Mechanised dental instrument

A - Human Necessities – 61 – C

Patent

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Details

A61C 1/08 (2006.01) A61C 3/00 (2006.01)

Patent

CA 2515797

The invention relates to a mechanised dental instrument consisting of an active part (2) and a sleeve (3) arranged on the end opposing said active part, said sleeve (3) being provided with a rotating drive means (4) that can directly engage, in the assembly position, in the head of a handpiece, with a rotating drive means located upstream of the head of the handpiece. The invention is characterised in that the drive means (4) is produced from a flat metallic piece which is fixed, especially by being slid over the axle (2a) of the active part (2), and is provided with at least one opening (5) that is shaped in such a way as to enable the circulation of the plastic material forming the sleeve (3) during the moulding over said axle (2a) and to thus ensure the connection of the rotating drive means on the axle (2a).

La présente invention concerne un instrument dentaire mécanisé constitué d'une partie active (2) et d'un manche (3) disposé à l'extrémité opposée à ladite partie active, ledit manche (3) de l'instrument dentaire étant pourvu d'un moyen d'entraînement (4) en rotation susceptible d'engrener en position de montage dans une tête d'une pièce à main directement avec un moyen d'entraînement en rotation situé en amont de la tête de la pièce à main, caractérisé en ce que le moyen d'entraînement (4) est réalisé à partir d'une pièce métallique plate rendue solidaire, notamment par emmanchement sur l'axe (2a) de la partie active (2), et est munie d'au moins une ouverture (5) conformée de telle sorte à permettre la circulation de la matière plastique formant le manche (3) lors de la phase de surmoulage sur ledit axe (2a) et à assurer ainsi la liaison du moyen d'entraînement en rotation sur l'axe (2a).

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