Patent ID: 6162143
Filing Date: 2000-12-19
Classification: F16H

Abstract:
A two speed transmission formed as a pre-transmission for an auxiliary aggregate in motor vehicles, comprising a drive shaft which forms an input shaft; a driven shaft which forms an output shaft; and a planetary transmission which couples said drive shaft with said drive shaft; said planetary transmission having a planetary carrier which is non rotatably arranged on said drive shaft and carries least one inner planetary gear which rolls on a sun gear, said inner planetary gear being coupled with an outer planetary gear turnably supported around a rotary axis of said inner planetary gear, said outer planetary gear rolling on a hollow gear which is non rotatably arranged on said drive shaft, said hollow gear having an inner toothed rim and an outer toothed rim, said outer planetary gear rolling on said inner toothed rim or on said outer toothed rim of said hollow gear, depending on an input rotary speed of said drive shaft; and an elastic element through which said outer planetary gear is supported on said planetary carrier.