Patent ID: 6287204
Filing Date: 2001-09-11
Classification: B65H,F16D,H02K,Y10T

Abstract:
A torque limiter, comprising:a shaft having two axial ends,a cylindrical magnet attached to an outer periphery of the shaft,a housing for rotationally supporting the axial ends of the shaft, said housing being formed of first and second housing portions with cylindrical portions,a magnetizable member in a cylindrical shape attached to the inner peripheries of the cylindrical portions of the first and second housing portions to thereby form a space between the cylindrical portions of the first and second housing portions, said magnetizable member having an inner periphery facing an outer periphery of the magnet with a predetermined gap therebetween when the magnet is inserted into the magnetizable member, anda ring containing magnetizable materials therein and attached to the space on an outer periphery of the magnetizable member, said ring changing an apparent volume of the magnetizable member to thereby change torque of the torque limiter.