Motor/angle piece unit for dental purpose, has motor and angle piece, which are provided with front surfaces having contacts that are raised in break out by base surface and/or are arranged in projection in returning manner by cover surface

摘要

The unit has a motor (10) and an angle piece (20), which are provided with respective front surfaces (11, 21). The surface (11) is provided with a break out (12), and the corresponding surface (21) is provided with a projection (22) complementary to the break out. The surfaces are provided with contacts (13, 23), which cooperate with one another. The contacts are raised in the break out by a base surface, which lies deeply opposite to the surface (11), and/or are arranged in the projection in a returning manner by a cover surface provided opposite to the front surface (21).