Patents by Inventor Norio Namiki

Norio Namiki 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).

  • Ball chain and method of manufacturing the same
    Patent number: 7716911
    Abstract: A ball chain including metal balls with a small wall thickness and can withstand a large tensile load are provided. A method of manufacturing the same includes rounding a piece of metal to form rotation-axis symmetric bodies (22) and connecting the rotation-axis symmetric bodies (22) in a chain-like manner with connecting shafts. Each of the connecting shafts has connecting heads on both end portions. Each of the rotation-axis symmetric bodies (22) has a butt seam (24) in a direction of a rotation axis of the rotation-axis symmetric body and a weld part (25) at least one part of the butt seam (24).
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: May 18, 2010
    Assignee: Namiki Co., Ltd.
    Inventors: Norio Namiki, Hiroji Takahashi
  • BALL CHAIN AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20090183488
    Abstract: A ball chain including metal balls with a small wall thickness and can withstand a large tensile load are provided. A method of manufacturing the same includes rounding a piece of metal to form rotation-axis symmetric bodies 22 and connecting the rotation-axis symmetric bodies 22 in a chain-like manner with connecting shafts. Each of the connecting shafts has connecting heads on both end portions. Each of the rotation-axis symmetric bodies 22 has a butt seam 24 in a direction of a rotation axis of the rotation-axis symmetric body and a weld part 25 at at least one part of the butt seam 24.
    Type: Application
    Filed: November 26, 2008
    Publication date: July 23, 2009
    Applicant: Namiki Co., Ltd.
    Inventors: Norio Namiki, Hiroji Takahashi