Patents by Inventor Shinichiro KOMINAMI

Shinichiro KOMINAMI 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).

  • Inspection method and apparatus of spark plug insulator
    Patent number: 10116123
    Abstract: A method of inspecting a spark plug insulator that includes a collar portion, a rear body portion located in rear of the collar portion and a leg portion located in front of the collar portion. The inspection method includes: performing measurement of a distance in a radial direction of the insulator between an outer circumferential surface of the leg portion at a first measurement point and an outer circumferential surface of the any portion of the insulator other than the leg portion at a second measurement point, wherein the measurement is performed at a plurality of positions in a circumferential direction of the insulator with no contact to the measurement target; determining, as a circular runout, a difference between maximum and minimum values among measurement results of the distance; and making pass/fail judgment of the insulator based on the determined circular runout.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: October 30, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Shinichiro Kominami, Hajime Kawano
  • INSPECTION METHOD AND APPARATUS OF SPARK PLUG INSULATOR
    Publication number: 20170170637
    Abstract: A method of inspecting a spark plug insulator that includes a collar portion, a rear body portion located in rear of the collar portion and a leg portion located in front of the collar portion. The inspection method includes: performing measurement of a distance in a radial direction of the insulator between an outer circumferential surface of the leg portion at a first measurement point and an outer circumferential surface of the any portion of the insulator other than the leg portion at a second measurement point, wherein the measurement is performed at a plurality of positions in a circumferential direction of the insulator with no contact to the measurement target; determining, as a circular runout, a difference between maximum and minimum values among measurement results of the distance; and making pass/fail judgment of the insulator based on the determined circular runout.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 15, 2017
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Shinichiro KOMINAMI, Hajime KAWANO