Patents by Inventor Mitsumasa Ozeki

Mitsumasa Ozeki 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).

  • Cross joint
    Publication number: 20070077869
    Abstract: In a cross joint outwardly fitting a bearing cup to each of four pieces of shafts of a cross shaft member via a cylindrical member, race portions formed on a side of the cross shaft member and on a side of the bearing cup and a shoulder portion provided between respectives of neck portions of two of the shafts of the cross shaft member contiguous to each other are subjected to roller burnishing.
    Type: Application
    Filed: December 6, 2006
    Publication date: April 5, 2007
    Applicant: Koyo Seiko Co., Ltd.
    Inventors: Nobuo Komeyama, Mitsumasa Ozeki
  • Cross shaft joint
    Patent number: 7192356
    Abstract: A cross shaft joint tiltably coupling two shaft members each other includes: a cross shaft which includes four shaft portions and is arranged between the two shaft members; outer ring cups rotatably provided to the four shaft portions, respectively, the outer ring cups being adapted to be coupled to corresponding shaft members; and an attachment portion to which a balance weight for balancing the outer ring cups can be attached is formed on at least one of the outer ring cups.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: March 20, 2007
    Assignees: Koyo Seiko Co., Ltd., Koyo Machine Industries Co., Ltd.
    Inventors: Nobuo Komeyama, Mitsumasa Ozeki
  • Cross joint
    Patent number: 7163461
    Abstract: In a cross joint (1) outwardly fitting a bearing cup (outer ring member 4) to each of four pieces of shafts 2b of a cross shaft member (2) via a cylindrical member (rolling member 3), race portions (2c, 4a) formed on a side of the cross shaft member (2) and on a side of the bearing cup (4) and a shoulder portion (2d) provided between respectives of neck portions of two of the shafts (2b) of the cross shaft member (2) contiguous to each other are subjected to roller burnishing.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: January 16, 2007
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Nobuo Komeyama, Mitsumasa Ozeki
  • Cross shaft joint
    Publication number: 20040185943
    Abstract: A cross shaft joint tiltably coupling two shaft members each other includes: a cross shaft which includes four shaft portions and is arranged between the two shaft members; outer ring cups rotatably provided to the four shaft portions, respectively, the outer ring cups being adapted to be coupled to corresponding shaft members; and an attachment portion to which a balance weight for balancing the outer ring cups can be attached is formed on at least one of the outer ring cups.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 23, 2004
    Applicants: Koyo Seiko Co., Ltd., Koyo Machine Industries Co., Ltd.
    Inventors: Nobuo Komeyama, Mitsumasa Ozeki
  • Cross joint
    Publication number: 20040053700
    Abstract: In a cross joint (1) outwardly fitting a bearing cup (outer ring member 4) to each of four pieces of shafts 2b of a cross shaft member (2) via a cylindrical member (rolling member 3), race portions (2c, 4a) formed on a side of the cross shaft member (2) and on a side of the bearing cup (4) and a shoulder portion (2d) provided between respectives of neck portions of two of the shafts (2b) of the cross shaft member (2) contiguous to each other are subjected to roller burnishing.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 18, 2004
    Applicant: Koyo Seiko Co., Ltd.
    Inventors: Nobuo Komeyama, Mitsumasa Ozeki