Patents by Inventor Tery John Evans

Tery John Evans 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).

  • AFCI temperature compensated current sensor
    Patent number: 7492562
    Abstract: An apparatus and method for thermally compensating a voltage signal for a circuit protection device. The circuit protection device is coupled to a powered circuit and having current flowing through it. A bus carries the power therethrough. A sense resistor is electrically coupled to a bus for sensing the current flowing through the bus. A temperature sensitive circuit is coupled to the sense resistor for compensating ambient temperatures. The invention is useful for providing an accurate sense resistor that supplies a temperature independent current in a power line and the related voltage output of the sense resistor at varying ambient temperatures.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: February 17, 2009
    Assignee: Siemens Energy & Automation, Inc.
    Inventors: Tery John Evans, Elton C. Johnson, Carlos Restrepo