Patents by Inventor Rolf Pfoh

Rolf Pfoh 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).

  • Patent number: 4624887
    Abstract: A sheet material for sliding surface bearings comprises an expanded metal mesh which consists of a wrought aluminum alloy and is coated with a mixture of polytetrafluoroethylene, filler and glass fibers. The bond strength is increased by coating the surface of the expanded metal mesh with a primer layer.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: November 25, 1986
    Assignee: Kolbenschmidt AG
    Inventors: Wolfgang Bickle, Rolf Pfoh, Karl Becker
  • Patent number: 4394275
    Abstract: A composite material for sliding surface bearings comprises a gacking shell of steel, which is covered by a bearing metal layer of sintered porour bronze having a porosity of 25 to 45%. The voids of the bronze layer are filled with a fluorocarbon-lead mixture. The bearing metal layer is covered by an anti-friction layer consisting of the fluorocarbon-lead mixture in a thickness of, for example, 30 to 500 microns.To permit of a machining of the anti-friction layer the bronze layer has a thickness of 250 to 350 microns and a porosity of 25 to 45% and the fluorocarbon-lead mixture comprises 30 to 60% by weight polyvinylidene fluorinde and 20 to 50% by weight lead.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: July 19, 1983
    Assignee: Karl Schmidt GMBH
    Inventors: Wolfgang Bickle, Rolf Funke, Rolf Pfoh