Patents by Inventor Hiroshi NEGI

Hiroshi NEGI 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).

  • Screw driving device, injection device and injection molding machine
    Patent number: 11759987
    Abstract: A screw driving device includes: a plasticization motor; a rotation drive shaft provided coaxially with a screw and configured to rotate the screw; and a transmission mechanism configured to decelerate rotation of the plasticization motor and transmit the rotation to the rotation drive shaft. The transmission mechanism includes: a speed reducer whose output shaft is coupled to the rotation drive shaft; a drive rotation member provided in the plasticization motor; a driven rotation member provided on an input shaft of the speed reducer; and one endless string-shaped force transmission member wound around the drive rotation member and the driven rotation member.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: September 19, 2023
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventor: Hiroshi Negi
  • SCREW DRIVING DEVICE, INJECTION DEVICE AND INJECTION MOLDING MACHINE
    Publication number: 20220258395
    Abstract: A screw driving device includes: a plasticization motor; a rotation drive shaft provided coaxially with a screw and configured to rotate the screw; and a transmission mechanism configured to decelerate rotation of the plasticization motor and transmit the rotation to the rotation drive shaft. The transmission mechanism includes: a speed reducer whose output shaft is coupled to the rotation drive shaft; a drive rotation member provided in the plasticization motor; a driven rotation member provided on an input shaft of the speed reducer; and one endless string-shaped force transmission member wound around the drive rotation member and the driven rotation member.
    Type: Application
    Filed: February 16, 2022
    Publication date: August 18, 2022
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventor: Hiroshi NEGI