Patents by Inventor Tab Cox

Tab Cox 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).

  • Upstream/downstream arc fault discriminator
    Patent number: 6987389
    Abstract: An arc fault protection device protects a branch circuit portion of an electrical distribution system. The branch circuit is connected to a load. A first sensor detects fluctuations in load current, while a second sensor detects fluctuations in line voltage. The polarities of the fluctuations are compared, and the comparison indicates whether an arc signature, potentially indicative of an arc fault, is located in the branch circuit portion or located in a remainder of the electrical distribution system.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: January 17, 2006
    Assignee: Pass & Seymour, Inc.
    Inventors: Bruce F. Macbeth, Tab Cox