Patents by Inventor Klaus Rubner

Klaus Rubner 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: 6779267
    Abstract: A method for increasing the wear-resistance of a work piece involves connecting the work piece to a non-formable core material having a greater hardness than that of the work piece material. In order to improve the connection while simultaneously reducing the costs, the core material is connected in a form-fitting manner to the work piece by means of cold extrusion or hot extrusion of the work piece material.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: August 24, 2004
    Assignees: GeramTec AG Innovative Ceramic Engineering, UKM Umformtechnik und Kraftfahrzeugkomponenten MeiBen GmbH
    Inventors: Gerd Meier, Carsten Rubner, Klaus Rubner, Peter Stingl, Helmut Radke, Steffen Tempel, Dietmar Leuteritz
  • Patent number: 5275377
    Abstract: A valve disk of silicon-infiltrated silicon carbide material for control elements for regulating liquid flows is suitable in particular for service-water mixer valves. The silicon carbide material contains 70 to 90% by weight of silicon carbide and 8 to 30% by weight of silicon with a content of most 0.2%, by weight of free carbon and contains at most 0.1% by volume of closed pores. The valve disk has a functional surface having the optical appearance in the form of isolated islands of bearing surfaces surrounded by a level lying lever with respect to the isolated islands, the functional surface having the following microtopographical characteristics over its entire region: R.sub.a : 0.02 to 0.80 .mu.m, preferably 0.15 to 0.40 .mu.m; R.sub.t : 0.50 to 6.00 .mu.m,; R.sub.z : 0.20 to 100 .mu.m: flatness: 0.0002 to 0.01 mm; t.sub.pi : 40 to 80% (at 0.3 .mu.m cut depth); t.sub.pa : 10 to 60% (at 0.3 .mu.m cut depth). The invention also relates to a process for producing the valve disk.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: January 4, 1994
    Assignee: Hoechst CeramTec Aktiengesellschaft
    Inventor: Klaus Rubner