Patents by Inventor Walter E. Weresin

Walter E. Weresin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording
    Patent number: 7978430
    Abstract: A method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording. A reverse air bearing surface head for perpendicular recording is provided with an inversed bevel shape to handle skew when recording data on a magnetic recording medium.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: July 12, 2011
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Quang Le, James L. Nix, Aron Pentek, Walter E. Weresin, Mason L. Williams
  • Method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording
    Patent number: 7296338
    Abstract: A method and apparatus for providing a reverse air bearing surface head with trailing shield design for perpendicular recording. A reverse air bearing surface head for perpendicular recording is provided with an inversed bevel shape to handle skew when recording data on a magnetic recording medium.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: November 20, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Quang Le, James L. Nix, Aron Pentek, Walter E. Weresin, Mason L. Williams, III
  • Method and apparatus for in-situ measurement of head/recording medium clearance
    Patent number: 4777544
    Abstract: A method and apparatus for measuring the flying height of a slider supporting a magnetic transducer in-situ in a direct manner in an operational magnetic disk storage system. The method and apparatus produce relative motion between the magnetic transducer and a magnetic recording medium at a first velocity so that the resulting air bearing positions the magnetic transducer slider at a first flying height from the magnetic medium. A single signal of constant periodicity is written over a predetermined area of the recording medium by the magnetic transducer, and a readback signal is sensed from the predetermined area of the recording medium to produce a first signal. The flying height of the magnetic transducer slider is lowered to substantially zero, and a readback signal is sensed at the lowered flying height to produce a second signal. The first flying height is then calculated as the ratio, expressed in decibels, of the first and second signals times the wavelength divided by a constant.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: October 11, 1988
    Assignee: International Business Machine Corporation
    Inventors: Byron R. Brown, Hung L. Hu, Klaas B. Klaassen, Joseph J. Lum, Jacobus C. L. Van Peppen, Walter E. Weresin