Read Rite Corporation

Logitech, Inc.

Resonex, Inc.

Harry Ray Duer

Oleg A Gergel

Mostafa Mahmoudian

Jagdeep S Buttar

Patrick A Weber

Victor Rudman

Elliot Viches

Mohammad Ali-Safai

Paul Huang

An apparatus for testing magnetic heads that interact with magnetic disks includes a translational slide and a rotatable arm mounted to one end of the slide. The translational slide moves the rotatable arm in a longitudinal direction parallel to the surface of a magnetic disk. The arm rotates the magnetic head to different positions relative to data tracks on the disk. A second translational slide moves the magnetic head vertically above the disk to adjust the vertical position of the head. The three movements of the head, (1)horizontally across the disk, (2)rotationally by the arm, and (3)vertically relative to the disk surface are controlled by servomechanisms. A read/write amplifier circuit is connected to the head under test. The test apparatus is controlled by a computer that interfaces with circuitry connected to the servomechanisms.

Apparatus and method for testing magnetic disk drive components

Apparatus and method for testing magnetic heads using translational

A rigid cylindrical roller for use in portable optical scanners. The roller includes a thinned midsection and a plurality of grooves. A plurality of compressible, surface gripping rings are fitted onto the plurality of grooves. Each surface gripping ring is held relatively immobile with respect to one another as well as to the roller. In one embodiment, the roller, the grooves, and the compressible rings are dimensioned such that in use, the surface-gripping rings are compressed inside the grooves at the points of rolling contact, permitting both the roller and the rings to come into contact with the scanned surface.

Roller for optical scanner

Magnetic resonance imaging apparatus having a structure with an opening adapted to receive an object to be imaged. An object platform is provided which is sized so that it can be moved into the opening in the magnet structure. Structure is provided for supporting the platform and for moving the platform along x, y and z axes.

Magnetic resonance imaging apparatus and three-axis patient positioning

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Boulder Creek, CA, United States of America

Harry Ray Duer