Magnetic Peripherals Inc.

Sham S Nayar

A balancing apparatus for balancing a high precision magnetic disk drive includes a plate having a circular aperture in which three mounting surfaces grip a precision mounting ring on the disk pack to be balanced. The plate is mounted on a pivoting platform so that the pack can be lowered into the aperture, gripped by the mounting surfaces and then flipped into a horizontal position for balancing such that an operator has access to the disk pack to add balancing weights through the circular aperture.

Apparatus for gripping high density disk packs for precision balancing

Apparatus for assembling a pair of high strength magnets and the common pole piece into a unit for use in a disk drive includes a bed with a channel in which the magnets can slide or translate, and a stop centrally located in the channel to prevent execessive impact between the magnets as they slide under the force of mutual attraction toward each other. A recess in the bottom of the channel below the stop is adapted to receive the pole piece, and the attractive force between the pole piece and the magnets firmly attaches the magnets to the pole piece in the desired location after they have been properly positioned with respect to the pole piece by interaction of the stop and channel walls with the magnets. After the magnets have attached themselves to the pole piece, the assembly can be handled without shifting the magnets on the pole piece to allow further manufacturing processes, say baking in an oven where glue on the surface of the magnets or pole piece can be melted to mechanically bond the assembly together.

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Eagan, MN, United States of America

Sham S Nayar