Driver bit and driver

B - Operations – Transporting – 25 – B

Patent

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Details

B25B 23/00 (2006.01) B25B 15/00 (2006.01)

Patent

CA 2343269

A driver bit and a driving tool having a plurality of projections (14, 24, 32) formed on at least one surface (12, 24) of the shank portion/driving portion of the bit/tool (10) to retain the bit in a bit holder, or to retain a socket or the like on the driving tool. The projections are formed such that the geometric envelope (30) of the bit is within the tolerance of the bit holder, so that the bit can be used with standardized holders. When torque is applied to the bit or driving tool, the projections (14, 24, 32) engage the inner surface of a standardized holder/socket, thereby retaining the bit/socket.

Cette invention se rapporte à une mèche tourne-vis et à une visseuse automatique qui comportent plusieurs saillies (14, 24, 32) formées sur au moins une surface (12, 24) de la partie tige ou de la partie tourne-vis de la mèche ou de la visseuse automatique (10), afin de retenir la mèche sur le mandrin porte-mèche ou afin de retenir une douille ou similaire sur la visseuse automatique. Ces saillies sont formées pour que l'enveloppe géométrique (30) de la mèche ne dépasse pas la tolérance du mandrin porte-mèche, de telle sorte qu'on puisse utiliser la mèche de mandrins standardisés. Lorsqu'un couple est appliqué à la mèche ou à la visseuse automatique, les saillies (14, 24, 32) viennent en prise avec la surface interne du mandrin ou de la douille standardisés retenant ainsi la mèche ou la douille.

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