International Business Machines Corporation

Arthur P Brende

Richard W Luoma

Jerry Lee Neubauer

A mechanical lock which serves to hold a transducer carriage in a fixed position at all times except when the storage disk is rotating at a speed sufficient to ensure that the transducers are flying at a height sufficient to avoid damage to the disk surface. The lock is disengaged by means of a solenoid and armature.

Automatic lock for head-carriage assembly in a disk file

The magnetic head actuator includes a substantially totally enclosed self-shielding voice coil linear motor which includes a continuous, cylindrical permanent magnet of flexible material which is sealed against the inner cylindrical wall of the outer core by a flared copper sleeve that also serves as a non-magnetic, conductive shorted turn to reduce instantaneous inductance of the drive coil. An annular reluctance gap in the outer core provides symmetrical distribution of the permanent magnet flux.

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Byron, MN, United States of America

Arthur P Brende