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Milne; Douglas
Vancouver, CA
No. of patents:

Patent Number Title Of Patent Date Issued
5319953 Friction index tester June 14, 1994
An apparatus for measuring the basic friction angle of a surface of given material comprises a housing adapted to be held against a surface of material to be tested, a base which can slide along the inside wall of the housing, a wheel mounted on the lower part of the base and adapted to
5284107 Cable bolt monitoring device February 8, 1994
A monitoring unit for installation on a cable bolt comprises a tube designed to fit within a cable bolt hole and having a collar at one end thereof, a cable bolt adapted to be grouted in the rock at the centre of the tube, a base plate placed tightly against the tube collar adjacent the
5233730 Cable grip August 10, 1993
A cable grip for improving the performance of cable bolts for ground support comprises a segmented wedge defining a cone, each segment having an inside cavity adapted to conform to a circumference of a cable and serrated grooves cut into said inside cavity to grip the cable, and a sl

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