Patents Assigned to North American Tool Corporation
  • Tandem tap and method for cutting screw threads
    Patent number: 6554550
    Abstract: A tandem tap for cutting screw threads into a bore comprises straight flutes with a spiral point along the front section for pushing the chips generated thereby forward and spiral flutes along the rear section for removing the chips generated thereby rearward in an opposite direction. The tap prevents build up of chips in the transition area between front and rear cutting sections of the tap.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: April 29, 2003
    Assignee: North American Tool Corporation
    Inventors: Penny E. Chapel, Ricky D. Rath
  • Tandem tap and method for cutting screw threads
    Publication number: 20030049081
    Abstract: A tandem tap for cutting screw threads into a bore comprises straight flutes with a spiral point along the front section for pushing the chips generated thereby forward and spiral flutes along the rear section for removing the chips generated thereby rearward in an opposite direction. The tap prevents build up of chips in the transition area between front and rear cutting sections of the tap.
    Type: Application
    Filed: September 7, 2001
    Publication date: March 13, 2003
    Applicant: North American Tool Corporation
    Inventors: Penny E. Chapel, Ricky D. Rath