Improved fastener and fastener tightening/loosening device

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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Details

F16B 35/04 (2006.01) B25B 21/00 (2006.01) F16B 23/00 (2006.01) F16B 39/00 (2006.01) F16B 39/12 (2006.01) F16B 39/28 (2006.01)

Patent

CA 2616598

A fastener comprising a head part having an internally threaded hole extending from one side of the head part to another side of the head part, an externally threaded shank in threaded engagement with the internally threaded hole of the head part, the shank presenting external thread for threaded engagement by a nut, and an externally threaded locking part in threaded engagement with the internally threaded hole of the head part, wherein the shank and the locking part are in contact with each other inside the hole, such that the locking part resists against travel of the shank through the threaded hole.

La présente invention concerne une pièce de fixation comprenant une tête qui présente un trou taraudé à l'intérieur s'étendant d'un côté à l'autre de la tête, une tige filetée à l'extérieur en prise par vissage avec le trou taraudé à l'intérieur de la tête, la tige présentant un filet extérieur pour entrer en prise par vissage avec un écrou, et une partie de verrouillage fileté à l'extérieur en prise par vissage avec le trou taraudé à l'intérieur de la tête, la tige et la partie de verrouillage étant en contact mutuel à l'intérieur du trou, de telle sorte que la partie de verrouillage résiste au déplacement de la tige à travers le trou taraudé.

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