Drive system for providing a multiple speed outlet in a single rotational direction from a reversible input

摘要

A drive system for providing multiple output speeds in a single direction based upon a reversible input is disclosed. The drive system provides a dual drive path from an input to an output such that each separate drive path is capable of an overall gear ratio different from that of the other drive path. The drive path is selected by the direction of rotation of the input and is configured such that regardless of the drive path selected, the rotation of the output of the drive system will be in a single direction. The drive system utilizes two parallel auxiliary shafts disposed perpendicularly to a single drive shaft and an output shaft disposed parallel to the two auxiliary shafts. Both auxiliary shafts engage the drive shaft such that they are driven by the rotation of the drive shaft in directions opposite each other. Both auxiliary shafts have one way roller clutches disposed thereon so that the output will only be driven by one or the other of the auxiliary shafts depending on the direction of rotation of the drive shaft. The drive system of the present invention may be used in items such as commercial appliances to provide flexibility in selection of output speeds while maintaining a compact and easily serviced drive system.