Patents by Inventor Jefferson Butler

Jefferson Butler 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).

  • Slip-fit transformer stud electrical connector
    Patent number: 6579131
    Abstract: An electrical connector for transformer studs accommodates two different size transformer studs in the same slip-fit blind hole. The hole is provided with circumferential arc recesses which are sized and threaded to match the threads on the two different size studs. One or more jam screws force the stud into the respective recesses, and the matching threads provide a substantial contact area and an effective and efficient long lasting and sturdy electrical transformer connection.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: June 17, 2003
    Assignee: Connector Manufacturing Company
    Inventors: Thomas K. Ashcraft, Jefferson Butler, Raymond Olle