Continuously-geared automatic transmission with controlling brakes

摘要

A transmission having an input shaft with an input sun gear and a reverse rotation control shaft with a reverse rotation sun gear rotatably secured to the input shaft. A first and a second carrier, terminating in an output shaft, are rotatably secured on the reverse rotation control shaft and input shaft, respectively. Locking pins interconnect the first and second carriers to enable simultaneous rotation of the carriers. Input planetary gears are in mechanical communication with the input sun gear. A reverse rotation planetary gear and an input planetary gear are interconnected and each such interconnected gear is rotatably mounted on a locking pin to enable simultaneous rotation of the interconnected gears about the locking pin. Each reverse rotation planetary gear is in mechanical communication with the reverse rotation sun gear. A low speed ring gear is rotatably secured on the second carrier. A low speed brake applies braking force to the low speed ring gear to initiate rotation of the output shaft and low speed rotation of the output shaft. A reverse rotation brake applies braking force to the reverse rotation control shaft to provide a reverse rotational output of the output shaft. An interlocking mechanism couples the rotational speed of the input shaft and the reverse rotation control shaft to provide medium and high speed rotation of the output shaft.