Method of and apparatus for breaking rock

Details Method of and apparatus for breaking rock Method of and apparatus for breaking rock

2008-05-06

2008-05-06

Kreck, John (Department: 3672)

Mining or in situ disintegration of hard material

Processes

Explosive

C102S331000

Reexamination Certificate

active

10880620

ABSTRACT:
Apparatus for breaking rock includes a cartridge with a base and a wall which extends from the base, the base and the wall forming an enclosure, a propellant inside the enclosure and means for igniting the propellant, and wherein at least the wall is made from a malleable material adapted to reinforce the wall of a hole in the rock in which the cartridge is located.

REFERENCES:
patent: 3235117 (1966-02-01), Mason, Jr.
patent: 3420173 (1969-01-01), Slawinski et al.
patent: 4470352 (1984-09-01), Leperre
patent: 5765923 (1998-06-01), Watson et al.
patent: 6145934 (2000-11-01), Arai et al.
patent: 6422148 (2002-07-01), Xu et al.
History of Skipper Ceremonial Cannon of the Virginia Tech Corps of Cadets.htm http://spec.lib.vt.edu/archives/125th/cadets/cannon.htm printed 2007.

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