DEVICE FOR THE EXCITEMENT OF TORSIONAL VIBRATIONS Russian patent published in 1995 - IPC

FIELD: vibration engineering. SUBSTANCE: exciter of torsional vibrations has a flat spiral spring made of current-conducting material and mounted in the gap of the magnetic system parallel to its butts. The internal and external ends of the spiral are hard-mounted on the corresponding axles, one of which is made with the possibility of free axial rotation. The spiral ends are in a short way connected with each other. The magnetic system has an alternating-current winding. EFFECT: simpler design. 2 dwg