Keyless chuck

Details Keyless chuck Keyless chuck

B - Operations, Transporting

23

B

B23B 31/12 (2006.01)

Patent

CA 2193694

A three-jaw (34) chuck is provided with a unitary nut (48) rotatably mounted relative the body (16) and a retaining member (46) located so as to contact a portion of the unitary nut (48) to prevent axial movement of the nut (48) in the forward direction. The nut (48) may include a first portion (56) of a first outside diameter and a second portion (58) extending axially outward from the first portion with an outside diameter less than the first outside diameter. A sleeve retaining snap ring (70) may be provided engaging the sleeve (12) for retaining the sleeve (12) on the body (16).

Mandrin à trois mors (34) muni d'un écrou (48) monté tournant par rapport au corps (16) et d'un élément limiteur (46) positionné de façon à buter sur une partie de l'écrou (48) pour en bloquer les mouvements vers l'avant. L'écrou peut comporter une première portion (56) d'un premier diamètre extérieur et une seconde portion (58) saillant axialement vers l'extérieur et dont le diamètre extérieur est inférieur à celui de la première portion. On peut en outre prévoir un anneau de retenue (70) s'engageant dans la douille (12) et la maintenant sur le corps (16).

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