Patents by Inventor Lamar H. McLouth

Lamar H. McLouth 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).

  • Return-to-zero control method for a stepper motor
    Patent number: 7816883
    Abstract: In a return-to-zero stepping sequence for a stepper motor that drives the pointer of a gauge, steps that could potentially cause the pointer to flutter are modified. At least the initial potential flutter step of the stepping sequence is divided into sub-steps to progressively attenuate the motor torque, the motor is deactivated during intermediate potential flutter steps, and at least the final potential flutter step of the stepping sequence is divided into sub-steps to progressively re-apply the motor torque.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: October 19, 2010
    Assignee: Delphi Technologies, Inc.
    Inventors: David B. Houser, Lamar H. McLouth, David J. Elliott
  • Return-to-zero control method for a stepper motor
    Publication number: 20090091288
    Abstract: In a return-to-zero stepping sequence for a stepper motor that drives the pointer of a gauge, steps that could potentially cause the pointer to flutter are modified. At least the initial potential flutter step of the stepping sequence is divided into sub-steps to progressively attenuate the motor torque, the motor is deactivated during intermediate potential flutter steps, and at least the final potential flutter step of the stepping sequence is divided into sub-steps to progressively re-apply the motor torque.
    Type: Application
    Filed: October 9, 2007
    Publication date: April 9, 2009
    Inventors: David B. Houser, Lamar H. McLouth, David J. Elliott