Tool for breaking up rock or like structures

Details Tool for breaking up rock or like structures Tool for breaking up rock or like structures

1984-10-05

1988-03-01

Nelson, Peter A.

Firearms

Firing mechanism

42106, 89 11, F41C 1102

Patent

active

047276690

ABSTRACT:
A rock breaking tool comprising a firing mechanism and firing chamber for discharging a blank cartridge into an impulse barrel. The impulse barrel has lateral openings and is intended to be inserted into a predrilled water filled hole in rock to be broken up. The barrel has a venturi throat for increasing cartridge discharge gas velocity.

REFERENCES:
patent: 2888768 (1959-06-01), Taylor
patent: 2900972 (1959-08-01), Marsh et al.
patent: 3386334 (1968-06-01), Temple et al.
patent: 3619927 (1971-11-01), Robinet
patent: 3721031 (1973-03-01), Falterman et al.
patent: 3956843 (1976-05-01), Litman
patent: 4004488 (1977-01-01), Williams
patent: 4268987 (1981-05-01), Cash

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