| 摘要 |
A mechanism for selectively and/or automatically decelerating and positively reversing the normal direction of rotation of a rotatable shaft is provided. The mechanism includes a member which is meshingly engaged to a shaft driven by a one-way drive, such as the input shaft of a change gear transmission driven by a Diesel engine, and is operable to decelerate the shaft and positively rotate the shaft in the opposite direction of rotation. |
