E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 12/00 (2006.01) E21B 15/00 (2006.01)
Patent
CA 2679189
A drill bit carousel for use on a blast hole drill includes a base structure that movably supports a plurality of drill receptacles. The drill bit carousel is movable between a storage position and at least one exchange position. In the exchange position, one of the drill receptacles is aligned with a centerline of a drill pipe string. In the storage position, the drill bit carousel is clear of the centerline of the drill pipe string.
Bienfang David T.
Falendysz Nathaniel A.
Tarnowski Bret A.
Bucyrus International Inc.
Mccarthy Tetrault Llp
LandOfFree
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