Patents by Inventor Minoru Sentoku

Minoru Sentoku 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).

  • Pulsar ring, magnetizing device and magnetizing method for pulsar ring-use magnetized member, and bearing unit having pulsar ring
    Publication number: 20050231315
    Abstract: A pulsar ring is provided with a ring-shaped supporting member and a magnetized member formed into a strip shape and secured to a circumferential face of the supporting member so that N-poles and S-poles are arranged alternately with equal pitches. The length of the circumferential face of the supporting member is set so as to correspond to the length of the magnetized member so that the end portions of the magnetized member are butted to each other without any gap with the magnetic property in the butted portion being maintained to have equal pitches. The magnetized member is magnetized by a magnetizing device, and then affixed to the supporting member.
    Type: Application
    Filed: June 16, 2005
    Publication date: October 20, 2005
    Applicant: KOYO SEIKO CO., LTD.
    Inventor: Minoru Sentoku
  • Sealed wheel speed detector with rotating magnetic ring and stationary magnetic sensor
    Patent number: 6943542
    Abstract: This wheel speed detector is constructed of a magnetic sensor and a magnetic ring and is integrated with the inside of a seal device. The magnetic ring constitutes a part (core bar) of the seal device. This arrangement can enable the compacting and reduction in the number of components and improve space saving and assembling workability.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: September 13, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Minoru Sentoku, Motoshi Kawamura, Kazutoshi Toda, Nobuyuki Seo, Naoki Morimura, Tomohiro Ishii, Kanichi Kouda, Yoshifumi Shige, Fujio Harumi
  • Compact wheel speed detector capable of saving space and improving workability
    Publication number: 20030205999
    Abstract: This wheel speed detector is constructed of a magnetic sensor and a magnetic ring and is integrated with the inside of a seal device. The magnetic ring constitutes a part (core bar) of the seal device. This arrangement can enable the compacting and reduction in the number of components and improve space saving and assembling workability.
    Type: Application
    Filed: April 30, 2003
    Publication date: November 6, 2003
    Applicant: Koyo Seiko Co., Ltd.
    Inventors: Minoru Sentoku, Motoshi Kawamura, Kazutoshi Toda, Nobuyuki Seo, Naoki Morimura, Tomohiro Ishii, Kanichi Kouda, Yoshifumi Shige, Fujio Harumi
  • Compact wheel speed detector capable of saving space and improving workability
    Patent number: 6605938
    Abstract: This ring speed detector is constructed of a magnetic sensor and a magnetic ring and is integrated with the inside of a seal device. The magnetic ring constitutes a part (core bar) of the seal device. This arrangement can enable the compacting and reduction in the number of components and improve space saving and assembling workability.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: August 12, 2003
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Minoru Sentoku, Motoshi Kawamura, Kazutoshi Toda, Nobuyuki Seo, Naoki Morimura, Tomohiro Ishii, Kanichi Kouda, Yoshifumi Shige, Fujio Harumi
  • Seal ring, sealing apparatus and bearing apparatus
    Publication number: 20030059140
    Abstract: A seal ring has an annular body which is constituted so that a disc section extended to a radially inward direction is overlapped with one end of a cylindrical section, and a sensor member for detecting rotation of an inner ring is provided to an outer periphery of the cylindrical section, and an outer case for covering the sensor member is provided by insert-forming. The outer case contracts after it is formed and is press-contact with the cylindrical section so that a gap is hardly generated.
    Type: Application
    Filed: November 8, 2002
    Publication date: March 27, 2003
    Applicant: Koyo Seiko Co., Ltd.
    Inventors: Kazutoshi Toda, Minoru Sentoku, Hirokazu Arai, Fumiaki Kasahara, Shinichi Obayashi
  • Pulsar ring, magnetizing device and magnetizing method for pulsar ring-use magnetized member, and bearing unit having pulsar ring
    Publication number: 20030048164
    Abstract: A pulsar ring is provided with a ring-shaped supporting member and a magnetized member formed into a strip shape and secured to a circumferential face of the supporting member so that N-poles and S-poles are arranged alternately with equal pitches. The length of the circumferential face of the supporting member is set so as to correspond to the length of the magnetized member so that the end portions of the magnetized member are butted to each other without any gap with the magnetic property in the butted portion being maintained to have equal pitches. The magnetized member is magnetized by a magnetizing device, and then affixed to the supporting member.
    Type: Application
    Filed: September 10, 2002
    Publication date: March 13, 2003
    Applicant: KOYO SEIKO CO., LTD.
    Inventor: Minoru Sentoku
  • Seal ring, sealing device and rolling bearing including the same
    Patent number: 6520683
    Abstract: A seal ring attached to a shoulder portion of a bearing ring of a rolling bearing, and including an annular body, a pulsar ring bonded to a required position of the annular body by vulcanization forming, a first lip made of magnetized rubber and formed integrally with one surface of the pulsar ring and a second lip bonded to the other surface of the pulsar ring by vulcanization molding.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: February 18, 2003
    Assignees: Koyo Seiko Co., Ltd., Koyo Sealing Techno Co., Ltd.
    Inventors: Kazutoshi Toda, Minoru Sentoku, Hirokazu Arai, Fumiaki Kasahara, Tomomitsu Tamura
  • Seal ring, sealing apparatus and bearing apparatus
    Patent number: 6499885
    Abstract: A seal ring has an annular body which is constituted so that a disc section extended to a radially inward direction is overlapped with one end of a cylindrical section, and a sensor member for detecting rotation of an inner ring is provided to an outer periphery of the cylindrical section, and an outer case for covering the sensor member is provided by insert-forming. The outer case contracts after it is formed and is press-contact with the cylindrical section so that a gap is hardly generated.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: December 31, 2002
    Assignees: Koyo Seiko Co., Ltd., Koyo Sealing Techno Co., Ltd.
    Inventors: Kazutoshi Toda, Minoru Sentoku, Hirokazu Arai, Fumiaki Kasahara, Shinichi Obayashi
  • Compact wheel speed detector capable of saving space and improving workability
    Publication number: 20020167305
    Abstract: This wheel speed detector is constructed of a magnetic sensor and a magnetic ring and is integrated with the inside of a seal device. The magnetic ring constitutes a part (core bar) of the seal device. This arrangement can enable the compacting and reduction in the number of components and improve space saving and assembling workability.
    Type: Application
    Filed: July 2, 2002
    Publication date: November 14, 2002
    Applicant: Koyo Seiko Co., Ltd.
    Inventors: Minoru Sentoku, Motoshi Kawamura, Kazutoshi Toda, Nobuyuki Seo, Naoki Morimura, Tomohiro Ishii, Kanichi Kouda, Yoshifumi Shige, Fujio Harumi
  • Seal ring, sealing apparatus and bearing apparatus
    Publication number: 20020018606
    Abstract: A seal ring has an annular body which is constituted so that a disc section extended to a radially inward direction is overlapped with one end of a cylindrical section, and a sensor member for detecting rotation of an inner ring is provided to an outer periphery of the cylindrical section, and an outer case for covering the sensor member is provided by insert-forming. The outer case contracts after it is formed and is press-contact with the cylindrical section so that a gap is hardly generated.
    Type: Application
    Filed: May 30, 2001
    Publication date: February 14, 2002
    Applicant: Koyo Seiko Co., Ltd.
    Inventors: Kazutoshi Toda, Minoru Sentoku, Hirokazu Arai, Fumiaki Kasahara, Shinichi Obayashi
  • Seal ring, sealing device and rolling bearing including the same
    Publication number: 20010051010
    Abstract: A seal ring attached to a shoulder portion of a bearing ring of a rolling bearing, and including an annular body, a pulsar ring bonded to a required position of the annular body by vulcanization forming, a first lip made of magnetized rubber and formed integrally with one surface of the pulsar ring and a second lip bonded to the other surface of the pulsar ring by vulcanization molding.
    Type: Application
    Filed: June 5, 2001
    Publication date: December 13, 2001
    Applicant: Koyo Seiko Co., Ltd
    Inventors: Kazutoshi Toda, Minoru Sentoku, Hirokazu Arai, Fumiaki Kasahara, Tomomitsu Tamura