Patent ID: 7028570
Filing Date: 2006-04-18
Classification: A01B,F16H,Y10T

Abstract:
1. A transmission for varying power of a motor on a working transmission shaft and on a drive transmission shaft by operation of a shift lever for transmission to working devices and drive wheels, comprising: on the working transmission shaft, an input gear for receiving power of the motor; a constant-mesh transmission mechanism for transmitting power of the input gear to the working devices or cutting off the power; and a first gear row comprising a plurality of gears integrally mounted on the working transmission shaft; and on the drive transmission shaft, a second gear row comprising a plurality of gears rotatably mounted on the drive transmission shaft and meshing with the first gear row; and a key-sliding transmission mechanism axially movably mounted for rotating a selected one of the gears and the drive transmission shaft together to transmit power to the drive wheels; and shift members attached to the constant-mesh transmission mechanism and the keysliding transmission mechanism, respectively, the shift members being axially movable when engaged with the shift lever for effecting a shift operation.