Patents by Inventor Yukihiro Kurimoto

Yukihiro Kurimoto 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).

  • Propeller for watercraft and outboard motor
    Patent number: 8105046
    Abstract: A propeller for watercraft having excellent abrasion resistance includes a propeller body having a blade and a hub portion, the propeller body being molded by casting an aluminum alloy, and an anodic oxide coating provided so as to cover a surface of the propeller body, the anodic oxide coating being obtained by performing a blast treatment for the surface of the propeller body and thereafter subjecting the surface to anodic oxidation.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: January 31, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Toru Kitsunai, Morimitsu Manabe, Yukihiro Kurimoto
  • Propeller for watercraft, outboard motor and watercraft including the same and the method for producing the same
    Patent number: 8083490
    Abstract: A propeller for watercraft having excellent abrasion resistance includes a propeller body having a blade and a hub portion, the propeller body being molded from an aluminum alloy by casting, and an anodic oxide coating of the aluminum alloy provided so as to cover a surface of the propeller body. The anodic oxide coating has a thickness of about 20 ?m or more in a thinnest portion and a hardness of about 330 HV or more at a near-surface level in a thickest portion.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: December 27, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Toru Kitsunai, Yukihiro Kurimoto
  • Propeller for watercraft and outboard motor
    Patent number: 8079822
    Abstract: A propeller for watercraft having excellent abrasion resistance and deformation resistance includes a propeller body having a blade and a hub portion, the propeller body being composed of an aluminum alloy and having a Vickers hardness of no less than about 60 Hv and no more than about 95 Hv; and an anodic oxide coating of the aluminum alloy provided so as to cover a surface of the propeller body. The anodic oxide coating has a thickness of no less than about 20 ?m and no more than about 100 ?m. Preferably, the anodic oxide coating has a hardness of no less than about 300 Hv and no more than about 450 Hv.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: December 20, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Toru Kitsunai, Yukihiro Kurimoto
  • PROPELLER FOR WATERCRAFT, OUTBOARD MOTOR AND WATERCRAFT INCLUDING THE SAME AND THE METHOD FOR PRODUCING THE SAME
    Publication number: 20080160846
    Abstract: A propeller for watercraft having excellent abrasion resistance includes a propeller body having a blade and a hub portion, the propeller body being molded from an aluminum alloy by casting, and an anodic oxide coating of the aluminum alloy provided so as to cover a surface of the propeller body. The anodic oxide coating has a thickness of about 20 ?m or more in a thinnest portion and a hardness of about 330 HV or more at a near-surface level in a thickest portion.
    Type: Application
    Filed: December 19, 2007
    Publication date: July 3, 2008
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Toru KITSUNAI, Yukihiro KURIMOTO
  • PROPELLER FOR WATERCRAFT AND OUTBOARD MOTOR
    Publication number: 20080050989
    Abstract: A propeller for watercraft having excellent abrasion resistance and deformation resistance includes a propeller body having a blade and a hub portion, the propeller body being composed of an aluminum alloy and having a Vickers hardness of no less than about 60 Hv and no more than about 95 Hv; and an anodic oxide coating of the aluminum alloy provided so as to cover a surface of the propeller body. The anodic oxide coating has a thickness of no less than about 20 ?m and no more than about 100 ?m. Preferably, the anodic oxide coating has a hardness of no less than about 300 Hv and no more than about 450 Hv.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 28, 2008
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Toru Kitsunai, Yukihiro Kurimoto
  • PROPELLER FOR WATERCRAFT AND OUTBOARD MOTOR
    Publication number: 20080050990
    Abstract: A propeller for watercraft having excellent abrasion resistance includes a propeller body having a blade and a hub portion, the propeller body being molded by casting an aluminum alloy, and an anodic oxide coating provided so as to cover a surface of the propeller body, the anodic oxide coating being obtained by performing a blast treatment for the surface of the propeller body and thereafter subjecting the surface to anodic oxidation.
    Type: Application
    Filed: August 17, 2007
    Publication date: February 28, 2008
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Toru Kitsunai, Morimitsu Manabe, Yukihiro Kurimoto