Patents by Inventor Joachim Lutterbeck

Joachim Lutterbeck 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).

  • Resilient sealing ring
    Patent number: 4990251
    Abstract: Resilient sealing rings are disclosed including an annular ring of resilient material having a cross-sectional configuration so that when not compressed the cross section of the sealing ring extends substantially longitudinally and when compressed between two parallel sealing surfaces the sealing ring bends so that the longitudinal ends approach each other. This provides acceptable compression force between the parallel sealing surfaces over an extended range of deformation particularly as compared to conventional O-rings.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: February 5, 1991
    Assignee: Gambro Dialystoren GmbH & Co. KG
    Inventors: Kurt Spranger, Roland Antoni, Joachim Lutterbeck, Gerd Ott, Herbert Raabe, Josef Volm