Patents by Inventor Isamu Sumi

Isamu Sumi 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).

  • Article transfer apparatus
    Patent number: 6604623
    Abstract: With an article transfer apparatus 1 of the present invention, when a negative pressure is applied on an air outlet 20 in a non-attracting state, the amount of air that is sucked through suction holes 6 in a front attracting section 2f is greater than the amount of air that is sucked through suction holes 7 in a rear attracting section 2b. Therefore, the suction amount through the front attracting section 2f is increased while reducing the suction loss of the attracting pad 2, thereby improving the reliability of the attraction operation.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: August 12, 2003
    Assignee: Zuiko Corporation
    Inventors: Isamu Sumi, Yuzo Ichiura, Hiromi Mae
  • Article transfer apparatus
    Publication number: 20020112939
    Abstract: With an article transfer apparatus 1 of the present invention, when a negative pressure is applied on an air outlet 20 in a non-attracting state, the amount of air that is sucked through suction holes 6 in a front attracting section 2f is greater than the amount of air that is sucked through suction holes 7 in a rear attracting section 2b. Therefore, the suction amount through the front attracting section 2f is increased while reducing the suction loss of the attracting pad 2, thereby improving the reliability of the attraction operation.
    Type: Application
    Filed: January 23, 2002
    Publication date: August 22, 2002
    Inventors: Isamu Sumi, Yuzo Ichiura, Hiromi Mae