Patents by Inventor Munehiro MURAKAMI

Munehiro MURAKAMI 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).

  • Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine
    Patent number: 11724321
    Abstract: Provided is a hole drilling machine and the method for drilling an oval hole and an inner-diameter-changing hole by means of the hole drilling machine, the machine and the method being configured so that the oval hole can be shaped with high accuracy and drilling of a complicated hole such as the inner-diameter-changing hole can be performed with high accuracy. A hole drilling machine 100 includes a spindle 101 and an auxiliary spindle 120 holding both end portions of a processing tool 102 having a cutting blade 103. The spindle 101 includes a spindle drive motor 106 configured to rotatably displace the processing tool 102 on a circular path, and a tool turnable-drive motor 105 configured to spin the processing tool 102. The auxiliary spindle 120 includes an auxiliary spindle drive motor 120b.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: August 15, 2023
    Assignee: ENSHU LIMITED
    Inventors: Munehiro Murakami, Toshio Suzuki, Taketo Nakamura, Kazushige Morozumi, Tatsunori Sato, Yuya Masuda, Daiki Ishizuka
  • HOLE DRILLING MACHINE AND METHOD FOR DRILLING OVAL HOLE AND INNER-DIAMETER-CHANGING HOLE BY MEANS OF HOLE DRILLING MACHINE
    Publication number: 20210402491
    Abstract: Provided is a hole drilling machine and the method for drilling an oval hole and an inner-diameter-changing hole by means of the hole drilling machine, the machine and the method being configured so that the oval hole can be shaped with high accuracy and drilling of a complicated hole such as the inner-diameter-changing hole can be performed with high accuracy. A hole drilling machine 100 includes a spindle 101 and an auxiliary spindle 120 holding both end portions of a processing tool 102 having a cutting blade 103. The spindle 101 includes a spindle drive motor 106 configured to rotatably displace the processing tool 102 on a circular path, and a tool turnable-drive motor 105 configured to spin the processing tool 102. The auxiliary spindle 120 includes an auxiliary spindle drive motor 120b.
    Type: Application
    Filed: September 8, 2021
    Publication date: December 30, 2021
    Inventors: Munehiro MURAKAMI, Toshio SUZUKI, Taketo NAKAMURA, Kazushige MOROZUMI, Tatsunori SATO, Yuya MASUDA, Daiki ISHIZUKA
  • Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine
    Patent number: 11154939
    Abstract: Provided is a hole drilling machine and the method for drilling an oval hole and an inner-diameter-changing hole by means of the hole drilling machine, the machine and the method being configured so that the oval hole can be shaped with high accuracy and drilling of a complicated hole such as the inner-diameter-changing hole can be performed with high accuracy. A hole drilling machine 100 includes a spindle 101 and an auxiliary spindle 120 holding both end portions of a processing tool 102 having a cutting blade 103. The spindle 101 includes a spindle drive motor 106 configured to rotatably displace the processing tool 102 on a circular path, and a tool turnable-drive motor 105 configured to spin the processing tool 102. The auxiliary spindle 120 includes an auxiliary spindle drive motor 120b.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: October 26, 2021
    Assignee: ENSHU LIMITED
    Inventors: Munehiro Murakami, Toshio Suzuki, Taketo Nakamura, Kazushige Morozumi, Tatsunori Sato, Yuya Masuda, Daiki Ishizuka
  • HOLE DRILLING MACHINE AND METHOD FOR DRILLING OVAL HOLE AND INNER-DIAMETER-CHANGING HOLE BY MEANS OF HOLE DRILLING MACHINE
    Publication number: 20210197294
    Abstract: Provided is a hole drilling machine and the method for drilling an oval hole and an inner-diameter-changing hole by means of the hole drilling machine, the machine and the method being configured so that the oval hole can be shaped with high accuracy and drilling of a complicated hole such as the inner-diameter-changing hole can be performed with high accuracy. A hole drilling machine 100 includes a spindle 101 and an auxiliary spindle 120 holding both end portions of a processing tool 102 having a cutting blade 103. The spindle 101 includes a spindle drive motor 106 configured to rotatably displace the processing tool 102 on a circular path, and a tool turnable-drive motor 105 configured to spin the processing tool 102. The auxiliary spindle 120 includes an auxiliary spindle drive motor 120b.
    Type: Application
    Filed: July 2, 2019
    Publication date: July 1, 2021
    Inventors: Munehiro MURAKAMI, Toshio SUZUKI, Taketo NAKAMURA, Kazushige MOROZUMI, Tatsunori SATO, Yuya MASUDA, Daiki ISHIZUKA