Locking threaded fastener

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

Patent

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Details

F16B 39/20 (2006.01)

Patent

CA 2758604

The specification discloses a locking threaded fastener (10) including a body (12), a coil spring (14), and a compression ring (16). The body is hex-shaped (18) and defines a partially threaded bore (24), an external circumferential groove (32), and a passage (34) extending radially between the bore and the groove. The coil spring is located within the bore and includes a first end (38) angularly fixed with respect to the body and a second end (40) extending through the passage and into the groove. The compression ring is located within the groove and defines an opening (44) receiving the second end of the coil spring. The compression ring is free to move within the groove and includes portions that extending radially outwardly beyond the flats (22) of the hex shape. When a conventional wrench is en-gaged with the hex shape, the wrench compresses the compression ring to prevent relative angular movement between the ring and the body.

L'invention porte sur un dispositif de fixation fileté de verrouillage (10) qui comprend un corps (12), un ressort hélicoïdal (14) et une bague de compression (16). Le corps est de forme hexagonale (18) et définit un alésage partiellement fileté (24), une rainure périphérique externe (32) et un passage (34) s'étendant radialement entre l'alésage et la rainure. Le ressort hélicoïdal est disposé à l'intérieur de l'alésage et comporte une première extrémité (38) fixée angulairement par rapport au corps et une seconde extrémité (40) s'étendant à travers le passage et à l'intérieur de la rainure. La bague de compression est disposée à l'intérieur de la rainure, et définit une ouverture (44) recevant la seconde extrémité du ressort hélicoïdal. La bague de compression est libre de se déplacer à l'intérieur de la rainure, et comporte des parties qui s'étendent radialement vers l'extérieur au-delà des plats (22) de la forme hexagonale. Lorsqu'une clé classique vient en prise avec la forme hexagonale, la clé comprime la bague de compression afin d'empêcher un mouvement angulaire relatif entre la bague et le corps.

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