Patents by Inventor Sabine Hofmann

Sabine Hofmann 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: 10641333
    Abstract: A cage segment for a rolling-element bearing cage includes first and second side elements connected by a bridge extending in a longitudinal direction. A first attaching element on the first side element extends away from the bridge in a first direction parallel to the longitudinal axis and a second attaching element on the second side element extends away from the bridge in a second direction parallel to the longitudinal axis. The first and second attaching elements are configured to receive a wire or cable for connecting the cage segments to other cage segments, and the first attaching element is offset from the longitudinal axis in a first direction by a first distance and the second attaching element is offset from the longitudinal axis in a second direction opposite the first direction by a second distance.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 5, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Sabine Hofmann, Baozhu Liang
  • Patent number: 10619671
    Abstract: A rolling-element bearing cage includes a first side ring and a second side ring connected to the first side ring by a plurality of bridges defining a plurality of pockets configured to receive a rolling-element. The first side ring includes a joint at which the first side ring is configured to be opened to increase a diameter of the first side ring, and the first side ring and the second side ring and the plurality of bridges are made of steel and an outer diameter of the second side ring is greater than 500 mm.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 14, 2020
    Assignee: AKTIEBOLAGET SKF
    Inventors: Berthold Beyfuss, Hans-Juergen Friedrich, Sabine Hofmann, Holger Kristandt, Alfred Radina, Jonas Schierling, Gerhard Wagner
  • Publication number: 20190203772
    Abstract: A cage segment for a rolling-element bearing cage includes first and second side elements connected by a bridge extending in a longitudinal direction. A first attaching element on the first side element extends away from the bridge in a first direction parallel to the longitudinal axis and a second attaching element on the second side element extends away from the bridge in a second direction parallel to the longitudinal axis. The first and second attaching elements are configured to receive a wire or cable for connecting the cage segments to other cage segments, and the first attaching element is offset from the longitudinal axis in a first direction by a first distance and the second attaching element is offset from the longitudinal axis in a second direction opposite the first direction by a second distance.
    Type: Application
    Filed: December 10, 2018
    Publication date: July 4, 2019
    Inventors: Sabine Hofmann, Baozhu Liang
  • Patent number: 10138941
    Abstract: A bearing ring for a rolling-element bearing including an axially extending outer surface, two radially extending side surfaces, an inner surface configured to at least partially contact a rolling element and at least one radially extending recess in the inner surface that is configured to work together with a lifting tool to allow the bearing ring to be lifted by the lifting tool. Also a method of lifting a bearing ring having such a recess.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: November 27, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventors: Sabine Hofmann, Baozhu Liang, Johannes Ullmann
  • Patent number: 9939018
    Abstract: A rolling bearing includes an inner ring, an outer ring, a plurality of rolling elements disposed between the inner ring and the outer ring, and a plurality of cage segments separating circumferentially adjacent ones of the plurality of rolling elements. Each of the cage segments has an axial bridge portion and side plates at axially opposite ends of the bridge portion, each of the side plates having a convex end and a concave end circumferentially spaced from the convex end. The convex end of a first one of the side plates contacts the concave end of a second one of the side plates.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: April 10, 2018
    Assignee: AKTIEBOLAGET SKF
    Inventors: Sabine Hofmann, Baozhu Liang
  • Patent number: 9850948
    Abstract: A rolling-element bearing cage or cage element includes at least one axial bridge region having first and second guide surfaces, the first guide surface and the second guide surface each have a recessed region axially between first and second non-recessed regions, at least one V-shaped receiving space in a radial outer surface of the rolling-element bearing cage or cage element configured to receive lubricant, and first and second fluid channels extending from the at least one receiving space to the recessed regions of the first and second guide surfaces. The fluid channels have rectangular cross sections, are about as wide as a width of the recessed regions, and are angled at an acute angle to a radial direction, and the receiving space is approximately as wide as the recessed regions.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: December 26, 2017
    Assignee: AKTIEBOLAGET SKF
    Inventors: Sabine Hofmann, Baozhu Liang
  • Publication number: 20170328412
    Abstract: A bearing ring for a rolling-element bearing including an axially extending outer surface, two radially extending side surfaces, an inner surface configured to at least partially contact a rolling element and at least one radially extending recess in the inner surface that is configured to work together with a lifting tool to allow the bearing ring to be lifted by the lifting tool. Also a method of lifting a bearing ring having such a recess.
    Type: Application
    Filed: October 27, 2015
    Publication date: November 16, 2017
    Applicant: Aktiebolaget SKF
    Inventors: Sabine Hofmann, Baozhu Liang, Johannes Ullmann
  • Publication number: 20170198752
    Abstract: A rolling bearing includes an inner ring, an outer ring, a plurality of rolling elements disposed between the inner ring and the outer ring, and a plurality of cage segments separating circumferentially adjacent ones of the plurality of rolling elements. Each of the cage segments has an axial bridge portion and side plates at axially opposite ends of the bridge portion, each of the side plates having a convex end and a concave end circumferentially spaced from the convex end. The convex end of a first one of the side plates contacts the concave end of a second one of the side plates.
    Type: Application
    Filed: April 24, 2015
    Publication date: July 13, 2017
    Applicant: Aktiebolaget SKF
    Inventors: Sabine Hofmann, Baozhu Liang
  • Publication number: 20170108044
    Abstract: A rolling-element bearing cage includes a first side ring and a second side ring connected to the first side ring by a plurality of bridges defining a plurality of pockets configured to receive a rolling-element. The first side ring includes a joint at which the first side ring is configured to be opened to increase a diameter of the first side ring, and the first side ring and the second side ring and the plurality of bridges are made of steel and an outer diameter of the second side ring is greater than 500 mm.
    Type: Application
    Filed: March 20, 2015
    Publication date: April 20, 2017
    Applicant: Aktiebolaget SKF
    Inventors: Berthold Beyfuss, Hans-Juergen Friedrich, Sabine Hofmann, Holger Kristandt, Alfred Radina, Jonas Schierling, Gerhard Wagner
  • Publication number: 20170002865
    Abstract: A rolling-element bearing cage or cage element includes at least one axial bridge region having first and second guide surfaces, the first guide surface and the second guide surface each have a recessed region axially between first and second non-recessed regions, at least one V-shaped receiving space in a radial outer surface of the rolling-element bearing cage or cage element configured to receive lubricant, and first and second fluid channels extending from the at least one receiving space to the recessed regions of the first and second guide surfaces. The fluid channels have rectangular cross sections, are about as wide as a width of the recessed regions, and are angled at an acute angle to a radial direction, and the receiving space is approximately as wide as the recessed regions.
    Type: Application
    Filed: December 10, 2014
    Publication date: January 5, 2017
    Applicant: Aktiebolaget SKF
    Inventors: Sabine HOFMANN, Baozhu LIANG
  • Patent number: 9057405
    Abstract: A cage segment for a rolling-element bearing has at least one pocket for a rolling element and is formed by a first segment part and a second segment part. The second segment part abuts the first segment part in an axial direction and is connected to the first segment part by an interference-fit or a friction-fit, or in a materially-bonded manner.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: June 16, 2015
    Assignee: AKTIEBOLAGET SKF
    Inventors: Sabine Hofmann, Baozhu Liang
  • Publication number: 20140050432
    Abstract: A cage segment for a rolling-element bearing has at least one pocket for a rolling element and is formed by a first segment part and a second segment part. The second segment part abuts the first segment part in an axial direction and is connected to the first segment part by an interference-fit or a friction-fit, or in a materially-bonded manner.
    Type: Application
    Filed: January 26, 2012
    Publication date: February 20, 2014
    Inventors: Sabine Hofmann, Baozhu Liang