Patents Assigned to National Tooling & Machining, Inc.
  • Boring bar device and method of assembly
    Patent number: 5809854
    Abstract: A boring bar device comprising an elongated shank and a chisel head. The shank and chisel head are connected by a mating V-shaped cross-sectional joint wherein a solder shim of a predetermined composition is utilized in conjunction with a brazing process to connect the chisel head to the elongated shank to provide the boring bar device of the invention.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: September 22, 1998
    Assignee: National Tooling & Machining, Inc.
    Inventors: Robert C. Thielen, Craig A. Hiatt