Explosive diving tool apparatus with improved extractor
AssigneeSociete De Prospection Et D'Inventions Techniques Spit
InventorRoland Almeras
Life of this patent
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Abstract
An explosive tool driving apparatus is provided having an improved extractor mounted upon its barrel holder, and the claw of which is meant to retain the case of a propulsive charge during opening of the apparatus. A groove for passage of the claw of the extractor is formed within the barrel of the apparatus. In the firing position, the claw is disposed in front of an abutment shoulder for the collar of the case, so as to provide an initial axial clearance, the extractor is freely movable in translation between two axial stops and, during opening, is moved forwardly by the means of collar of the case the improvement thereby avoiding the hard point during opening of the apparatus
Claims11
Explosive tool driving apparatus, comprising:
- a barrel holder;
- a barrel movably disposed within said barrel holder between a firing position and an open position;
- a propulsive charge case containing a propulsive charge, for generating propulsive gases for propelling a fastener to be driven into a workpiece, and having a collar formed upon a rear portion thereof;
- bore means defined within a rear portion of said barrel for housing said propulsive charge case;
- notch means defined within said barrel holder for defining first rearward and second forward stops;
- and
- an extractor movably mounted upon said barrel holder between first rearward apparatus-firing and second forward apparatus-opening positions, and having engagement means disposed within said notch means of said barrel holder so as to be interposed between said first and second stops, and an extraction claw for engaging said collar of said propulsive charge case during opening of said apparatus so as to remove said propulsive charge case from said housing bore means of said barrel,
- wherein when said apparatus is disposed at said firing position, said extractor is disposed at said first rearward position at which said engagement means of said extractor, disposed within said notch means of said barrel holder, is engaged with said first rearward stop such that a front end portion of said extractor engagement means is spaced from said second forward stop of said notch means so as to define an axial distance (J) therebetween while said extraction claw is spaced from said collar of said propulsive charge case so as to define an axial distance (t) therebetween, while when said barrel is moved toward said open position, said collar of said propulsive charge case engages said extraction claw of said extractor so as to move said extractor forwardly whereby said engagement means of said extractor engages said second forward stop of said notch means so as to prevent further forward movement of said extractor and said propulsive charge case whereby said propulsive charge case is extracted from said bore means of said barrel as said barrel continues to move forwardly toward said open position.
Dependencies are inferred from the claim text.