Patents Assigned to Summit Mining Ltd.
  • Fluid supply duct and pickup for mining machines
    Patent number: 4072355
    Abstract: A duct for use with mine equipment is provided with an elongate aperture normally closed by a displaceable sealing means to retain a fluid, under pressure, within the duct, the sealing means, in use, being displaceable by fluid pick-up means carried by a mining machine to convey fluid from the duct to the machine. The invention also includes conveyor trough section provided with such a duct and a mining machine combination.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: February 7, 1978
    Assignee: Summit Mining Ltd.
    Inventor: Gerald R. O. Pentith