Patents by Inventor Ken KREWULAK

Ken KREWULAK 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).

  • Firetube scraper
    Patent number: 10222147
    Abstract: A firetube scraper device comprising: at least one carriage assembly mounted on the firetube; a drive line and drive means for displacing the carriage assembly longitudinally along the firetube; wherein said carriage assembly surrounding the entire circumference of the firetube and comprising at least one row of scraper fins, each of said scraper fins having an inner surface adapted to frictionally engage an outer firetube surface defined by at least an upper portion of the surface of the firetube exposed to contaminants deposited onto a firetube surface.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: March 5, 2019
    Assignee: CANADIAN NATURAL RESOURCES LIMITED
    Inventors: Ken Krewulak, Stephen Scott, Kyle Fiolka, Michael Bucholtz
  • FIRETUBE SCRAPER
    Publication number: 20170023319
    Abstract: A firetube scraper device comprising: at least one carriage assembly mounted on the firetube; a drive line and drive means for displacing the carriage assembly longitudinally along the firetube; wherein said carriage assembly surrounding the entire circumference of the firetube and comprising at least one row of scraper fins, each of said scraper fins having an inner surface adapted to frictionally engage an outer firetube surface defined by at least an upper portion of the surface of the firetube exposed to contaminants deposited onto a firetube surface.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Inventors: Ken KREWULAK, Stephen SCOTT, Kyle FIOLKA, Michael BUCHOLTZ