Dynamic magnetic information storage or retrieval – Head – Head accessory
Patent
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.
Itou Tetsuo
Iwakura Masao
Masuoka Nobuo
Osada Toshio
Takeda Hidekazu
Garcia Alfonso
Hitachi , Ltd.
Hitachi Video Engineering Inc.
Psitos Aristotelis
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