Patents by Inventor Dan A. MacDonald

Dan A. MacDonald 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).

  • Publication number: 20020124710
    Abstract: A pipe cutting system for quickly and efficiently severing a cast iron pipe. The pipe cutting system includes a table having an upper slot, a hydraulic pump unit, a hydraulic cylinder, and a cutting chain attached between the hydraulic cylinder and the table extending upwardly through the slot in a looped manner. A first guide roller and a second guide roller guide the cutting chain during operation. The cast iron pipe is positioned within looped portion of the cutting chain exposed above the table through the slot and then the hydraulic cylinder is actuated to draw the cutting chain taut about the pipe until the pipe is cut.
    Type: Application
    Filed: March 8, 2001
    Publication date: September 12, 2002
    Inventor: Dan A. MacDonald