Patents by Inventor Kyosuke KAI

Kyosuke KAI 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).

  • Reamer
    Patent number: 11660691
    Abstract: A reamer is rotated about a central axis and has, in a direction along a central axis, a tool front end and a tool rear end that is an end opposite to the tool front end. The reamer includes a blade on a tool front end side. The blade has, on a circumferential surface, a chamfered cutting edge located on the tool front end side, a circumferential cutting edge contiguous to an end of the chamfered cutting edge on a tool rear end side, and a margin that is a surface contiguous to the circumferential cutting edge. The circumferential cutting edge includes a front end portion between a first position and a second position, the first position being an end on a chamfered cutting edge side, the second position having a distance of 1 mm from the first position in a direction of extension of the circumferential cutting edge.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: May 30, 2023
    Assignees: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Tool Net, Inc.
    Inventors: Masashi Yamada, Masaaki Jindai, Jun Okamoto, Futoshi Takeshita, Kyosuke Kai, Katsutoshi Fukuda
  • REAMER
    Publication number: 20220048125
    Abstract: A reamer is rotated about a central axis and has, in a direction along a central axis, a tool front end and a tool rear end that is an end opposite to the tool front end. The reamer includes a blade on a tool front end side. The blade has, on a circumferential surface, a chamfered cutting edge located on the tool front end side, a circumferential cutting edge contiguous to an end of the chamfered cutting edge on a tool rear end side, and a margin that is a surface contiguous to the circumferential cutting edge. The circumferential cutting edge includes a front end portion between a first position and a second position, the first position being an end on a chamfered cutting edge side, the second position having a distance of 1 mm from the first position in a direction of extension of the circumferential cutting edge.
    Type: Application
    Filed: March 10, 2020
    Publication date: February 17, 2022
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Tool Net, Inc.
    Inventors: Masashi YAMADA, Masaaki JINDAI, Jun OKAMOTO, Futoshi TAKESHITA, Kyosuke KAI, Katsutoshi FUKUDA
  • Oil hole reamer
    Patent number: 11198187
    Abstract: An oil hole reamer includes an oil passage extending inside a tool main body along an axis of the tool main body, and an oil hole extending radially outward from the oil passage to an outer circumference of the tool main body. An oil outlet of the oil hole is formed to be open toward a position corresponding to a corner at which a tip cutting edge intersects an outer-circumference cutting edge and to cause at least part of the oil outlet to be open to the outer-circumference flank face.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: December 14, 2021
    Assignees: Sumitomo Electric Tool Net, Inc., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Jun Okamoto, Futoshi Takeshita, Kyosuke Kai, Katsutoshi Fukuda, Masashi Yamada
  • OIL HOLE REAMER
    Publication number: 20210060675
    Abstract: An oil hole reamer includes an oil passage extending inside a tool main body along an axis of the tool main body, and an oil hole extending radially outward from the oil passage to an outer circumference of the tool main body. An oil outlet of the oil hole is formed to be open toward a position corresponding to a corner at which a tip cutting edge intersects an outer-circumference cutting edge and to cause at least part of the oil outlet to be open to the outer-circumference flank face.
    Type: Application
    Filed: October 16, 2019
    Publication date: March 4, 2021
    Applicants: Sumitomo Electric Tool Net, Inc., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Jun OKAMOTO, Futoshi TAKESHITA, Kyosuke KAI, Katsutoshi FUKUDA, Masashi YAMADA