Patents Examined by Jerome W. Massive, IV
  • Rotary drill guard assembly and method
    Patent number: 4889193
    Abstract: A guard assembly for encasing drive rods during below ground horizontal drilling is illustrated as including a tube positionable by an adjustable tube guide, which remains stationary during drilling, an expandable tube having a smaller diameter for telescoping into the larger tube, means attaching the smaller tube to the rotary drill power source for substantial encasement of the drive rod during drilling.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: December 26, 1989
    Assignee: McLaughlin Manufacturing Company
    Inventor: Max H. Shy