Patent ID: 6083181
Filing Date: 2000-07-04
Classification: A61H

Abstract:
A massaging device for insertion in the back of massage chairs, comprising: an upper shaft and a lower shaft having parallel and substantially horizontal axes and respective eccentric portions; two arms, each whereof supports a massage wheel which is rotatable about its own axis; each of said arms supporting, proximate to one of ends thereof, the corresponding massage wheel and being connected, proximate to an opposite end, to one of said eccentric portions of said upper shaft and, at an intermediate region, to one of said eccentric portions of said lower shaft; means being provided for rotating said shafts about said respective parallel and substantially horizontal axes for an alternating movement of said massage wheels in a substantially horizontal direction and in a substantially vertical direction, said means for rotating said shafts comprising an upper gearmotor which actuates said upper shaft and a lower gearmotor which actuates said lower shaft, wherein said upper and said lower gearmotors are constituted by an electric motor and by a reduction unit with a worm screw which is connected to a shaft of the electric motor and a helical gear which meshes with said worm screw and is connected respectively to an intermediate portion of said upper shaft and to an intermediate portion of said lower shaft.