Patents by Inventor Tomohiko Haruyama

Tomohiko Haruyama 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).

  • Taper roller bearing
    Patent number: 10352358
    Abstract: An annular cage provided with a taper roller bearing includes: a small-diameter annular portion, a large-diameter annular portion, and a plurality of column portions which link the small-diameter annular portion and the large-diameter annular portion to each other, and further includes roller retaining portions which prevent taper rollers accommodated in pockets from falling out to the outer side in the radial direction. Each of the roller retaining portions has a shape of a protruding beam that is a fixed end on the column portion side and on the small-diameter annular portion side, extends in the circumferential direction and in a column portion longitudinal direction, and is a free end on the tip end side in the extending direction.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: July 16, 2019
    Assignee: JTEKT CORPORATION
    Inventors: Shigeo Kamamoto, Junji Murata, Yuki Shishihara, Tomohiko Haruyama
  • TAPER ROLLER BEARING
    Publication number: 20170335886
    Abstract: An annular cage provided with a taper roller bearing includes: a small-diameter annular portion, a large-diameter annular portion, and a plurality of column portions which link the small-diameter annular portion and the large-diameter annular portion to each other, and further includes roller retaining portions which prevent taper rollers accommodated in pockets from falling out to the outer side in the radial direction. Each of the roller retaining portions has a shape of a protruding beam that is a fixed end on the column portion side and on the small-diameter annular portion side, extends in the circumferential direction and in a column portion longitudinal direction, and is a free end on the tip end side in the extending direction.
    Type: Application
    Filed: October 23, 2015
    Publication date: November 23, 2017
    Applicant: JTEKT CORPORATION
    Inventors: Shigeo KAMAMOTO, Junji MURATA, Yuki SHISHIHARA, Tomohiko HARUYAMA
  • Swing internal contact type planetary gear device and rotation drive device
    Patent number: 8475315
    Abstract: An easily structured swing internal contact type planetary gear device is proposed which can achieve a higher meshing ratio when an involute tooth profile is adapted. Each of an internal tooth of an internally toothed gear wheel and an external tooth of an externally toothed gear wheel is formed with an involute tooth profile. Under a driving condition, one of an internal tooth body of the internally toothed gear wheel and an external tooth body of the externally toothed gear wheel is elastically deformed in an extending direction and the other thereof is elastically deformed in a contracting direction so that the number of meshing teeth becomes larger than the number of meshing teeth under a non-driving condition.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: July 2, 2013
    Assignee: JTEKT Corporation
    Inventors: Tsune Kobayashi, Motoyasu Yamamori, Atsushi Ando, Katsuhito Yoshinaga, Hideki Shibata, Akira Saito, Tohru Onozaki, Naomasa Mukaide, Tomohiko Haruyama
  • SWING INTERNAL CONTACT TYPE PLANETARY GEAR DEVICE AND ROTATION DRIVE DEVICE
    Publication number: 20130045827
    Abstract: An easily structured swing internal contact type planetary gear device is proposed which can achieve a higher meshing ratio when an involute tooth profile is adapted. Each of an internal tooth of an internally toothed gear wheel and an external tooth of an externally toothed gear wheel is formed with an involute tooth profile. Under a driving condition, one of an internal tooth body of the internally toothed gear wheel and an external tooth body of the externally toothed gear wheel is elastically deformed in an extending direction and the other thereof is elastically deformed in a contracting direction so that the number of meshing teeth becomes larger than the number of meshing teeth under a non-driving condition.
    Type: Application
    Filed: February 15, 2011
    Publication date: February 21, 2013
    Applicant: JTEKT CORPORATION
    Inventors: Tsune Kobayashi, Motoyasu Yamamori, Atsushi Ando, Katsuhito Yoshinaga, Hideki Shibata, Akira Saito, Tohru Onozaki, Naomasa Mukaide, Tomohiko Haruyama