Patents by Inventor Lloyd M. Austin

Lloyd M. Austin 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).

  • Patent number: 4164701
    Abstract: A portable testing device is disclosed for testing the electrical circuits of power tools and cables having a general three-conductor wiring circuit including a first test station for checking the wiring polarity of an outside electrical receptacle from which the testing device operates and a second test station having a testing circuit and receptacle for receiving a plug of the power equipment being tested for detecting the existence of a defective ground circuit in the power equipment. A third test station is provided for checking the ground continuity of a power tool wiring circuit. A fourth test station is provided for checking the wiring conditions of a three-conductor extension power cable having a three-prong plug carried on one end and a three-socket receptacle carried on the other end.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: August 14, 1979
    Inventors: Charles P. Gulledge, Lloyd M. Austin, James B. Stephens