Patents by Inventor Daniel James Pedersen

Daniel James Pedersen 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: 4084116
    Abstract: During a search operation in a rotating magnetic head tape transport, the tape is transported from a supply spool via guides and a vacuum column past the rotating head read/write station to a take-up spool. As the tape is wound onto the take-up spool in layer-by-layer convolutions, air is entrapped between the layers. The entrapped air forms a layer of air film and as a result the tape is loosely wound on the take-up spool. A "Hard Step" voltage is generated and is applied to the capstan motor at the end of the search operation to tighten any loose wraps caused by the air entrapment during the search.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: April 11, 1978
    Assignee: International Business Machines Corporation
    Inventors: Nelson Kay Arter, Clarence Howard Hammond, Daniel James Pedersen, Marvin Edward Prahl