Patents Assigned to Muskegon Tool Industries
  • Trepanning and boring tool
    Patent number: 3942905
    Abstract: A trepanning tool is adapted to receive attachments for performing boring operations on trepanned holes. The attachments interengage with the trepanning unit to establish a boring diameter concentric with, and adjustable with respect to, the trepanned diameter without removing the trepanning cutter.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: March 9, 1976
    Assignee: Muskegon Tool Industries
    Inventors: Geoffrey Gill, Donald W. Pratt, Bryant W. Green