Rock Breaking Cartridge and Use Thereof
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United States of America Patent
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Issued Date -
Feb 28, 2008
app pub date -
Jan 19, 2005
filing date -
Jan 26, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A rock breaking cartridge (10) which includes a tubular body (12), spaced inner and outer second caps (14 and 16) inside the tubular body (12), a propellant (20) inside the tubular body (12) between the caps (14 and 16), a radially expansible stemming device (30) inside the tubular body (12) spaced from the inner cap (14), and a filler (34) between the inner cap (14) and the stemming device (30).
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