Patents by Inventor Hukuzo Yagishita

Hukuzo Yagishita 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).

  • Apparatus and method for drilling a work
    Patent number: 8152421
    Abstract: An apparatus for drilling a workpiece has a shaft portion including a holder to hold a drilling tool rotating around a first axis. A reduction gear is connected to the shaft portion. A cylindrical member, including an outer cylinder and an inner cylinder, rotatably contains the shaft portion at an eccentric position. The cylindrical member is connected to the output shaft of the reduction gear and rotated around a second axis parallel to the first axis. A slide containing cylinder contains the shaft portion, the reduction gear and the cylindrical member. The slide containing cylinder has a sliding structure for axially moving the shaft portion, the reduction gear and the cylindrical member. A drilling tool is simultaneously rotated around the first axis, revolved around the second axis and is axially moved.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: April 10, 2012
    Inventor: Hukuzo Yagishita
  • Apparatus And Method For Drilling A Work
    Publication number: 20100067997
    Abstract: An apparatus for drilling a workpiece has a shaft portion including a holder to hold a drilling tool rotating around a first axis. A reduction gear is connected to the shaft portion. A cylindrical member, including an outer cylinder and an inner cylinder, rotatably contains the shaft portion at an eccentric position. The cylindrical member is connected to the output shaft of the reduction gear and rotated around a second axis parallel to the first axis. A slide containing cylinder contains the shaft portion, the reduction gear and the cylindrical member. The slide containing cylinder has a sliding structure for axially moving the shaft portion, the reduction gear and the cylindrical member. A drilling tool is simultaneously rotated around the first axis, revolved around the second axis and is axially moved.
    Type: Application
    Filed: November 18, 2009
    Publication date: March 18, 2010
    Applicant: Hamamatsu Foundation for Science and Technology Foundation
    Inventor: Hukuzo Yagishita
  • Ultrasonic Vibration Cutting Method and a Fiber Reinforced Plastic Member Manufactured by the Method
    Publication number: 20080292860
    Abstract: An ultrasonic vibration cutting method for drilling a workpiece using a drill applied to the workpiece. Ultrasonic torsional mode vibration in its rotational direction is applied to the drill. The workpiece is a fiber reinforced plastic member including carbon fibers as its reinforcing fibers. The drilling by the drill, with the ultrasonic torsional mode vibration in its rotational direction, provides a drilled surface that is substantially smooth.
    Type: Application
    Filed: May 23, 2008
    Publication date: November 27, 2008
    Applicant: Hamamatsu Foundation for Science and Technology Promotion
    Inventor: Hukuzo Yagishita
  • Apparatus and method for drilling a work
    Patent number: RE45948
    Abstract: An apparatus for drilling a workpiece has a shaft portion including a holder to hold a drilling tool rotating around a first axis. A reduction gear is connected to the shaft portion. A cylindrical member, including an outer cylinder and an inner cylinder, rotatably contains the shaft portion at an eccentric position. The cylindrical member is connected to the output shaft of the reduction gear and rotated around a second axis parallel to the first axis. A slide containing cylinder contains the shaft portion, the reduction gear and the cylindrical member. The slide containing cylinder has a sliding structure for axially moving the shaft portion, the reduction gear and the cylindrical member. A drilling tool is simultaneously rotated around the first axis, revolved around the second axis and is axially moved.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: March 29, 2016
    Assignees: OSG Corporation
    Inventor: Hukuzo Yagishita