Patents by Inventor Sarah Ann Barker

Sarah Ann Barker 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).

  • Method of calibrating a clutch actuator with a compensating spring
    Patent number: 6823754
    Abstract: A method of calibrating an equilibrium position of an actuator driven by an electric motor with the assistance of a compensating spring, wherein the actuator moves a mechanism and the mechanism opposes the movement with an elastic force, and wherein in the equilibrium position the compensating spring counterbalances the elastic force, includes the following steps: applying a large-amplitude, high-frequency alternating position signal to energize the electric motor, wherein the position signal is biased so that alternating extremes of the position signal straddle the equilibrium position, measuring an actual dynamically variable position of the actuator by means of a position sensor, and determining the equilibrium position as that position where the actuator settles.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: November 30, 2004
    Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KG
    Inventors: Bernhard Boll, Sarah Ann Barker
  • Method of calibrating a clutch actuator with a compensating spring
    Publication number: 20040128051
    Abstract: A method of calibrating an equilibrium position of an actuator driven by an electric motor with the assistance of a compensating spring, wherein the actuator moves a mechanism and the mechanism opposes the movement with an elastic force, and wherein in the equilibrium position the compensating spring counterbalances the elastic force, includes the following steps:
    Type: Application
    Filed: October 9, 2003
    Publication date: July 1, 2004
    Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KG.
    Inventors: Bernhard Boll, Sarah Ann Barker