Patent ID: 6126442
Filing Date: 2000-10-03
Classification: A61C

Abstract:
A motorized handpiece for driving a tool which can be coupled to the motorized handpiece, comprising:an electric motor including a supply line for receiving electrical current;a clamping mechanism including an elastic member for clamping a tool in a force-locking manner;a shaft arrangement for transmitting rotary movement of the motor to the clamping mechanism, and hence, to a tool retained with the clamping mechanism, the shaft arrangement comprising an integrally formed shaft on which the motor and the clamping mechanism are arranged;a first handpiece part and a second handpiece part, the motor and supply line being arranged in the first handpiece part and the elastic member being arranged in the second handpiece part, the elastic member being adapted to impart a tool retaining force to the clamping mechanism; andwherein the shaft is mounted at first and second bearing sites within the second handpiece part and respectively disposed at opposing ends of the second handpiece part, and the shaft including a shaft section extending unsupported from the second bearing site and into a stator of the motor.