Patents by Inventor Hirohide Ishida

Hirohide Ishida 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).

  • Manufacturing method of an outer ring for a bearing unit
    Patent number: 8341844
    Abstract: With respect to an outer ring 2b in which a diameter DB1 of a first outer ring raceway 10c is greater than a diameter DB2 of a second outer ring raceway 10b (DB1>DB2), a method is realized which facilitates the entry of a grinding tool 12 into an inner side of the outer ring when these both outer ring raceways 10c and 10b are subjected to a grinding process. The grinding tool 12 is made to enter the inner side of the outer ring 2b through an opening on a side close to the first outer ring raceway 10c.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: January 1, 2013
    Assignee: NSK Ltd.
    Inventors: Shigemi Tsukamoto, Katsuyuki Kawamura, Hirohide Ishida, Tatsuo Wakabayashi
  • Hub unit for driving wheel
    Patent number: 7959358
    Abstract: A sensor for detecting a speed of rotation is an active sensor, a sensing portion 35 of the sensor directly faces the magnetic encoder 10 without interposition between it and the encoder 10, and a harness 34 (or connector) of the sensor 30 for detecting the speed of rotation is taken out of a gap between a knuckle N and a constant velocity universal joint 9.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: June 14, 2011
    Assignee: NSK Ltd.
    Inventors: Yuji Nakamura, Hirohide Ishida, Junshi Sakamoto, Toshiaki Maeda
  • MANUFACTURING METHOD OF AN OUTER RING FOR A BEARING UNIT
    Publication number: 20090199404
    Abstract: With respect to an outer ring 2b in which a diameter DB1 of a first outer ring raceway 10c is greater than a diameter of a second outer ring raceway 10b (DB1>DB2), a method is realized which facilitates the entry of a grinding tool 12 into an inner side of the outer ring when these both outer ring raceways 10c and 10b are subjected to a grinding process. As shown in (A) to (B), the grinding tool 12 is made to enter the inner side of the outer ring 2b through an opening on a side close to the first outer ring raceway 10c between the openings at both ends of this outer ring 2b. This resolves the above-described problem.
    Type: Application
    Filed: April 24, 2007
    Publication date: August 13, 2009
    Applicant: NSK LTD.
    Inventors: Shigemi Tsukamoto, Katsuyuki Kawamura, Hirohide Ishida, Tatsuo Wakabayashi
  • Hub Unit for Driving Wheel
    Publication number: 20070278851
    Abstract: A sensor for detecting a speed of rotation is an active sensor, a sensing portion 35 of the sensor directly faces the magnetic encoder 10 without interposition between it and the encoder 10, and a harness 34 (or connector) of the sensor 30 for detecting the speed of rotation is taken out of a gap between a knuckle N and a constant velocity universal joint 9.
    Type: Application
    Filed: October 1, 2004
    Publication date: December 6, 2007
    Inventors: Yuji Nakamura, Hirohide Ishida, Junshi Sakamoto, Toshiaki Maeda
  • Wheel-support rolling bearing unit and a method manufacturing the same
    Patent number: 6928737
    Abstract: A cylindrical portion 10 is not quenched, and its hardness of a cylindrical portion 10 is set at Hv200 to 300. An average cross sectional area of the crystal particle in this portion is set to be within 0.03 mm2. Accordingly, when a caulking portion is formed by expanding the cylindrical portion 10b to an inner ring 3 to a hub 2b made of carbon steel, cracks or the like are not formed in the resultant caulking portion.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: August 16, 2005
    Assignee: NSK Ltd.
    Inventors: Hirohide Ishida, Hiroya Miyazaki
  • Wheel-support rolling bearing unit and a method manufacturing the same
    Publication number: 20030002763
    Abstract: A cylindrical portion 10 is not quenched, and its hardness of a cylindrical portion 10 is set at Hv200 to 300. An average cross sectional area of the crystal particle in this portion is set to be within 0.03 mm2. Accordingly, when a caulking portion is formed by expanding the cylindrical portion 10b to an inner ring 3 to a hub 2b made of carbon steel, cracks or the like are not formed in the resultant caulking portion.
    Type: Application
    Filed: August 16, 2002
    Publication date: January 2, 2003
    Applicant: NSK LTD.
    Inventors: Hirohide Ishida, Hiroya Miyazaki
  • Wheel-support rolling bearing unit and a method manufacturing the same
    Patent number: 6478471
    Abstract: A cylindrical portion 10 is not quenched, and its hardness of a cylindrical portion 10 is set at Hv200 to 300. An average cross sectional area of the crystal particle in this portion is set to be within 0.3 mm2. Accordingly, when a caulking portion is formed by expanding the cylindrical portion 10b to an inner ring 3 to a hub 2b made of carbon steel, cracks or the like are not formed in the resultant caulking portion.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: November 12, 2002
    Assignee: NSK Ltd.
    Inventors: Hirohide Ishida, Hiroya Miyazaki
  • Wheel-support rolling bearing unit and a method manufacturing the same
    Publication number: 20020012486
    Abstract: A cylindrical portion 10 is not quenched, and its hardness of a cylindrical portion 10 is set at Hv200 to 300. An average cross sectional area of the crystal particle in this portion is set to be within 0.03 mm2. Accordingly, when a caulking portion is formed by expanding the cylindrical portion 10b to an inner ring 3 to a hub 2b made of carbon steel, cracks or the like are not formed in the resultant caulking portion.
    Type: Application
    Filed: December 18, 2000
    Publication date: January 31, 2002
    Inventors: Hirohide Ishida, Hiroya Miyazaki