Patents by Inventor Daichi KUBO

Daichi KUBO 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).

  • Cylinder cover and method of improving corrosion resistance thereof
    Patent number: 11674472
    Abstract: A method of improving corrosion resistance of a cylinder cover including a port that is an intake port or an exhaust port. The cylinder cover is configured such that an annular cooling water passage is formed between an inner peripheral surface of the port and a valve seat ring when the valve seat ring is inserted in the port. The method includes forming a weld overlay layer on each of sealed regions of the inner peripheral surface of the port by laser metal deposition using a welding material made of a nickel-based alloy, a copper alloy, stainless steel, or a titanium alloy, the sealed regions being positioned at both sides of the cooling water passage, respectively.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: June 13, 2023
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Daichi Kubo, Yuto Sakane, Tomohiro Ueno, Ryo Morihashi, Hayato Iwasaki, Yuji Kamei, Hideaki Kurokawa, Yoshishige Sakai, Takayuki Imai
  • CYLINDER COVER AND METHOD OF IMPROVING CORROSION RESISTANCE THEREOF
    Publication number: 20230081391
    Abstract: A method of improving corrosion resistance of a cylinder cover including a port that is an intake port or an exhaust port. The cylinder cover is configured such that an annular cooling water passage is formed between an inner peripheral surface of the port and a valve seat ring when the valve seat ring is inserted in the port. The method includes forming a weld overlay layer on each of sealed regions of the inner peripheral surface of the port by laser metal deposition using a welding material made of a nickel-based alloy, a copper alloy, stainless steel, or a titanium alloy, the sealed regions being positioned at both sides of the cooling water passage, respectively.
    Type: Application
    Filed: February 13, 2020
    Publication date: March 16, 2023
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Daichi KUBO, Yuto SAKANE, Tomohiro UENO, Ryo MORIHASHI, Hayato IWASAKI, Yuji KAMEI, Hideaki KUROKAWA, Yoshishige SAKAI, Takayuki IMAI