Method and apparatus for excluding water or other material from

Details Method and apparatus for excluding water or other material from Method and apparatus for excluding water or other material from

1975-02-21

1976-08-17

Shapiro, Jacob

Ammunition and explosives

Igniting devices and systems

86 20C, 102 23, E02D 1918, E42D 100

Patent

active

039746569

ABSTRACT:
A method and apparatus for excluding water and other materials from a blast hole in rock for extended periods of time by inserting an expandable sleeve into the hole; sealing the sleeve with a closure means including a plug disposed in the sleeve, which closure means acts to exert increasing pressure between the plug and the wall to thereby seal the sleeve against the plug; and expanding the sleeve through an inlet conduit in the closure using compressed gas.

REFERENCES:
patent: 2930276 (1960-03-01), Smith et al.
patent: 3199399 (1965-08-01), Gardner
patent: 3357193 (1967-12-01), Fitzgibbon, Jr.

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