Title:
PNEUMATIC ROCK DRILL
Document Type and Number:
WIPO Patent Application WO2004080661
Kind Code:
A8
Abstract:
The invention relates to a pneumatic rockdrill (99) comprising: a housing, including an air supply inlet for receiving compressed air, and a cylinder (50), connected to the air supply inlet by a set of air passages; an impact piston (14), at least part of which is reciprocable within the cylinder (50); and air-flow control means for controlling the supply of compressed air from the air supply inlet to the cylinder (50); the rockdrill (99) including at least one pair of corresponding contact surfaces at which relatively-moving parts contact one another; and the rockdrill being characterized by including at least one water supply inlet and water paths connected to the water supply inlet(s) and configured so as in operation to convey water to a drilling tool so as to flush a hole being drilled and to supply water to wet the aforesaid contact surfaces.
Inventors:
DAVIES MICHAEL RICHARD (AU)
GEE DAVID JOHN (ZA)
CRESWELL JAMES (ZA)
JONES STEPHEN EDWIN (ZA)
GEE DAVID JOHN (ZA)
CRESWELL JAMES (ZA)
JONES STEPHEN EDWIN (ZA)
Application Number:
PCT/IB2004/050254
Publication Date:
April 07, 2005
Filing Date:
March 15, 2004
Export Citation:
Assignee:
SULZER SOUTH AFRICA LTD (ZA)
DAVIES MICHAEL RICHARD (AU)
GEE DAVID JOHN (ZA)
CRESWELL JAMES (ZA)
JONES STEPHEN EDWIN (ZA)
DAVIES MICHAEL RICHARD (AU)
GEE DAVID JOHN (ZA)
CRESWELL JAMES (ZA)
JONES STEPHEN EDWIN (ZA)
International Classes:
B25D17/16; B25D17/24; B25D17/26; (IPC1-7): B25D17/24
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