Patents by Inventor Tom A. Heckathorne

Tom A. Heckathorne 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).

  • Bi-directional actuator using a random direction AC motor
    Patent number: 5723918
    Abstract: An actuator uses an AC motor assembly having a random chance of rotating in either direction upon stalling or first receiving power, to provide torque for operating its output member. The output member operates from one extreme position to another. Limit stops prevent the output member from moving past each extreme position. There is a limit switch which removes power from the motor assembly while the output member is at an extreme position. A startup switch supplies power to the motor assembly at each extreme position when the output member is to be driven to the other extreme position.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: March 3, 1998
    Assignee: Honeywell Inc.
    Inventors: Roger A. Schilling, Tom A. Heckathorne, Edward L. Schwarz