| 摘要 |
<p>A transmission (10) has first, second and third motion transmitting members (12, 14, 16) which initiate driving direction, such as forward or reverse, control output speed and maintain differential operation of the transmission, respectively. In space critical applications, such as small utility tractors, for example, transmission size must be kept to a minimum to accommodate accessories and reduce overall tractor dimensions. In the transmission (10), the third member (16) or differential is carried by a support member (36), such as a shaft (66), and drives output elements (24,26) connected to tractor axles. The second member (14), controlling axle speed, is positioned about and longitudinally along an axis (40) of the support member (36) and drives the third member (16). Driving direction is initiated by controlling rotational input through the first member (12) to drive the second member (14). Thus, the transmission (10) is made compact by closely positioning the speed control and differential portions relative to one support member (36), such as the shaft (66), in the transmission (10).</p> |
