| 摘要 |
PCT No. PCT/US90/00466 Sec. 371 Date Jul. 5, 1991 Sec. 102(e) Date Jul. 5, 1991 PCT Filed Jan. 26, 1990.A stepless transmission is provided with an input shaft (3004) having gear structure. A variator shaft (3014) including adjustable diameter pulleys (3018) and (3032) connected between the input shaft and the variator shaft. The variator alters the relative speeds of rotation between the input shaft and the variator shaft. An output shaft has gear structure (3054) that is operatively connected to the input shaft gear structure (3010) and the variator shaft gear structure (3042). The speed and direction of rotation of the output shaft (3048) is related to the difference between the tangential velocities of the input shaft gear structure and the variator shaft gear structure acting on the output shaft gear structure. Controls for the transmissions are also disclosed. The controls (3060) act to slow or speed the output of the transmission or to change the direction of the output. A braking system 3080) is provided which will act in either direction of rotation to return the transmission to the neutral position and to hold it there.
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