Patents Assigned to John B. Long Co.
  • Headlight for mine vehicle
    Patent number: 4779167
    Abstract: A dual-lamp headlight for use in underground mines or the like being capable of continuous output of illumination without exceeding an external surface temperature of 150.degree. C. including improved housing means and heat dissipation means associated therewith.
    Type: Grant
    Filed: March 9, 1986
    Date of Patent: October 18, 1988
    Assignee: John B. Long Co.
    Inventor: Robert C. Nelson