Rotary drum device

Details Rotary drum device Rotary drum device

1991-10-24

1994-03-15

Westin, Edward P.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

310239, 310242, G11B 2104, H01K 3938

Patent

active

052950336

ABSTRACT:
A rotary drum device includes a brush unit for supplying a signal or a current to a rotary portion. The rotary drum device has a guide portion along which the brush unit can move such that a contact force of a brush at the contacting point between the rotary portion and the brush can be maintained substantially constant.

REFERENCES:
patent: 4539500 (1985-09-01), Houben et al.
patent: 4602181 (1986-07-01), Dietrich et al.
patent: 4851935 (1989-07-01), Ohyama
patent: 4926273 (1990-05-01), Tabuchi et al.
patent: 5019741 (1991-05-01), Fukui
patent: 5151839 (1992-09-01), Ota

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