Patents by Inventor Lars Stigsjöö

Lars Stigsjöö 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: 20160201720
    Abstract: A double-row spherical roller bearing, comprising an outer ring including at least one spherical inner raceway on a radially inner peripheral surface, an inner ring including a first and second axial end and at least one outer raceway on a radially outer peripheral surface. Spherical roller elements are located in first and second roller rows interposed in-between the inner and outer raceways. A first flange is located at the first axial end, extending in a circumferential direction of the outer peripheral surface. The inner ring is subjected to an axial load in a first axial direction wherein the first flange approaches the first roller row. An axial extension of the first flange extends without contacting any first roller row roller elements during bearing operation, when an axial load is acting on the inner ring in the first axial direction. The bearing can be integrated into a wind turbine.
    Type: Application
    Filed: January 6, 2016
    Publication date: July 14, 2016
    Applicant: Aktiebolaget SKF
    Inventors: Emma BJORKMAN, Peter JAMES, Marcus LOOF, Lars STIGSJÖÖ
  • Publication number: 20160178002
    Abstract: A double-row spherical roller bearing, comprising: an outer ring having an radially inner spherical raceway and a radially outer peripheral surface, an inner ring having a radially outer curved-shaped raceway, and roller elements arranged in two axially displaced rows. The outer ring includes an outer peripheral surface first circumferential groove. The first circumferential groove has an axial outer peripheral surface width X fulfilling the following relation: L1?X?L2, L2 extends between first end point (intersecting the first normal vector and the outer peripheral surface) and second outer peripheral surface axial end points (intersecting a second normal vector and the outer peripheral surface). The first normal vector is an inverted normal vector of the outer raceway. The second normal vector is an inverted normal vector of the inner raceway. L1 has a length of L2*?. End points of L1 are located equidistant to each respective first and second end point of L2.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 23, 2016
    Applicant: Aktiebolaget SKF
    Inventors: Emma BJORKMAN, Peter JAMES, Marcus LOOF, Lars Stigsjöö
  • Publication number: 20160178001
    Abstract: A double-row spherical roller bearing comprising an outer ring which presents a first and a second spherical raceway on a radially inner peripheral surface, an inner ring which presents a first and a second outer curved-shaped raceway. Moreover, roller elements are arranged in a first and second roller row being axially displaced from each other, and arranged in-between the respective first and second inner raceways of the outer ring and the first and second outer raceways of the inner ring. The outer ring includes a first groove on the radially inner peripheral surface located in-between the first and second inner raceways, extending radially outwardly and in the circumferential direction of the ring. The first and second inner raceways have hard turned surfaces. The first groove presents a hardened surface which has not undergone any post-hardening machining operation. The double-row spherical roller bearing can be a wind turbine bearing arrangement.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 23, 2016
    Applicant: Aktiebolaget SKF
    Inventors: Emma BJORKMAN, Peter JAMES, Marcus LOOF, Lars STIGSJÖÖ
  • Patent number: 9234546
    Abstract: A large sealed self aligning roller bearing including a first race ring, a second race ring, rolling bodies arranged between the first race ring and the second race ring in one or more rows and a built-in sealing member. The sealing member includes an annular plate ring with a first periphery portion and a second periphery portion. The first ring includes a mounting groove for receiving the first periphery portion and the second race ring includes a sealing surface.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: January 12, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Bengt Engström, Lars Stigsjöö, Pär Strand
  • Publication number: 20150110431
    Abstract: A large sealed self aligning roller bearing including a first race ring, a second race ring, rolling bodies arranged between the first race ring and the second race ring in one or more rows and a built-in sealing member. The sealing member includes an annular plate ring with a first periphery portion and a second periphery portion. The first ring includes a mounting groove for receiving the first periphery portion and the second race ring includes a sealing surface.
    Type: Application
    Filed: December 10, 2012
    Publication date: April 23, 2015
    Inventors: Bengt Engstrom, Lars Stigsjoo, Par Strand