E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
E21C 35/18 (2006.01)
Patent
CA 2554654
The present invention relates to a cutting pick used for mining and excavation purposes and a method of using a cutting pick for mining. The cutting pick comprises an elongate shank (10), a cutting tip (11) fixed to one end of the shank to project from that end and which is of a material that is harder than the material of the shank (10), and a composite sleeve (31) formed of a plurality of annular sleeve portions (32) which are attached about the shank (10) adjacent the cutting tip and immediately adjacent to each other. The sleeve portions (32) are of a material which is harder than the material of the shank and which has a lower propensity for incendive spark production during a cutting operation than the material of the shank (10).
Un fleuret de coupe utilisé dans l'industrie minière à des fins d'excavation et un procédé d'utilisation dudit fleuret. Ce dernier comprend un emmanchement allongé (10), une pointe de coupe (11) fixée sur l'extrémité de l'emmanchement afin de faire saillie depuis l'extrémité et que l'on obtient à partir d'une matière plus dure que la matière de l'emmanchement (10), et un manchon composite (31) formé d'une pluralité de parties manchon annulaires (32) fixées autour de l'emmanchement (10) adjacents au bout de coupe et immédiatement adjacents les uns par rapport aux autres. Les parties manchon (32) sont d'une matière plus dure que la matière de l'emmanchement et présentent une propension inférieure à la production d'étincelles pendant l'opération de coupe que la matière de l'emmanchement (10).
Sleep Keith
Weaver Steven
Gowling Lafleur Henderson Llp
Sandvik Intellectual Property Ab
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