Patent ID: 7207798
Filing Date: 2007-04-24
Classification: A61C,Y10T

Abstract:
1. A mechanized dental instrument comprising an active part, and a sleeve arranged at an end of the dental instrument which is remote from the active part, wherein the sleeve of the dental instrument is provided with a rotary drive which, when mounted in a head of a handpiece, is capable of directly meshing with a rotary drive located upstream of the head of the handpiece, wherein the active part includes an axle, and wherein the rotary drive is produced from a flat metal piece which is fixed to the active part by being slid over the axle of the active part, and wherein the piece is provided with at least one opening which is formed by a combination of flats formed on the axle of the active part and a central orifice associated with the rotary drive, and which is shaped to permit plastic material forming the sleeve to circulate in the opening during molding of the sleeve on the axle to ensure connection of the rotary drive on the axle.