Expanding detonation chamber multi-shot gas exploder

Details Expanding detonation chamber multi-shot gas exploder Expanding detonation chamber multi-shot gas exploder

1976-01-19

1977-02-15

Birmiel, Howard A.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

173135, 227 9, G01V 112

Patent

active

040078035

ABSTRACT:
An expandable ignition chamber within an upstanding cylinder is formed between its base and a massive free piston. Initial detonation of a combustible gas mixture within the chamber drives the piston upwardly to expose in sequence a series of vertically spaced gas inlets in the cylinder wall, through which the supply of gas is replenished to support a corresponding sequence of additional rapidly timed detonations. Repetitive seismic pulses are thereby supplied by the downward thrust of the base which is itself slidable with respect to the cylinder walls.

REFERENCES:
patent: 3198282 (1965-08-01), Dunaway
patent: 3215233 (1965-11-01), Kirby et al.
patent: 3429396 (1969-02-01), Jenner et al.
patent: 3958661 (1976-05-01), Dransfield et al.
patent: 3967688 (1976-07-01), Inenaga et al.

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