Magnetic head positioning apparatus
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United States of America Patent
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-
May 24, 1988
Grant Date -
N/A
app pub date -
Apr 7, 1986
filing date -
Apr 7, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic read/write head is mounted on a carriage having a semi-circular recess therein. A threaded lead screw is partially surrounded by the recess. A partial nut having an arcuate front surface with two male thread segments thereon engages the lead screw. The partial nut is supported on the carriage so that rotation of the screw causes movement of the carriage relative to the screw, in a direction parallel to the longitudinal axis of the screw. The partial nut is biased into engagement with the screw by a coil spring which extends between the partial nut and a cap which is spaced from the rear surface of the partial nut. The spring applies a constant, predetermined force on the partial nut. The direction of the spring force is substantially parallel to the longitudinal axis of the spring. Thus, the head can be precisely positioned by the rotation of the lead screw. Also disclosed is a method of positioning the magnetic head.
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