Ammunition and explosives – Igniting devices and systems
Patent
1974-01-29
1976-06-01
Pendegrass, Verlin R.
Ammunition and explosives
Igniting devices and systems
102 25, 299 13, 102 218, F42B 306
Patent
active
039600823
ABSTRACT:
The device has a hollow housing having made therein a chamber adapted to accommoate an explosive charge, separated by a partition made of an elastomeric material for sealing the chamber from the cavity of the housing, communicating with the hole through lateral apertures in the housing. The device further includes a stem of a diameter that is lss than that of the rest of the housing, preferably threadedly secured to the bottom face of the housing. The stem has cut therein axial and radial passsages establishing communication between the cavity of the housing and the external lateral surface of the stem. A ring of an elastomeric material is received about the stem so that it closes off the openings of the radial passages in the external lateral surface of the stem. When the charge is exploded, the partition separating the chamber and the cavity is destroyed, and the gases produced by the explosion create a pulse of high pressure in the liquid filling the cavity, which pressure acts through the lateral apertures in the housing upon the walls of the hole, breaking the material. Simultaneously, this high pressure pulse in the liquid acts through the radial and axial passages in the stem upon the elastomeric ring, expanding the latter and pressing it against the wall of the hole, closing the hole and thus retaining the device in the hole.
REFERENCES:
patent: 1921229 (1933-08-01), Hodge
patent: 2034569 (1936-03-01), Ferrell et al.
patent: 2650540 (1953-09-01), Bugg
patent: 2916993 (1959-12-01), Smith et al.
patent: 3031964 (1962-05-01), Chesnut
Gavrish Petr Dmitrievich
Orlov Naum Yakovlevich
Rashesky Anatoly Nikolaevich
Sloevsky Fedor Ignatievich
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