Patents by Inventor Ulrich Dahlhaus-Preussler

Ulrich Dahlhaus-Preussler 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: 11131386
    Abstract: A seal includes a supporting ring and at least one sealing ring. The at least one sealing ring has a sheath. The at least one sealing ring and the supporting ring are interconnected. The supporting ring has an outer periphery and is, at least in part, surrounded on the outer periphery by the sheath of the at least one sealing ring in a radial direction. The at least one sealing ring has at least one dynamically loaded sealing lip, which is arranged on a side of the at least one sealing ring facing radially away from the sheath. The at least one sealing ring includes an electrically conductive polymer material. The sheath and the sealing lip transition into one another as one piece.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: September 28, 2021
    Assignee: CARL FREUDENBERG KG
    Inventors: Ulrich Dahlhaus-Preussler, Daniel Froehlich, Ludwig Baer, Pit Wiedemann, Christian Pfeifer
  • Publication number: 20180313449
    Abstract: A seal includes a supporting ring and at least one sealing ring. The at least one sealing ring has a sheath. The at least one sealing ring and the supporting ring are interconnected. The supporting ring has an outer periphery and is, at least in part, surrounded on the outer periphery by the sheath of the at least one sealing ring in a radial direction. The at least one sealing ring has at least one dynamically loaded sealing lip, which is arranged on a side of the at least one sealing ring facing radially away from the sheath. The at least one sealing ring includes an electrically conductive polymer material. The sheath and the sealing lip transition into one another as one piece.
    Type: Application
    Filed: April 25, 2018
    Publication date: November 1, 2018
    Inventors: Ulrich Dahlhaus-Preussler, Daniel Froehlich, Ludwig Baer, Pit Wiedemann, Christian Pfeifer
  • Patent number: 8672007
    Abstract: A sealing arrangement includes a stationary first machine part configured as an axle stub including at least one axial inflow hole adjoining with at least one opening that faces towards an outside surface of the axle stub in a radial direction of the axle stub. A second machine part configured as a container includes a hub rotatably surrounding the axle stub. The hub includes at least one opening that corresponds to the at least one opening of the axle stub in the radial direction so as to form one or more pairs of adjacent openings along an axial direction. A radial seal is disposed between each pair of adjacent openings.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: March 18, 2014
    Assignee: Carl Freudenberg KG
    Inventors: Ulrich Dahlhaus-Preussler, Massimo Barban
  • Patent number: 8646782
    Abstract: A sealing arrangement, comprising a shaft (1) to be sealed, which is enclosed by a radial shaft seal (2), wherein the radial shaft seal (2) comprises two sealing lips (7, 8) for mutually sealing two spaces (5, 6) to be sealed and filled with a medium (3, 4) to be sealed, said sealing lips being disposed axially adjacent to each other at a distance from each other and delimiting a lubricant reservoir (18) with the shaft (1) to be sealed, wherein the first sealing lip (7) is axially curved in the direction of the first space (5) to be sealed in order to seal the first medium (3) to be sealed, and wherein the second sealing lip (8) is axially curved in the direction of the second space (6) to be sealed in order to seal the second medium (4) to be sealed, wherein both sealing lips (7, 8) each have at least one sealing rib (9, 10), which are delimited by mutually intersecting conical surfaces (11, 12; 13, 14), wherein on both sealing ribs (9, 10) the first conical surface (11, 13) facing the first space (5) to be
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: February 11, 2014
    Assignee: Carl Freudenberg KG
    Inventor: Ulrich Dahlhaus-Preussler
  • Publication number: 20110193295
    Abstract: A sealing arrangement includes a stationary first machine part configured as an axle stub including at least one axial inflow hole adjoining with at least one opening that faces towards an outside surface of the axle stub in a radial direction of the axle stub. A second machine part configured as a container includes a hub rotatably surrounding the axle stub. The hub includes at least one opening that corresponds to the at least one opening of the axle stub in the radial direction so as to form one or more pairs of adjacent openings along an axial direction. A radial seal is disposed between each pair of adjacent openings.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 11, 2011
    Applicant: CARL FREUDENBERG KG
    Inventors: Ulrich Dahlhaus-Preussler, Massimo Barban
  • Publication number: 20110018209
    Abstract: A sealing arrangement, comprising a shaft (1) to be sealed, which is enclosed by a radial shaft seal (2), wherein the radial shaft seal (2) comprises two sealing lips (7, 8) for mutually sealing two spaces (5, 6) to be sealed and filled with a medium (3, 4) to be sealed, said sealing lips being disposed axially adjacent to each other at a distance from each other and delimiting a lubricant reservoir (18) with the shaft (1) to be sealed, wherein the first sealing lip (7) is axially curved in the direction of the first space (5) to be sealed in order to seal the first medium (3) to be sealed, and wherein the second sealing lip (8) is axially curved in the direction of the second space (6) to be sealed in order to seal the second medium (4) to be sealed, wherein both sealing lips (7, 8) each have at least one sealing rib (9, 10), which are delimited by mutually intersecting conical surfaces (11, 12; 13, 14), wherein on both sealing ribs (9, 10) the first conical surface (11, 13) facing the first space (5) to be
    Type: Application
    Filed: February 20, 2008
    Publication date: January 27, 2011
    Inventor: Ulrich Dahlhaus-Preussler