Patents by Inventor Hidefumi NAGATOMO

Hidefumi NAGATOMO 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).

  • Patent number: 9108799
    Abstract: The purpose of the present invention is to provide a conveyor chain conveying a conveyance object such as a bucket while the conveyance object is mounted thereon, wherein the conveyance object can be conveyed to a predetermined position while both the conveyance object and the receiving member are not damaged by “biting” or “hooking” at upstream or downstream end in a conveying direction. An upstream tapered surface and a downstream tapered surface, which reduce the thickness of the receiving member gradually along the extended direction, are formed respectively at sides in the extended direction of a mounting surface of the receiving member. A locus of the mounting surface in a case in which the conveyor chain is meshed with and wound onto a sprocket is within a circle which is coaxial to the sprocket and whose tangent is a straight locus of the mounting surface in a case of conveying a bucket (conveyance object).
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: August 18, 2015
    Assignees: DAIFUKU CO., LTD., ORIENTAL CHAIN MFG. CO., LTD.
    Inventors: Masahiro Miyake, Hidefumi Nagatomo, Kenichi Nishizaka
  • Publication number: 20140332353
    Abstract: The purpose of the present invention is to provide a conveyor chain conveying a conveyance object such as a bucket while the conveyance object is mounted thereon, wherein the conveyance object can be conveyed to a predetermined position while both the conveyance object and the receiving member are not damaged by “biting” or “hooking” at upstream or downstream end in a conveying direction. An upstream tapered surface and a downstream tapered surface, which reduce the thickness of the receiving member gradually along the extended direction, are formed respectively at sides in the extended direction of a mounting surface of the receiving member. A locus of the mounting surface in a case in which the conveyor chain is meshed with and wound onto a sprocket is within a circle which is coaxial to the sprocket and whose tangent is a straight locus of the mounting surface in a case of conveying a bucket (conveyance object).
    Type: Application
    Filed: May 5, 2014
    Publication date: November 13, 2014
    Applicants: Daifuku Co., Ltd., Oriental Chain Mfg. Co., Ltd.
    Inventors: Masahiro MIYAKE, Hidefumi NAGATOMO, Kenichi NISHIZAKA