Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1990-12-10
1992-09-29
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 552
Patent
active
051518392
ABSTRACT:
A current transmitting mechanism to be mounted to a magnetic recording and reproducing apparatus having a magnetic head secured to a rotary drum composed of a slip ring, of cylindrical structure, rotatable together with the rotary drum and a brush assembly adapted to contact an outer peripheral surface of the slip ring in an electrically conductive manner for transmitting an electric current signal from the slip ring. The brush assembly consists of a brushing element made of an electrically conductive material contacting the slip ring, a support member for supporting the brushing element at a base portion thereof and an elastic member secured to the brushing element on a side not contacting the slip ring. The brushing element consists of one plate-like brushing member having one surface contacting the outer periphery of the slip ring and the elastic member is secured to another surface of the brush member. The brushing element may also consists of a pair of plate-like members and the elastic member is disposed between the paired brushing members in a sandwiched manner. The brushing element may also consist of a rod-like member made of electrically conductive material and having an outer periphery contacting the slip ring and the elastic member is mounted to surround the base portion of the rod-like member. The current transmitting mechanism may be applicable to a D.C. motor.
REFERENCES:
patent: 3445608 (1969-05-01), Kinjo et al.
patent: 4926273 (1990-05-01), Tabuchi et al.
Pioneer Electronic Corporation
Wolff John H.
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