Method for rock-chiseling
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United States of America Patent
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Issued Date -
May 27, 2004
app pub date -
Oct 28, 2003
filing date -
Jan 15, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a method for opening rock with a chisel, especially for producing a drillhole in rock by means of a drilling device that comprises a percussion drive and a rotating thrust rod assembly. The percussion unit, via the drill head, exerts a thrust impulse on the breast in a segment thereof in order to knock out rock from the breast. In a subsequent step, the percussion unit is rotated by an angle .alpha. via the rod assembly. Pieces of rock are knocked out from the breast by exerting thrust impulses via the drill head and the drill tip in the corresponding new segment of the breast.
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