Patent ID: 7670048
Filing Date: 2010-03-02
Classification: A61B,F16M,F16P

Abstract:
1. A drive unit for vertical or horizontal movement of a moving component of a diagnostic X-ray device, comprising a motor and gear unit, a pulley mounted on a drive shaft of the motor and gear unit, and traction means wound around the pulley, the moving component being either attached to the traction means or connected with the drive unit, wherein the motor and gear unit is rotatable about the axis of the drive shaft against the elastic force of a balancing spring, wherein the rotatable motor and gear unit is spring-loaded by preloading springs that define an equilibrium angular position of the motor and gear unit for detecting a collision occurring anywhere on the moving component, further comprising a rotation sensor adapted for detecting a rotation of the motor and gear unit for generating a corresponding rotation detection signal and for activating a switch to stop the movement when a collision is detected.