Patents by Inventor Bruce A. Mackey, Sr.

Bruce A. Mackey, Sr. 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).

  • Boring tool guide device
    Patent number: 4027992
    Abstract: A boring tool guide device is disclosed in which there is included a standardized power source connector suitable for coupling with a moving power source, a boring tool, surfaces to mate with jigs and fixtures, a pre-set depth control spacer, and yieldable means for automatic retraction of the boring tool from the work piece.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: June 7, 1977
    Inventors: Bruce A. Mackey, Sr., Bruce A. Mackey, Jr.