COUPLING DEVICE BETWEEN A DRIVE SHAFT AND A DRIVEN SHAFT OF A DENTAL OR SURGICAL HANDPIECE

摘要

The invention relates to a coupling device between a drive shaft (1A; 10A; 110A; 210A; 310A) and a driven shaft (1B; 10B; 110B; 210B; 310B) of a dental or surgical handpiece (12; 112), this device comprising a resilient connection member (6; 60; 160; 260; 360; 460) that connects the drive shaft to the driven shaft, characterized in that the resilient connection member comprises at least one thread turn (6A; 60A; 160A; 260A), of which a cross section (S1; S2) is respectively square or rectangular. The invention also relates to such a device provided on an articulated handpiece.