Patents by Inventor Hartmut Treiber

Hartmut Treiber 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).

  • Lip seal ring with improved sealing bond
    Patent number: 5127497
    Abstract: A lip seal ring for circumferentially contacting and sealing a shaft movable relative to the lip seal ring includes an elastomer ring having a sealing lip and an adhering face and a stiffening ring made of a deformation-resistant material. The stiffening ring is bonded to the elastomer ring at the adhering face. The stiffening ring is made of a phenolic resin, a polyamide resin or a polyimide resin. The elastomer ring is made of an oil-resistant elastomer based on a nitrile-butadiene rubber or a derivative thereof, and polyethylene or polypropylene.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: July 7, 1992
    Assignee: Goetze AG
    Inventors: Horst F. Struckmeyer, Hartmut Treiber, Siegfried Pietsch, Wilhelm Liethen