Patents by Inventor Yoshijiro Shiba

Yoshijiro Shiba 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).

  • Restriction flowmeter
    Patent number: 6912919
    Abstract: A restriction flowmeter including a cylinder through whose interior a fluid to be measured flows and a pipe for forming a restriction structure penetrating the cylinder in a direction perpendicular to the central axis of the cylinder, the pipe having a diameter smaller than the inner diameter of the cylinder, characterized in that a first pressure measuring hole is formed on the most restricted cross section perpendicular to the flow direction and a second pressure measuring hole is formed on a wall of the cylinder located upstream which is away from the most restricted cross section by ½ or more of the inner diameter of the cylinder.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: July 5, 2005
    Assignee: Wetmaster Co., Ltd.
    Inventors: Yoshijiro Shiba, Masakazu Saito, Shigehito Yamada
  • Restriction flowmeter
    Publication number: 20040187598
    Abstract: A restriction flowmeter including a cylinder through whose interior a fluid to be measured flows and a pipe for forming a restriction structure penetrating the cylinder in a direction perpendicular to the central axis of the cylinder, the pipe having a diameter smaller than the inner diameter of the cylinder, characterized in that a first pressure measuring hole is formed on the most restricted cross section perpendicular to the flow direction and a second pressure measuring hole is formed on a wall of the cylinder located upstream which is away from the most restricted cross section by ½ or more of the inner diameter of the cylinder.
    Type: Application
    Filed: January 29, 2004
    Publication date: September 30, 2004
    Inventors: Yoshijiro Shiba, Masakazu Saito, Shigehito Yamada