Patents by Inventor Yukimasa TASHIRO

Yukimasa TASHIRO 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).

  • Rotational force transmission mechanism, turret tool rest, and lathe
    Patent number: 11583932
    Abstract: A rotational force transmission mechanism includes a shaft and an engagement member. The shaft is rotatable about a first axis. The shaft includes a leading end portion having a second groove and a first groove which is configured to receive a rotatable portion of a tool holder so that the shaft rotates the rotatable portion about the first axis. The engagement member is movable along the first axis between a first position and a second position and rotatable about the first axis together with the shaft. The engagement member includes an engagement portion configured to be received in the second groove. At least one of the shaft and the engagement member has an inclined surface that moves the engagement portion in a direction toward the first axis when the engagement member moves from the first position to the second position.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: February 21, 2023
    Assignee: YAMAZAKI MAZAK CORPORATION
    Inventors: Tetsuya Kijima, Yasuhiro Fujii, Yukimasa Tashiro
  • ROTATIONAL FORCE TRANSMISSION MECHANISM, TURRET TOOL REST, AND LATHE
    Publication number: 20210138555
    Abstract: A rotational force transmission mechanism includes a shaft and an engagement member. The shaft is rotatable about a first axis. The shaft includes a leading end portion having a second groove and a first groove which is configured to receive a rotatable portion of a tool holder so that the shaft rotates the rotatable portion about the first axis. The engagement member is movable along the first axis between a first position and a second position and rotatable about the first axis together with the shaft. The engagement member includes an engagement portion configured to be received in the second groove. At least one of the shaft and the engagement member has an inclined surface that moves the engagement portion in a direction toward the first axis when the engagement member moves from the first position to the second position.
    Type: Application
    Filed: January 26, 2021
    Publication date: May 13, 2021
    Applicant: Yamazaki Mazak Corporation
    Inventors: Tetsuya KIJIMA, Yasuhiro FUJII, Yukimasa TASHIRO