Patents by Inventor Hubert Friedrich

Hubert Friedrich 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).

  • Securing element for screw connections and its use
    Patent number: 8425169
    Abstract: Described is a device and method for a securing element for screw connections as an interlayer, between the screw head and supporting material and/or between the nut and supporting material, the basic body of the element consisting of a metallic material, to the top side and underside of which hard material particles are fixed, wherein the hard material particles are fixed by means of a metallic binding phase, the thickness of the metallic binding phase being lower than the mean diameter of the hard material particles, so that the hard material particles project out of the metallic binding phase.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: April 23, 2013
    Assignee: ESK Ceramics GmbH & Co. KG
    Inventors: Daniel Burtsche, Jürgen Meyer, Sven Schreiner, Hubert Friedrich
  • Securing element for screw connections and its use
    Publication number: 20100119326
    Abstract: The invention relates to a securing element for screw connections as an interlayer between the screw head and supporting material and/or between the nut and supporting material, the basic body of the element consisting of a metallic material, to the top side and underside of which hard material particles are fixed, wherein the hard material particles are fixed by means of a metallic binding phase, the thickness of the metallic binding phase being lower than the mean diameter of the hard material particles, so that the hard material particles project out of the metallic binding phase. The invention also relates to the use of a securing element according to the invention for highly loaded, permanent and rereleasable screw connections, the securing element being used as an interlayer between the screw head and supporting material and/or between the nut and supporting material.
    Type: Application
    Filed: November 17, 2008
    Publication date: May 13, 2010
    Applicant: ESK CERAMICS GmbH & Co. KG
    Inventors: Daniel Burtsche, Jurgen Meyer, Sven Schreiner, Hubert Friedrich
  • Seal for intermediate sheet steel of a valve housing for an automatic transmission
    Patent number: 6705594
    Abstract: The hydraulic control device for accommodating electromagnetic actuators and hydraulic valves, which is inserted in an automatic transmission for a motor vehicle, has at least one seal which is made of an aluminum support which has a thickness in the range of from 1 to 2 mm and is coated with a material at least on one side; the material, having a layer thickness in the range of from 100 to 180 &mgr;m, has a hardness in the range of from 20 to 120 Shore A and on its free surface is provided with a profiling having a depth in the range of from 20 to 50 &mgr;m.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: March 16, 2004
    Assignee: ZF Friedrichshafen AG
    Inventors: Georg Gierer, Herbert Kiebler, Hubert Friedrich