E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/34
E21B 19/087 (2006.01)
Patent
CA 1229333
A B S T R A C T A drilling machine comprises a votary motor mounted to an assemblage of rigid bar linkages. Means are provided for moving the linkages relative to each other. The linkages are connected together in a configuration which ensures that as the linkages move relative to each other the rotary motor moves along a vertical line. Preferably the machine will be mounted on a suitable vehicle. The invention extends to a method of drilling.
470721
Gien Bernard L.
Macrae & Co.
LandOfFree
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