Patents Assigned to Esco Tool
  • Safety tether for pipe end prep tool
    Patent number: 8439326
    Abstract: A safety tether is provided for securing a heavy work tool. The safety tether includes one or more springs that serve to carry some of the weight of the work tool. A safety chain is provided in parallel connection with the springs. The length of the chain is less than the extended length of a spring at its maximum rated load, thus precluding extension of the springs to that link, greatly reducing any likelihood that the springs will break. In the event of spring breakage, the chain serves as a safety chain, stopping the tool from falling.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: May 14, 2013
    Assignee: ESCO Tool
    Inventor: James A. Moruzzi
  • System for removing heat transfer fins from, and beveling the ends of, boiler tubes
    Patent number: 7305746
    Abstract: A system is disclosed to use a first rotary milling head to break or cut the bond of a heat transfer fin base to a boiler tube, thereby removing the heat transfer fins from the boiler tube, and a second rotary milling head to bevel the exposed end of the boiler tube, thereby facilitating the more efficient repair of the boiler tube.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: December 11, 2007
    Assignee: Esco Tool
    Inventor: James Moruzzi