-01), Hasegawa

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