DRILL STRING COMPONENT FOR NOISE CONTROL DURING PERCUSSION DRILLING

Title:

DRILL STRING COMPONENT FOR NOISE CONTROL DURING PERCUSSION DRILLING

Document Type and Number:

WIPO Patent Application WO/2011/025431

Kind Code:

A8

Abstract:

Drill string components (2;18) for top hammer drilling and down-the-hole drilling for positioning between a drill rig and a drill bit including a pipe-shaped element (3;19), which is arranged for transferring only rotational movements from the drill rig to the drill bit. A vibration-damping structure (12) is arranged adjoining to at least a part of an inside (H') of the pipe-shaped element in a space (41) formed inwardly of said inside (H'). The invention also concerns a rock drilling equipment.

Inventors:

CARLSSON JIMMY (SE)
BERONIUS ALEXANDER (SE)
GOETHBERG MATTIAS (SE)
ENBLOM SAMUEL (SE)
STENBERG GOERAN (SE)

Application Number:

PCT/SE2010/000211

Publication Date:

February 09, 2012

Filing Date:

August 30, 2010

Export Citation:

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Assignee:

ATLAS COPCO SECOROC AB (SE)
CARLSSON JIMMY (SE)
BERONIUS ALEXANDER (SE)
GOETHBERG MATTIAS (SE)
ENBLOM SAMUEL (SE)
STENBERG GOERAN (SE)

International Classes:

E21B17/00; B25D17/11

Attorney, Agent or Firm:

EHRNER & DELMAR PATENTBYRÅ AB (S- Stockholm, SE)

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