Patents by Inventor Robert Keith Sim

Robert Keith Sim 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).

  • Spark plug and manufacturing method thereof
    Patent number: 11158997
    Abstract: A spark plug for use with an engine block/cylinder head having a threaded bore and also for use with a spark plug wrench and an ignition wire. Also, an improved method for constructing a spark plug, the spark plug including a metal shell having a hex nut, a seat, a flange, a bore and threads. A ground electrode is associated with the shell and an insulator assembly occupies the bore and is gripped by the flange. The method includes the steps of forming the hex nut and the seat by carrying out operations on a blank, roiling the threads, fitting the insulator assembly into the bore, deforming the flange to capture the insulator, and forming the negative electrode by machining the blank.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: October 26, 2021
    Assignee: NANO SPARK, INC.
    Inventors: Thomas L. Herriges, Mark Farrell, Ghabi Neame, Robert Keith Sim, Carlos Fernandes, Harry E. Ruda
  • SPARK PLUG AND MANUFACTURING METHOD THEREOF
    Publication number: 20200388993
    Abstract: A spark plug for use with an engine block/cylinder head having a threaded bore and also for use with a spark plug wrench and an ignition wire. Also, an improved method for constructing a spark plug, the spark plug including a metal shell having a hex nut, a seat, a flange, a bore and threads. A ground electrode is associated with the shell and an insulator assembly occupies the bore and is gripped by the flange. The method includes the steps of forming the hex nut and the seat by carrying out operations on a blank, roiling the threads, fitting the insulator assembly into the bore, deforming the flange to capture the insulator, and forming the negative electrode by machining the blank.
    Type: Application
    Filed: August 8, 2017
    Publication date: December 10, 2020
    Inventors: Thomas L. Herriges, Mark Farrell, Ghabi Neame, Robert Keith Sim, Carlos Fernandes, Harry E. Ruda