Patents by Inventor Susumu Nakaoka

Susumu Nakaoka 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).

  • Method of and apparatus for measuring a tension of grid element
    Patent number: 5251491
    Abstract: A method of and apparatus for measuring a tension by the steps of vibrating a measured object of a line- or belt-shaped configuration by the flow of air from an air nozzle so that the measured object is resonated, counting the number of vibrations of the measured object per second by the radiation of a laser light emitted from a very small distance measuring device, and calculating a resonance frequency of the measured object from the number of the vibrations to thereby obtain a tension of the measured object.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: October 12, 1993
    Assignee: Sony Corporation
    Inventors: Susumu Nakaoka, Sadao Kozuka, Tomoyuki Kurihara