Patents by Inventor Stephen G. Townsend

Stephen G. Townsend 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).

  • Anti-polish ring for an engine cylinder
    Patent number: 11920538
    Abstract: An anti-polish ring for an internal combustion engine is provided. The anti-polish ring includes an axially extending ring portion that is configured to scrape a top portion of a piston in a cylinder liner. The anti-polish ring is configured to accommodate passage of an intake or exhaust valve thereby. The anti-polish ring may include an alignment feature so that the anti-polish ring is inserted in a predetermined orientation in the cylinder. The anti-polish ring may include a heat shield and/or a seating member.
    Type: Grant
    Filed: November 3, 2022
    Date of Patent: March 5, 2024
    Assignee: Cummins Inc.
    Inventors: Owen Summerfield, Craig Daniel Fox, Robert Harries, Jamie Kehoe, Kent H. Clark, John M Antonevich, Reid M. Irish, Scott A. Ragon, Stephen G. Townsend, Peter Thomas Quanz
  • ANTI-POLISH RING FOR AN ENGINE CYLINDER
    Publication number: 20230089302
    Abstract: An anti-polish ring for an internal combustion engine is provided. The anti-polish ring includes an axially extending ring portion that is configured to scrape a top portion of a piston in a cylinder liner. The anti-polish ring is configured to accommodate passage of an intake or exhaust valve thereby. The anti-polish ring may include an alignment feature so that the anti-polish ring is inserted in a predetermined orientation in the cylinder. The anti-polish ring may include a heat shield and/or a seating member.
    Type: Application
    Filed: November 3, 2022
    Publication date: March 23, 2023
    Inventors: Owen Summerfield, Craig Daniel Fox, Robert Harries, Jamie Kehoe, Kent H. Clark, John M Antonevich, Reid M. Irish, Scott A. Ragon, Stephen G. Townsend, Peter Thomas Quanz