Improved three-prong shell

Details Improved three-prong shell Improved three-prong shell

E - Fixed Constructions

21

D

E21D 21/00 (2006.01) F16B 13/12 (2006.01)

Patent

CA 2342707

An expansion assembly configured to be attached to a mine roof bolt, wherein the expansion assembly may include a plug defining an interior cavity and an outer surface and an expansion shell having a plurality of spaced-apart prongs, preferably three prongs, and defining a plurality of shell grooves, wherein each of the spaced-apart prongs is oriented diametrically opposed to a corresponding shell groove.

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