Dual threaded screw for composite materials

Details Dual threaded screw for composite materials Dual threaded screw for composite materials

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 35/04 (2006.01) F16B 25/02 (2006.01) F16B 25/10 (2006.01)

Patent

CA 2559595

An improved dual threaded fastener for composite materials having a head and a shaft. The head is affixed to one end of the shaft and the shaft includes a point at its other end. The shaft includes an upper threaded portion and an upper threaded portion. The diameter of the shaft within the lower threaded portion is greater than the diameter of the shaft within the upper threaded portion. In this manner, as the fastener is rotated within the workpiece, producing remnants may be stored in the area surrounding the upper threaded portion.

Un dispositif de fixation à filet double avec tête et corps pour matériaux composites. La tête est fixée à une extrémité du corps et celui-ci est pourvu d'une pointe à l'autre extrémité. Le corps comporte une partie filetée supérieure et une partie filetée inférieure. Le diamètre du corps dans la partie filetée inférieure est supérieur au diamètre du corps dans la partie filetée supérieure. Ainsi, lorsque la vis est tournée dans la pièce de bois, les débris produits peuvent se loger dans la zone entourant la partie filetée supérieure.

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