Patent ID: 6716134
Filing Date: 2004-04-06
Classification: F16H

Abstract:
A speed reducer comprising:a casing; a motor mounted in a position on the casing; at least one first reduction stage (a) being at least partially housed in the casing, (b) including a drive input shaft, and (c) comprising an epicyclic reducer with a spider carrying a plurality of planetary gears meshing with a ring gear and with a sun gear, the ring gear forming part of the casing housing at least partially the epicyclic reducer; and at least one second reduction stage (a) being at least partially housed in the casing and (b) including cylindrical gears with a hollow drive input shaft and an output shaft having parallel and spaced axes, the hollow drive input shaft housing coaxially the drive input shaft of the first reduction stage with the first reduction stage being disposed at an end of the hollow drive input shaft axially remote from the position in which the motor is mounted and with the drive input shaft of the first reduction stage coupled to the hollow drive input shaft of the second reduction stage for rotation with the sun gear and the spider, respectively, for the drive transmission from the first to the second reduction stage.