Patents by Inventor Hirofumi KOSHIJI

Hirofumi KOSHIJI 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).

  • Vehicle continuously variable transmission equipped with seal mechanism
    Patent number: 9970516
    Abstract: A vehicle continuously transmission mechanism includes a seal mechanism to seal a hydraulic chamber defined by fixed and movable members on a back surface side of a movable sheave of a pulley or seal an oil passage communicating with the hydraulic chamber. This seal mechanism has an annular seal member normally brought into intimate contact with an opposing surface of the sliding contact part and a lip seal member formed with an annular lip such that a tip end of the annular lip is directed toward the outside and a side surface of the annular lip located closer to the hydraulic chamber or oil passage is brought into elastic contact with the opposing surface of the sliding contact part.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: May 15, 2018
    Assignee: JATCO Ltd
    Inventors: Yoichi Tsuji, Takayuki Suzuki, Hirofumi Koshiji, Kouichi Katou, Katsuyuki Umezawa
  • VEHICLE CONTINUOUSLY VARIABLE TRANSMISSION EQUIPPED WITH SEAL MECHANISM
    Publication number: 20170152924
    Abstract: A vehicle continuously transmission mechanism includes a seal mechanism to seal a hydraulic chamber defined by fixed and movable members on a back surface side of a movable sheave of a pulley or seal an oil passage communicating with the hydraulic chamber. This seal mechanism has an annular seal member normally brought into intimate contact with an opposing surface of the sliding contact part and a lip seal member formed with an annular lip such that a tip end of the annular lip is directed toward the outside and a side surface of the annular lip located closer to the hydraulic chamber or oil passage is brought into elastic contact with the opposing surface of the sliding contact part.
    Type: Application
    Filed: March 13, 2015
    Publication date: June 1, 2017
    Applicant: JATCO Ltd
    Inventors: Yoichi TSUJI, Takayuki SUZUKI, Hirofumi KOSHIJI, Kouichi KATOU, Katsuyuki UMEZAWA