Patents by Inventor Darrell Eugene Bratvold

Darrell Eugene Bratvold 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).

  • Structure and enclosure assembly for a disk drive
    Patent number: 6285524
    Abstract: A data storage disk drive is provided with a spindle which supports a plurality of disks having at least one magnetic disk surface to form a spindle assembly for rotation of the disk surfaces about a common axis and a rotary actuator which supports magnetic transducers for movement in unison about respective disk surfaces. The disk drive includes a disk drive enclosure having die-cast generated predetermined zero draft geometries for mounting the spindle motor shaft and the actuator bearing shaft. The enclosure includes a base casting and a cover casting, each casting including structure for locating and retaining electrical connectors used for connecting to a planar electronics card located outside the drive enclosure. The disk drive includes an effective and easily manufacturable electrical path from a flex circuit to an actuator comb. The disk drive includes a tubular chemical breather filter arranged with integral housing and diffusion channels formed in the cover casting.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: September 4, 2001
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey Fred Boigenzahn, Darrell Eugene Bratvold, Dale Clark Goeke, Michael Scott Good, Dale E. Goodman, Richard Edward Lagergren, Gregory Allen Lyons, Brian Lee Rappel, James Michael Rigotti, Lyle Rick Tufty
  • Enclosure assembly for a disk with a locational and retention cast docket structure for a connector and flexible cable connected to an electronics card
    Patent number: 5872678
    Abstract: A data storage disk drive is provided with a spindle which supports at least one disk having at least one magnetic disk surface to form a spindle assembly for rotation of the disk surfaces about a common axis and a rotary actuator which supports at least one magnetic tranducers for movement about respective disk surfaces. The enclosure includes a base casting and a cover casting. The base casting include predetermined registration surfaces for mounting the spindle and the rotary actuator and having a mating face. The cover casting has a mating face for engaging the base mating face to define the disk drive enclosure for enclosing the spindle, the at least one disk surface, the at least one magnetic transducer and the actuator. The mating faces extend along the length of the disk drive enclosure.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: February 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey Fred Boigenzahn, Darrell Eugene Bratvold, Dale C. Goeke, Michael S. Good, Dale E. Goodman, Richard E. Lagergren, Gregory A. Lyons, Brian L. Rappel, James M. Rigotti, Lyle R. Tufty
  • Structure and enclosure assembly for a disk drive
    Patent number: 5872679
    Abstract: A data storage disk drive is provided with a spindle which supports a plurality of disks having at least one magnetic disk surface to form a spindle assembly for rotation of the disk surfaces about a common axis and a rotary actuator which supports magnetic transducers for movement in unison about respective disk surfaces. The disk drive includes a disk drive enclosure having die-cast generated predetermined zero draft geometries for mounting the spindle motor shaft and the actuator bearing shaft. The enclosure includes a base casting and a cover casting, each casting including structure for locating and retaining electrical connectors used for connecting to a planar electronics card located outside the drive enclosure. The disk drive includes an effective and easily manufacturable electrical path from a flex circuit to an actuator comb. The disk drive includes a tubular chemical breather filter arranged with integral housing and diffusion channels formed in the cover casting.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: February 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey Fred Boigenzahn, Darrell Eugene Bratvold, Richard Edward Lagergren, Gregory Allen Lyons, Brian Lee Rappel, James Michael Rigotti, Lyle Rick Tufty