Patents by Inventor Aubrey C. Childers

Aubrey C. Childers 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).

  • Mechanical torque limit for valve actuator
    Patent number: 4114078
    Abstract: An electrically energized actuator for operating a valve has an output shaft for connection to a rotatable valve stem and is driven, via a gear train, by an electrically energized motor. A safety shut off mechanism is responsive to a predetermined resistance to rotation of the output shaft to operate an electric switch which prevents further operation of the drive motor.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: September 12, 1978
    Inventors: Richard F. Malinski, Aubrey C. Childers