Patents by Inventor Thomas William Glaser

Thomas William Glaser 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).

  • Method and apparatus for positioning transducers to correct for read and write element misregistration offsets which vary dependent on rotary actuator angular position across a disk medium
    Patent number: 5682274
    Abstract: An apparatus and method for correcting for track misregistration when a slider or head assembly contains a separate read element and write element. The offset is determined at a first position and at a second position of the actuator arm assembly. From these offsets a constant and a multiplier are determined for determining an offset as a function of the cylinder location. Also disclosed is a method and apparatus for minimizing distance traveled to prevent misregistration when repositioning between the read element and a write element. The read element is intentionally offset from the write element at an angle so as to minimize the distance traveled across the disk.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: October 28, 1997
    Assignee: International Business Machines Corporation
    Inventors: Dana Henry Brown, Earl Albert Cunningham, Kevin Jack Erickson, Richard Hunt Estry, Thomas William Glaser, Mark David Hagen, Hal Hjalmar Ottesen, Dean Curtis Palmer, John Jeffrey Stephenson