Patents by Inventor Stephen Jefferies

Stephen Jefferies 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).

  • Torque Limiting Tolerance Ring
    Publication number: 20140205374
    Abstract: A torque limiting tolerance ring is disclosed and can include a generally cylindrical body having a sidewall. The sidewall can include an unformed section. A plurality of projections can extend from the unformed section of the sidewall and the plurality of projections can be arranged in a first circumferential row and a second circumferential row. The torque limiting tolerance ring can include a frangible portion that can extend circumferentially around the tolerance ring between the first and second rows of projections.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 24, 2014
    Applicant: Saint-Gobain Performance Plastics Rencol Limited
    Inventors: Benjamin Nias, Stephen Jefferies
  • Cable tensioned rock guard for a trailer
    Patent number: 6616188
    Abstract: A method and apparatus for guarding a cargo on a trailer without a peripheral sidewall against rock damage. The method involves tensioning a sheet of flexible non-supporting material to form a protective shield.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: September 9, 2003
    Inventors: Stephen Jefferies, Colin McCaffrey