Patents by Inventor Douglas Lee Simpson

Douglas Lee Simpson 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).

  • Combined thrust bearing/load cell for brake actuators
    Patent number: 9004233
    Abstract: A ring-shaped thrust bearing extending in an axial direction having an inner surface includes a first axial groove in the inner surface having a first flat wall and a second flat wall; and a first principal strain sensor positioned on the first flat wall of the first axial groove to measure compression in the axial direction.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: April 14, 2015
    Assignee: Goodrich Corporation
    Inventors: David Drennen, Kevin Rehfus, Douglas Lee Simpson, Thomas Freshour
  • COMBINED THRUST BEARING/LOAD CELL FOR BRAKE ACTUATORS
    Publication number: 20140158474
    Abstract: A ring-shaped thrust bearing extending in an axial direction having an inner surface includes a first axial groove in the inner surface having a first flat wall and a second flat wall; and a first principal strain sensor positioned on the first flat wall of the first axial groove to measure compression in the axial direction.
    Type: Application
    Filed: December 11, 2012
    Publication date: June 12, 2014
    Applicant: GOODRICH CORPORATION
    Inventors: David Drennen, Kevin Rehfus, Douglas Lee Simpson, Thomas Freshour