Patents by Inventor Sean R. SIMMONS

Sean R. SIMMONS 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).

  • Patent number: 10094450
    Abstract: A tensioner uses a low rate torsion spring in a first stage and a high rate torsion spring in a second stage to maintain tension in a chain or belt. The first stage is connected to the second stage by a torque coupling. The high rate torsion spring is maintained in an energized state between a ground and a dead stop to store energy and to provide tension under high loads. In some embodiments, the torque coupling is a damper. In other embodiments, the torque coupling is a clutch. A method stores energy in a high rate torsion spring of a tensioner.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: October 9, 2018
    Assignee: BorgWarner Inc.
    Inventors: Sean R. Simmons, Simon Barrette
  • Publication number: 20180094709
    Abstract: A pressure regulator is in fluid communication with a supply inlet of a hydraulic tensioner to actively control fluid to the inlet of the hydraulic tensioner. By actively controlling the pressure regulator based on engine conditions and thus the oil pressure being fed to the hydraulic tensioner, the oil pressure to the hydraulic tensioner may be reduced at low engine speeds, increasing the efficiency of the timing system, or allowing full oil pressure at high engine speeds and low engine temperature.
    Type: Application
    Filed: September 25, 2017
    Publication date: April 5, 2018
    Inventors: Mark M. WIGSTEN, Kevin B. TODD, Dale N. SMITH, Sean R. SIMMONS, Seongdo HONG
  • Publication number: 20170356529
    Abstract: A variable force tensioning assembly creates and maintains a tension force on an endless loop used to transmit power. The variable force tensioning assembly includes a body having a cylinder defining a cylinder inner diameter. An outer piston is disposed substantially within the cylinder and slidable therewithin. The outer piston includes an outer piston tube and a chamber divider extending through the outer piston tube. The outer piston and the body define a low rate portion. An inner piston is disposed at least partially within the outer piston tube and is slidable therewithin. The inner piston defines a high rate portion and acts with the outer piston against the body to create a variable force to push against the endless loop to maintain a constant tension in the endless loop.
    Type: Application
    Filed: June 8, 2017
    Publication date: December 14, 2017
    Inventor: Sean R. SIMMONS
  • Publication number: 20170248204
    Abstract: A tensioner uses a low rate torsion spring in a first stage and a high rate torsion spring in a second stage to maintain tension in a chain or belt. The first stage is connected to the second stage by a torque coupling. The high rate torsion spring is maintained in an energized state between a ground and a dead stop to store energy and to provide tension under high loads. In some embodiments, the torque coupling is a damper. In other embodiments, the torque coupling is a clutch. A method stores energy in a high rate torsion spring of a tensioner.
    Type: Application
    Filed: August 18, 2015
    Publication date: August 31, 2017
    Applicant: BorgWarner Inc.
    Inventors: Sean R. SIMMONS, Simon BARRETTE