Cartridge for explosively operated industrial tools

B - Operations – Transporting – 25 – C

Patent

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Details

B25C 1/16 (2006.01) F42B 5/26 (2006.01) F42B 39/20 (2006.01)

Patent

CA 2184381

A cartridge (24) for explosively operated industrial tools (10) is disclosed. The tool is of the type that has a piercer pin (46) that pierces through a surface of the cartridge during assembly of the cartridge within the tool. Then, upon firing of the cartridge, the residual gases formed by the explosion are vented to the atmosphere by moving the piercer pin out of the pierced opening. The present cartridge includes a depression (64) in a surface of the base (62) that is in alignment with the piercer pin (46). There is a relatively thin section (66) of the base left at the bottom of the depression. The thin section is sized so that when it is unsupported, as for example when a defective piercer pin is used, it will fracture under the forces of the exploding powder and the residual gases formed by the explosion will be vented through the fracture and into the atmosphere.

La présente invention concerne une cartouche (24) pour outils industriels à détonation (10). Ce type d'outil comporte un pointeau perforateur (46) qui perce une surface de la cartouche pendant le montage de la cartouche dans l'outil. Lors la mise à feu de la cartouche, les gaz résiduels produits par l'explosion sont évacués dans l'atmosphère après que le pointeau perforateur se soit dégagé de la perforation. Sur une surface de sa base (62), la cartouche de la présente invention comporte un creux (64) dans l'alignement du pointeau perforateur (46). Une section (66) relativement mince de la base reste au fond du creux. Cette section fine est dimensionnée de sorte que lorsqu'elle n'est pas soutenue, par exemple lorsque l'on utilise un pointeau perforateur défectueux, elle se fracture sous les forces dégagées par la poudre en explosant et que les gaz résiduels produits par l'explosion soient évacués dans l'atmosphère par cette fracture.

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