Patents by Inventor Patrick Ullmann

Patrick Ullmann 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: 8585299
    Abstract: A bearing arrangement is provided having a shaft (1) with a bearing journal (2, 3), and a needle bearing (9) which is arranged thereon and has a cage (16) and needle rollers (11) accommodated in the latter. The bearing journal is provided with a hardened and precision-machined inner raceway (10) for the needle rollers and steps back radially in relation to axial shoulders (12, 13) of adjacent shaft sections (4, 5, 6, 7), and the axial shoulders serve as run-on surfaces for the axial end sides (14, 15) of the cage fitted between the axial shoulders. In this case, relief grooves (17, 18) are provided, with the relief grooves extending on both sides of the inner raceway and each being dimensioned in such a manner that, over the entire circumferential region of the axial shoulders, the axial distance (D) thereof from each other is significantly larger than the inner raceway width (B1) existing therebetween.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: November 19, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan Hess, Peter Solfrank, Patrick Ullmann, Alexander Kern
  • Patent number: 8210018
    Abstract: A method of making a compensation shaft (1) out of a drop-forged shaft blank (11) is provided. The compensation shaft includes a shaft section (5) with a base body (16) and a rib (15) with a height H starting from the base body. The method includes separating the forging ridges (14) formed in the die (9, 10) by trimming the forged shaft blank into a shape close to the final contour of the base body at trimming points, with the distance S2 between these trimming points being substantially smaller than the distance S1 between the forging ridges prior to separation.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: July 3, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Solfrank, Stefan Hess, Patrick Ullmann, Alexander Kern
  • Patent number: 8191527
    Abstract: A compensation shaft for a multi-cylinder engine at least two bearing pegs and at least four unbalanced weight sections, two of the at least four unbalanced weight sections being arranged respectively, around each of the at least two bearing pegs, so that at least two units are formed, these at least two units being connected to each other by a connecting part, wherein two of the unbalanced weight sections are arranged asymmetrically around each of the two bearing pegs, and the connecting part is configured as a flexurally rigid and torsion-proof component.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: June 5, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Peter Solfrank, Patrick Ullmann
  • Publication number: 20120045159
    Abstract: A bearing arrangement is provided having a shaft (1) with a bearing journal (2, 3), and a needle bearing (9) which is arranged thereon and has a cage (16) and needle rollers (11) accommodated in the latter. The bearing journal is provided with a hardened and precision-machined inner raceway (10) for the needle rollers and steps back radially in relation to axial shoulders (12, 13) of adjacent shaft sections (4, 5, 6, 7), and the axial shoulders serve as run-on surfaces for the axial end sides (14, 15) of the cage fitted between the axial shoulders.
    Type: Application
    Filed: May 28, 2010
    Publication date: February 23, 2012
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Stefan Hess, Peter Solfrank, Patrick Ullmann, Alexander Kern
  • Publication number: 20110135230
    Abstract: A radial roller bearing, which has an outer bearing ring and a multiplicity of cylindrical roller bodies which roll on the inner lateral surface of the outer bearing ring and the outer lateral surface of an inner bearing ring or a shaft. The roller bodies are held at uniform intervals by a bearing cage with inwardly directed radial rims for axial guidance. Lubricating openings, which lead from the outside into the bearing interior, supply lubricant, and are arranged on the outer or inner bearing ring axially at both sides. The lubricating openings are cutouts which are formed into one or both axial sides of the bearing rings, outside a load zone of the bearing rings, which extend into the outer or inner raceway of the roller bodies and in which the roller bodies are arranged so as to be partially freely accessible for receiving oil form the bearing surroundings.
    Type: Application
    Filed: December 8, 2010
    Publication date: June 9, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Peter SOLFRANK, Joachim SEITZ, Patrick ULLMANN
  • Publication number: 20110030444
    Abstract: A method of making a compensation shaft (1) out of a drop-forged shaft blank (11) is provided. The compensation shaft includes a shaft section (5) with a base body (16) and a rib (15) with a height H starting from the base body. The method includes separating the forging ridges (14) formed in the die (9, 10) by trimming the forged shaft blank into a shape close to the final contour of the base body at trimming points, with the distance S2 between these trimming points being substantially smaller than the distance S1 between the forging ridges prior to separation.
    Type: Application
    Filed: August 4, 2010
    Publication date: February 10, 2011
    Applicant: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
    Inventors: Peter Solfrank, Stefan Hess, Patrick Ullmann, Alexander Kern
  • Publication number: 20090205602
    Abstract: A compensation shaft for a multi-cylinder engine at least two bearing pegs and at least four unbalanced weight sections, two of the at least four unbalanced weight sections being arranged respectively, around each of the at least two bearing pegs, so that at least two units are formed, these at least two units being connected to each other by a connecting part, wherein two of the unbalanced weight sections are arranged asymmetrically around each of the two bearing pegs, and the connecting part is configured as a flexurally rigid and torsion-proof component.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 20, 2009
    Inventors: Peter Solfrank, Patrick Ullmann