Patents by Inventor Keiji Tomimatsu

Keiji Tomimatsu 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).

  • Attachment for machine tool
    Patent number: 8007213
    Abstract: When a horizontal shaft and a piston are caused to travel to a first side with a gear coupling engaging, the revolution of the piston is designed to be restricted by meshing a spur gear with an internal gear fixed to a main body of a horizontal swivel part. On the other hand, when the horizontal shaft and the piston are caused to travel to a second side and the gear coupling thus disengages, the horizontal shaft and the piston are designed to be revolved in an integrated manner by meshing spur gears respectively with other spur gears. When the horizontal shaft and the piston travel from the first side to the second side, the spur gear is designed to be spaced away from the internal gear after the spur gear meshes with the spur gear.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: August 30, 2011
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Mutsumi Yoshikawa, Takayuki Kume, Keiji Tomimatsu, Hiroyuki Yamamura, Isamu Takehana
  • Attachment for machine tool
    Publication number: 20080199270
    Abstract: When a horizontal shaft and a piston are caused to travel to a first side with a gear coupling engaging, the revolution of the piston is designed to be restricted by meshing a spur gear with an internal gear fixed to a main body of a horizontal swivel part. On the other hand, when the horizontal shaft and the piston are caused to travel to a second side and the gear coupling thus disengages, the horizontal shaft and the piston are designed to be revolved in an integrated manner by meshing spur gears respectively with other spur gears. When the horizontal shaft and the piston travel from the first side to the second side, the spur gear is designed to be spaced away from the internal gear after the spur gear meshes with the spur gear.
    Type: Application
    Filed: December 12, 2007
    Publication date: August 21, 2008
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Mutsumi Yoshikawa, Takayuki Kume, Keiji Tomimatsu, Hiroyuki Yamamura, Isamu Takehana