Patents by Inventor Stephen D. Collier

Stephen D. Collier 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).

  • Electrical testing device
    Patent number: 6323652
    Abstract: An electrical testing device for determining the continuity between ground terminals of an electrical power cord and determining the electrical grounding of an electrical power tool. The electrical testing device can also be configured to determine the proper polarity on each of the hot, negative, and ground cord wires of an electrical power extension cord. The electrical testing device includes a plastic case housing one or more batteries which supply power to a test button and the ground terminal of a female receptacle installed in the case. The top surface of the case includes a female receptacle, a test button, and a ground light. The top surface may also include a male plug and an additional female receptacle installed in the case. On the side of the case is an extending metal contact element. The test button is a single pole momentary contact test button.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: November 27, 2001
    Inventors: Stephen D. Collier, Wayne E. Hughes
  • Electrical testing device
    Patent number: 6054849
    Abstract: An electrical testing device for determining the continuity between ground terminals of an electrical power cord and determining the electrical grounding of an electrical power tool. The electrical testing device can also be configured to determine the proper polarity on each of the hot, negative, and ground cord wires of an electrical power extension cord. The electrical testing device includes a plastic case housing one or more batteries which supply power to a test button and the ground terminal of a female receptacle installed in the case. The top surface of the case includes a female receptacle, a test button, and a ground light. The top surface may also include a male plug and an additional female receptacle installed in the case. On the side of the case is an extending metal contact element. The test button is a single pole momentary contact test button.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: April 25, 2000
    Inventors: Stephen D. Collier, Wayne E. Hughes