Patents by Inventor Hans-Juergen Friedrich

Hans-Juergen 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).

  • Publication number: 20100329599
    Abstract: A roller bearing cage includes the following features: The cage comprises an annular circumferential element, from which bridge elements branch off, roller bodies of the roller bearing being disposable between the bridge elements, the circumferential element comprises a plurality of uniform section elements, and the initially-loose section elements and bridge elements are connected with each other to form the cage.
    Type: Application
    Filed: October 30, 2008
    Publication date: December 30, 2010
    Inventors: Berthold Beyfuss, Hans-Jürgen Friedrich, Alfred Radina, Jonas Schierling
  • Publication number: 20100129022
    Abstract: A rolling bearing cage has at least U-shaped limited pockets for rolling bodies. In the rolling cage, the U-shaped delimitation of one of the pockets is configured by the bonded connection of two web elements on an annular circumferential element, the circumferential element is free of cavities and penetrations for a complete connection to sections of the web elements, and the elements are configured to have a shape adapted to each other for placing the elements in the intended position for the bonded connection such that the positions of the web elements on the circumferential element is predetermined in the circumferential direction and/or in the axial direction of the circumferential element.
    Type: Application
    Filed: April 25, 2008
    Publication date: May 27, 2010
    Applicant: AB SKF
    Inventors: Berthold Beyfuss, Hans-Jürgen Friedrich, Fred Fuchs, Alfred Radina, Jonas Schierling
  • Patent number: 7103974
    Abstract: A process for mounting an outer bearing ring involves press fitting a stamp into the outer ring so that the inner peripheral surface of the outer ring assumes the shape of the stamp. Using the stamp, the outer ring is then press fitted into the recess of a machine part so that the contour of the external peripheral surface of the outer ring is plastically molded through axial stretching into the machine part. To mount an inner ring, a stamp with a bore is press fitted onto the inner ring so that the inner peripheral surface of the inner ring pressing against the stamp assumes the shape of the bore of the stamp. Using the stamp, the inner ring is then press fitted onto the machine part and the contour of the inner peripheral surface of the inner ring is plastically molded through axial flow forming into the machine part.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: September 12, 2006
    Assignee: SKF GmbH
    Inventors: Manfred Brandenstein, Hans-Jürgen Friedrich, Hubert Herbst, Peter Horling
  • Patent number: 6979132
    Abstract: A cylindrical roller bearing includes an outer bearing ring, an inner bearing ring and cylindrical rollers located between the outer and inner bearing rings. One of the rings has side rims forming an axial stop for the cylindrical rollers. The bearing ring on which the side rims are not provided is formed with at least one groove outside the axial extension of the cylindrical rollers. A ring of spring-elastic material is positioned in the groove to form an axial stop for the cylindrical rollers. The periphery of the ring has no interruptions. To improve the running behavior of the cylindrical roller bearing, the ring possesses a V-shaped cross-section with two legs.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: December 27, 2005
    Assignee: AB SKF
    Inventors: Hans-Jürgen Friedrich, Bernhard Groschek, Torbjörn Hedman, Rut Heemskerk, Jürgen Stürzengerger, Alfred Weidinger
  • Patent number: 6579012
    Abstract: A bearing ring includes a first ring part having a first peripheral surface forming a rolling body retaining track or a sliding surface and a second peripheral surface, and a concentrically arranged second ring part having first and second peripheral surfaces. The first and second ring parts are pressed together to plastically mold the second peripheral surface of the first ring part into the first peripheral surface of the second ring part through axial expansion. During manufacture, one tool grasps the first peripheral surface of the first ring part and presses it into a pre-determinable shape and another tool supports the second peripheral surface of the second ring part. The first ring part is pressed against the second ring part, with the contour of the second peripheral surface of the first ring part being plastically molded into the first peripheral surface of the second ring part through axial flow forming.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: June 17, 2003
    Assignee: SKF GmbH
    Inventors: Manfred Brandenstein, Hans-Jürgen Friedrich, Hubert Herbst, Peter Horling
  • Patent number: 6279231
    Abstract: A method for securing the outer ring of the bearing in a runner shell wherein the radius of an edge defining the seat for the bearing varies in a predetermined manner around its circumference, the steps comprising, positioning an outer ring of the bearing in the seat of the runner shell so that the edge of the runner shell overlies a circumferentially extending seating groove in the outer ring, placing a die having a forming face in engagement with the peripheral edge of the runner shell, and deforming by means of a die, the edge of the runner shell seat in a manner to displace essentially the same material around the circumference of the edge into the bearing groove, thereby producing a generally uniform force on the bearing ring around the circumference of the ring which eliminates distortion thereof.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: August 28, 2001
    Assignee: SKF GmbH
    Inventors: Berthold Beyfuss, Hans-Juergen Friedrich, Peter Horling