Patents by Inventor Benton B. Caldwell

Benton B. Caldwell 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).

  • Portable electric wire reel
    Patent number: 4278214
    Abstract: A telescopically adjustable base supports an upright frame horizontally journalling a shaft having a driven pulley on one end portion and a wire reel on its other end portion. A pair of arms, pivotally connected with the upright frame, supports an electric motor having a drive pulley for gravity tension of a belt entrained around the pulleys.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: July 14, 1981
    Inventor: Benton B. Caldwell