Elongated-member-driving apparatus – Explosive-type driving means – With plunger
Patent
1993-11-05
1995-06-20
Smith, Scott A.
Elongated-member-driving apparatus
Explosive-type driving means
With plunger
B25C 114
Patent
active
054254884
ABSTRACT:
This invention relates to an impact actuated tool for driving a fastener by an explosive charge, particularly a tool having a housing with a barrel axially slidably mounted within the front end. A nosepiece is fixed to the front of the barrel with a muzzle at its front end for receiving a fastening element that is to be secured in a ceiling, wall or the like. A piston is slidably mounted within the bore in the barrel. The barrel is biased forwardly in the firing direction. At the rear of the tool a handle engages a firing pin which is slidably mounted within the rear end of the bore. The firing pin is biased rearwardly towards the back end of the tool. One embodiment of the tool includes a ball lock safety device to allow discharge only when the muzzle of the tool is pointed in an upward direction. The tool is fired by impacting the nosepiece against a surface to effect displacement of the barrel and firing pin against their respective biasing elements.
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