Patents by Inventor Michael Brunke

Michael Brunke 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).

  • Shaft seal with lip lifting in response to shaft rotation and gas pressure
    Patent number: 4565378
    Abstract: Apparatus for effecting a seal between a rotary shaft and its enclosure includes a sealing element having an elastic lip portion coupled to the shaft for rotation therewith and a sealing portion associated with the enclosure, the elastic lip portion forming a contact seal with the sealing portion when the shaft is stationary or rotating slowly. The elastic lip portion tends to lift from the sealing portion to form a non-contact seal upon a predeterminable increase in the rate of shaft rotation. Compressed gas is introduced into a region between the rotary elastic lip portion and the sealing portion to form a gas cushion therebetween to facilitate lifting of the elastic lip portion.
    Type: Grant
    Filed: December 17, 1984
    Date of Patent: January 21, 1986
    Assignee: GMN Georg Muller Nurnberg GmbH
    Inventors: Heinz Wehrfritz, Michael Brunke