Patent ID: 6138887
Filing Date: 2000-10-31
Classification: B25C

Abstract:
Device for fixing a plug in a support (100), comprising a piston (6) adapted to be propelled by compressed gas, a cylinder (5) in which the piston (6) is mounted, a combustion chamber (3) formed between the piston and a cylinder head (2), a combustion chamber sleeve (4) movably mounted to close the chamber (3) at a rear thereof through contact with the cylinder head (2), a plug guide (8) acting as a probe for placement in abutment with the support (100) said plug guide (8) including a pushing surface (30) and said sleeve (4) supporting an abutment surface (29) which surfaces (30, 29) are arranged to be fixedly attached to each other during rearward translational movement of the sleeve (4) when the plug guide (8) is placed into abutment with said support (100) and which rearward displacement of the sleeve (4) closes the combustion chamber (3), said surfaces (30, 29) detaching from each other upon recoil of the device in reaction to firing in order to ensure that the plug guide (8) is kept in abutment against the support (100) during said recoil, said plug guide (8) being in coaxial alignment with one of said plugs in a firing position to thereby guide said plug upon firing.