Patents Assigned to Barr-Don, Inc.
  • No return mark tool
    Patent number: 4304160
    Abstract: A spring actuated, pivoting cutting tool, which is used in conjunction with turning equipment and which at the termination of its cutting stroke automatically lifts the cutting edge off the finished surface to allow the tool to be withdrawn without leaving a return mark, is provided with a spring actuated, slidable shield which substantially covers any gap between the moving parts of the cutting tool, thus reducing the likelihood of chips or other debris from lodging between the moving parts of the tool and preventing its proper operation.
    Type: Grant
    Filed: February 15, 1980
    Date of Patent: December 8, 1981
    Assignee: Barr-Don, Inc.
    Inventor: Milford W. Nelson