Patents by Inventor Staton P. Williams, Jr.

Staton P. Williams, Jr. 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).

  • Photoelectric switch and relay system with disabling fail-safe monitoring circuitry
    Patent number: 5077467
    Abstract: A hand operated photoelectric switch having a channel providing an interrupt area for an operator's hand to pass into the path of an infrared light beam passing from a light emitting diode to a phototransistor sensor. Said housing further including circuitry for operating a mechanical relay to be activated for the operation of electrical machinery. A monitoring circuit is provided to monitor the light emitting diode and a driver transistor for the mechanical relay whereby to detect the failure of either one and disable the circuit from accidentally providing contant closure of the mechanical relay.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: December 31, 1991
    Assignee: Triad Controls, Inc.
    Inventors: Kenneth L. Barron, Jr., Staton P. Williams, Jr.