Rotary head device having a motor within the rotary drum, and ma

Details Rotary head device having a motor within the rotary drum, and ma Rotary head device having a motor within the rotary drum, and ma

1990-01-26

1992-06-02

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Head

Head accessory

360 84, 36013022, 360109, 360 87, G11B 1560, G11B 5027

Patent

active

051192578

ABSTRACT:
A rotary head device having a rotary drum and a rotating motor within the rotary drum, with the stator of the motor being supported by a fixed arm attached to a fixed drum or to a fixed drum supporting member. The construction permits the manufacture of the rotary head device using the manufacturing equipment used for conventional rotary shaft type rotary head devices despite the rotary head device being a thin device. In this rotary head device the position of contact of a ground brush and a rotor can be set at the center of rotation or thereabouts, so despite it being a thin device, the sliding speed of the ground brush is low, and hence it is possible to prevent the abrasion of the ground brush and also to prevent increase of the rotative driving torque.

REFERENCES:
patent: 4603359 (1986-07-01), Narasawa et al.
patent: 4623944 (1986-11-01), Yamashita
patent: 4740848 (1988-04-01), Schild et al.
patent: 4891726 (1990-01-01), Suwa et al.

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