Patents by Inventor Shigeo Iseya

Shigeo Iseya 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: 4333245
    Abstract: A head supporting device for a universal parallel ruler is disclosed. The head supporting device connects the operating head of the ruler, having the scales attached thereto, to the cursor of the ruler, which is movable along a longitudinal rail. When the operating head and the scales are in contact with the drawing board surface, and are forced in an upward direction, the mechanism in the head supporting device locks the operating head in a raised position above the drawing board surface. The drawing may then be removed from the drawing board surface, or the surface may be cleaned. In order to unlock the mechanism in the head supporting device, a slight external downward force should be exerted onto the top of the operating head. Once the downward force exceeds a certain amount, the operating head, with the scales attached thereto, snaps back into contact with the drawing board surface.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: June 8, 1982
    Assignee: Asahi Seimitsu Kabushiki Kaisha
    Inventors: Shigeo Iseya, Giichi Utagawa