Ammunition and explosives – Igniting devices and systems
Patent
1977-06-27
1979-07-10
Pendegrass, Verlin R.
Ammunition and explosives
Igniting devices and systems
102 24HC, 102DIG2, 166 63, 166299, 175 46, E21B 4311
Patent
active
041604121
ABSTRACT:
An earth fracturing apparatus has a casing of reactive metal containing a central, double ended charge load that is simultaneously detonated from both ends; and a pair of opposed end charges at opposite sides of the central charge load, the end charges being concavely dished toward the central charge load and having a liner of reactive metal on the dished face. The end charges are simultaneously peripherally initiated to explode with a collapsing detonation wave toward the central charge load. Void spaces between each end charge and the central charge load contain an oxidizer that may be under pressure. In a modified form of the apparatus, the end charges are omitted and the central charge load alone acts as a perforator for well pipe.
REFERENCES:
patent: 2587244 (1952-02-01), Sweetman
patent: 2775940 (1957-01-01), Klotz, Jr.
patent: 2984307 (1961-05-01), Barnes
patent: 3076408 (1963-02-01), Poulter et al.
patent: 3762326 (1973-10-01), Edgell et al.
patent: 4064935 (1977-12-01), Mohaupt
Snyer William H.
Williams Ralph E.
Wisotski John
Edgell Thomas A.
Pendegrass Verlin R.
Rost Kyle W.
Tillinghast Roberta K.
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