Patent ID: 6871572
Filing Date: 2005-03-29
Classification: B06B,B26D,G01N,Y10T

Abstract:
1. A vibrational device for a tool or a manipulator comprising: a power transmission element which forms a support for the tool or the manipulator, a power generator comprising a permanent magnet part and a coil part, wherein one of the parts is fixed on a holder and another of the parts is fixed on the power transmission element, and a bending sensor for detecting oscillation amplitude of the power transmission element on the power trnasmission element, wherein the power transmission element is movable by the power generator in a predetermined oscillation direction, and is formed from a vibrational arm which is formed from a strip of flat material shaped to have a U-shaped section and has an open end and a closed free end, the open end being fixed to the holder and the closed free end being elastically bendable in the oscillation direction and substantially rigid in other directions, and wherein one component of the permanent magnet part and the coil part is fixed to the holder while another component of the permanent magnet part and the coil part is fixed to the vibrational arm.