Compression actuated tool for driving fasteners

B - Operations – Transporting – 25 – C

Patent

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Details

B25C 1/14 (2006.01) B25C 1/18 (2006.01)

Patent

CA 2174725

This invention relates to an impact actuated tool (10) for driving a fastener (30) by an explosive charge, particularly a tool (10) having a housing (12) witha barrel (16) axially slidably mounted within the front end. A nosepiece (34) is fixed to the front of the barrel (16) with a muzzle (28) at its front end forreceiving a fastening element that is to be secured in a ceiling or the like. A piston (20) is slidably mounted within the bore in the barrel (16). The barrel (16) is biased forwardly in the firing direction. At the rear of the tool (10) ahandle (50) engages a firing pin (26) which is biased rearwardly towards the back end of the tool (10). One embodiment of the tool (10) includes a ball lock safety device (90) to allow discharge only when the muzzle (28) of the tool (10) is pointed in an upward direction. The tool (10) is fired by impactingthe nosepiece (34) against a surface to effect displacement of the barrel (16) and firing pin (26) against their respective biasing means.

L'invention se rapporte à un outil à percusion (10) destiné à planter un élément de fixation (30) à l'aide d'une charge explosive. On décrit en particulier un outil (10) dont le boîtier (12) est équipé d'un canon (16) monté axialement coulissant à l'intérieur de son extrémité avant. Un embout (34), fixé à l'avant du canon (16), possède une bouche (28) recevant l'élément de fixation à planter dans un plafond ou autre. Un piston (20) est monté coullisant à l'intérieur du canon (16). Le canon (16) est poussé vers l'avant dans le sens de la mise à feu. A l'arrière de l'outil (10), une poignée (50) vient en prise sur un percuteur (26), qui est poussé vers l'arrière en direction de la partie postérieure de l'outil (10). Un mode de réalisation de l'outil (10) comprend un dispositif de sécurité à verrouillage à billes (90), n'autorisant la décharge que lorsque la bouche (28) de l'outil (10) est pointée vers le haut. L'outil (10) est mis à feu par appui de l'embout (28) contre une surface, ce qui à pour effet de provoquer le déplacement du canon (16) et du percuteur (26) vers leur moyens de poussée respectif.

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