Patents by Inventor David C. Behr

David C. Behr 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: 5074451
    Abstract: A tape guide having improved durability and excellent tape tracking characteristics. In one aspect, the present invention concerns a tape guide that comprises a durable, polymeric, resiliently expandable, substantially cylindrical sleeve. An outer tape guiding surface on said sleeve is concave for biasing a magnetic recording tape toward a centered position on the outer tape guiding surface. An inner surface on the sleeve defines a central bore that is smaller in size than the tape guide post. The central bore, though, is of a sufficient size such that the tape guide can be resiliently expanded to fit over a tape guide post with a resilient, gripping effect. A thickened wall portion is circumferentially positioned on the inner surface in a centered position between the top end and the bottom end of the sleeve. In a preferred embodiment, the sleeve has two opposing slot edges that define a slot along the axial direction of the sleeve. The slot edges are biased towards each other.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: December 24, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Dale T. Tollefson, David C. Behr, Bruce L. Nelson