Patents by Inventor Helmut Prulamp

Helmut Prulamp 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).

  • Braking mechanism, as for a tape recorder
    Patent number: 4310131
    Abstract: A braking mechanism for a tape transportable in opposite directions between two winding hubs, to prevent development of slack. Each hub has an associated brake disc and band, opposite ends of each brake band being connected to arms on different pivotal levers at different lever arm distances, interconnected so that unwinding braking forces are larger than winding braking forces.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: January 12, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Horst Althuber, Helmut Prulamp