Patents by Inventor Harry Tankus

Harry Tankus 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).

  • Elastic positive drive bellows seal
    Patent number: 4103904
    Abstract: This specification discloses a mechanical bellows seal in which torsional forces acting upon the bellows unit are opposed and minimized by a circumferential biasing device. Through appropriate structure, the biasing means constrains the opposite ends of the bellows for joint rotation, minimizing vibrational forces and slip-stick phenomenon of such seals in highly viscous fluid sealing environments.
    Type: Grant
    Filed: September 7, 1977
    Date of Patent: August 1, 1978
    Assignee: Crane Packing Co.
    Inventor: Harry Tankus