Gear, Threaded Article, Drill Or Serrated Work Surface (e.g., Saw Blade, Etc.) Patents (Class 148/573)
  • Method and apparatus of quench hardening of gear teeth surfaces
    Patent number: 5213636
    Abstract: A method for induction heating and quench hardening of helical gears provides a hardness pattern uniformly distributed to a controlled depth across and between the teeth surfaces by means of axial scanning of the workpiece and uniform quenching. Uniform quenching is achieved by directing jets of quench fluid at the workpiece toothed surface at angles horizontally offset from the radial direction.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: May 25, 1993
    Assignee: Tocco, Inc.
    Inventors: Ronald R. Akers, William D. West