Patents by Inventor Kazuo Ichimura

Kazuo Ichimura 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).

  • Electrically-operated chuck opening-closing device
    Patent number: 7647855
    Abstract: An electrically-operated chuck opening-closing device includes a chuck that grasps workpiece, a conversion device with a control gear provided to the outer circumference, a drawbar that couples the conversion device and the chuck, a transmission gear provided to a main spindle, a second rotary shaft rotatably pivoted to be parallel to the main spindle, a first gear and a second gear rotatably provided on the second rotary shaft, an auxiliary motor that drives the first gear, a first clutch that can couple and decouple the auxiliary motor and the second rotary shaft, and a second clutch that can couple and decouple the second rotary shaft and the second gear.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: January 19, 2010
    Assignee: Okuma Corporation
    Inventor: Kazuo Ichimura
  • ELECTRICALLY-OPERATED CHUCK OPENING-CLOSING DEVICE
    Publication number: 20080073862
    Abstract: An electrically-operated chuck opening-closing device includes a chuck that grasps workpiece, a conversion device with a control gear provided to the outer circumference, a drawbar that couples the conversion device and the chuck, a transmission gear provided to a main spindle, a second rotary shaft rotatably pivoted to be parallel to the main spindle, a first gear and a second gear rotatably provided on the second rotary shaft, an auxiliary motor that drives the first gear, a first clutch that can couple and decouple the auxiliary motor and the second rotary shaft, and a second clutch that can couple and decouple the second rotary shaft and the second gear.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 27, 2008
    Applicant: Okuma Corporation
    Inventor: Kazuo ICHIMURA