Patents by Inventor Frederick W. Hahn, Jr.

Frederick W. Hahn, 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).

  • Magnetic tape transport with slotted rotating head
    Patent number: 3961372
    Abstract: A rotating head magnetic tape transport wherein a helical wrap of flexible magnetic tape is formed about a stationary tubular mandrel and a rotatable headwheel which carries a slotted head of generally spherical flying contour.This rotating head includes a generally spherical surface profile to insure that the head flies with close microinch adjacency to a length of magnetic recording tape. The head's spherical profile includes two parallel airflow slots which extend in the direction of head movement. A uniform, stable, hydrodynamic air film is developed over a relatively large area, generally centered on the head's transducing gap.
    Type: Grant
    Filed: July 5, 1974
    Date of Patent: June 1, 1976
    Assignee: International Business Machines Corporation
    Inventors: George W. Brock, Frederick W. Hahn, Jr.