Patents Assigned to Joy Manufacturing Comapny
  • Mining machine with cutter drum having internal drive motors
    Patent number: 4047763
    Abstract: A continuous mining machine having a rotary cutter drum provided with internal drive motors. The drive motors extend on opposite sides of the support boom for the rotary cutter drum and each motor is within the axial extent of the cutter drum on each side of the support boom.
    Type: Grant
    Filed: April 27, 1976
    Date of Patent: September 13, 1977
    Assignee: Joy Manufacturing Comapny
    Inventors: James L. Gilliland, Frank B. Kendrick