Precision bearing for reciprocating a magnetic head

Details Precision bearing for reciprocating a magnetic head Precision bearing for reciprocating a magnetic head

1984-05-29

1986-09-02

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360104, G11B 555, G11B 2108

Patent

active

046099581

ABSTRACT:
A magnetic head is attached to a hollow carriage which surrounds a hollow cylindrical positioner post rigidly secured at one end to a frame element of a tape drive. Precision ball bearings mounted to the carriage engage the outer surface of the cylindrical positioner post at longitudinally and circumferentially spaced locations. A positioner shaft extends through the positioner post and a tracking nut in one end of the carriage is screwed over a threaded segment of the shaft. A pin extends from the carriage and is longitudinally slidable in a recess in an anti-rotation block mounted on the frame element. A stepper motor can drive the shaft to reciprocate the carriage toward and away from the frame element thereby moving the head traversely with respect to a length of magnetic tape. An adjustable stop on the post limits movement of the carriage toward the frame element.

REFERENCES:
patent: 3721967 (1973-03-01), Englert et al.
patent: 3737880 (1973-06-01), Kelley
patent: 3969768 (1976-07-01), Ebbing
patent: 4006372 (1977-02-01), Brown, Jr. et al.
patent: 4261222 (1981-04-01), Dattilo
patent: 4315290 (1982-02-01), Kukreja
patent: 4393425 (1983-07-01), Wright
patent: 4427905 (1984-01-01), Sutton
patent: 4468712 (1984-08-01), Mueller et al.
A. M. Guzman and T. N. Waller, Voice Coil Motor, Oct. 1977, IBM Technical Disclosure Bulletin, vol. 20, No. 5.

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