Patents by Inventor Tsutomu KAJI

Tsutomu KAJI 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).

  • Dividing wall for primary pulley in belt-type continuously variable transmission
    Patent number: 11125306
    Abstract: The present invention relates to relates to an improvement of a dividing wall for a primary pulley in a belt-type continuously variable transmission. It is an object of the present invention to obtain a desired strength characteristic without performing a soft nitriding treatment and achieve cost reduction. A hydraulic pressure chamber is formed between the dividing wall and the movable sheave, and the dividing wall comprises a small-diameter annular disc portion 32 extended from the central cylinder portion 30, which is attached to a rotational shaft, in a radial direction. In the small-diameter annular disc portion 32, a connecting portion which is connected to an intermediate body portion 34 is a bent portion 38 which is bent at substantially 90 [deg].
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: September 21, 2021
    Assignee: UNIPRES CORPORATION
    Inventors: Nobuhiko Furuya, Masamichi Miwa, Toshiyuki Ichikawa, Katsuyo Fukumoto, Yosuke Sugisawa, Tsutomu Kaji
  • DIVIDING WALL FOR PRIMARY PULLEY IN BELT-TYPE CONTINUOUSLY VARIABLE TRANSMISSION
    Publication number: 20190346026
    Abstract: The present invention relates to relates to an improvement of a dividing wall for a primary pulley in a belt-type continuously variable transmission. It is an object of the present invention to obtain a desired strength characteristic without performing a soft nitriding treatment and achieve cost reduction. A hydraulic pressure chamber is formed between the dividing wall and the movable sheave, and the dividing wall comprises a small-diameter annular disc portion 32 extended from the central cylinder portion 30, which is attached to a rotational shaft, in a radial direction. In the small-diameter annular disc portion 32, a connecting portion which is connected to an intermediate body portion 34 is a bent portion 38 which is bent at substantially 90 [deg].
    Type: Application
    Filed: February 8, 2018
    Publication date: November 14, 2019
    Applicant: UNIPRES CORPORATION
    Inventors: Nobuhiko FURUYA, Masamichi MIWA, Toshiyuki ICHIKAWA, Katsuyo FUKUMOTO, Yosuke SUGISAWA, Tsutomu KAJI