External water delivery system for rock drills

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 7/02 (2006.01) E21B 7/06 (2006.01) E21D 3/00 (2006.01) E21D 7/00 (2006.01)

Patent

CA 2735817

An external water delivery system includes a water box front head, a collet configured to interface with the water box front head, a polymer sleeve configured to be positioned between the water box front head and the collet, a shank, and at least one seal positioned within the sleeve. The sleeve and seals are configured to provide a water chamber when coupled to the shank. An inner of the sleeve provides a bearing surface for the shank.

L'invention porte sur un système de distribution d'eau externe, qui comprend une tête avant de boîte à eau, un collier configuré pour venir en interface avec la tête avant de boîte à eau, un manchon polymère configuré pour être positionné entre la tête avant de boîte à eau et le collier, une tige et au moins un joint d'étanchéité positionné à l'intérieur du manchon. Le manchon et les joints d'étanchéité sont configurés de façon à constituer une chambre d'eau lorsqu'ils sont couplés à la tige. Un intérieur du manchon procure une surface de portée pour la tige.

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