F - Mech Eng,Light,Heat,Weapons – 42 – B
Patent
F - Mech Eng,Light,Heat,Weapons
42
B
102/11, 86/5
F42B 3/00 (2006.01) F42B 3/02 (2006.01) F42B 3/26 (2006.01) F42B 33/02 (2006.01)
Patent
CA 1107142
EXPLOSIVES PACKAGE ABSTRACT OF THE DISCLOSURE An explosives package is disclosed comprising a plastic tubular container having male and female ends ada- pted to be coupled with like containers to form a column, and primer and blasting explosives contained therein. The container is open at both ends and has an internal circum- ferential ring seat. The ring seat and open end of the con- tainer enables a cast primer composition to be poured through the open end onto a piston which is in fluid-tight relationship with the ring seat. A capwell thimble is in- serted into and retained in the side of the male end of the container so that the closed end of the capwell is situated within the cast primer composition. The male end of the container in the area of the capwell is adapted to provide protection for the legwires of a blasting cap inserted in the capwell from being nipped or damaged by other, coupled, containers or borehole walls; the protection is preferably provided by a depression around the capwell entrance and a longitudinal channel leading therefrom, on the exterior of the container. Subsequent to pouring the cast primer comp- osition into the container and allowing the composition to solidify, the piston is removed from the container and a blasting explosive e.g. a slurry explosive in a "chub" package is inserted into the container and is retained there- in by a closure disc. The primer and blasting explosive are in abutting relationship within the container. The explosives package is particularly useful in seismic prospecting applications.
311787
Du Pont Canada Inc.
Mccallum Brooks & Co.
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