F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/110
F16B 25/00 (2006.01) F16B 15/06 (2006.01)
Patent
CA 1248374
ABSTRACT OF THE DISCLOSURE A wood screw comprising a metallic rod with a threaded portion formed along one extremity of the rod and having helical turns. The screw has an enlarged head at an end opposite the said extremity. An unthreaded smooth cylindrical portion merges with the threaded portion and extends from the threaded portion toward the head. A smooth frustoconical neck section of lesser diameter than the head is interposed between the head and the unthreaded smooth cylindrical portion. The turns have an outer diameter exceeding that of the unthreaded portion and a root diameter slightly less than that of the unthreaded portion. The neck section has a maximum diameter substantially equalling the outer diameter of the helical turns.
435887
Rockenfeller Gottfried
Rockenfeller Wolfgang
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Rockenfeller Kg Befestigungselemente
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