Patents by Inventor Frank C. Bumb, Jr.

Frank C. Bumb, Jr. 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).

  • Patent number: 5321570
    Abstract: A track means defined by magnetic recording media on a substrate, the media along the track means having two levels, one for recording of data, and the other for recording of servo information, wherein recorded magnetic transitions at the second level define the servo information, the transitions arrayed along the track means as groups of converging lines which extend in crosswise or spanwise relation to multiple tracks. The data is recorded without any wasted magnetic space between tracks (zero guardband) using alternating angles (azimuthal) of magnetic orientation so that they do not interfere with each other when read. The read bead cores or gaps may be "oriented" to read recorded data transitions extending at different angles relative to track length direction.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: June 14, 1994
    Inventors: Michael I. Behr, Frank C. Bumb, Jr.
  • Patent number: 5293281
    Abstract: A track means defined by magnetic recording media on a substrate, the media along the track means having two levels, one for recording of data, and the other for recording of servo information, wherein recorded magnetic transitions at the second level define the servo information, the transitions arrayed along the track means as groups of converging lines which extend in crosswise or spanwise relation to multiple tracks. The data is recorded without any wasted magnetic space between tracks (zero guardband) using alternating angles (azimuthal) of magnetic orientation so that they do not interfere with each other when read. The read head cores or gaps may be "oriented" to read recorded data transitions extending at different angles relative to track length direction.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: March 8, 1994
    Inventors: Michael I. Behr, Frank C. Bumb, Jr.
  • Patent number: 5223994
    Abstract: Magnetic head structure is operated to record both servo magnetic transitions, and data magnetic transitions, in magnetic media, the servo transitions buried relative to the data transitions, the servo transitions recorded along bands and the data transitions recorded along side-by-side tracks, the bands being wider than the data tracks, the data transitions having lateral lengths greater than track width. The magnetic head structure typically employs multiple magnetic flux servo write gaps, including a leading first gap extending at one angle .alpha. and a trailing second gap extending at an angle .beta., relative to the direction of travel of the media past the head structure, the first and second flux gaps spaced and positioned to span multiple of the data tracks.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: June 29, 1993
    Inventors: Michael I. Behr, Frank C. Bumb, Jr.
  • Patent number: 5132861
    Abstract: A track means defined by magnetic recording media on a substrate, the media along the track means having two levels, one for recording of data, and the other for recording of servo information, wherein recorded magnetic transitions at the second level define the servo information, the transitions arrayed along the track means as groups of converging lines which extend in crosswise or spanwise relation to multiple tracks. The data is recorded without any wasted magnetic space between tracks (zero guardband) using alternating angles (azimuthal) of magnetic orientation so that they do not interfere with each other when read. The read head cores or gaps may be "oriented" to read recorded data transitions extending at different angles relative to track length direction.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: July 21, 1992
    Inventors: Michael I. Behr, Frank C. Bumb, Jr.