| 摘要 |
Shiftable gears arranged to minimize the need for synchronizers by utilizing, and/or avoiding, related environmental factors. In an environment where one ratio gear is always running faster than a second ratio gear, so that a shaft to which some are alternately connected must always be accelerated when said one gear is so connected and decelerated when the second gear is so connected, means are provided by which a nonrotating shift device, as a shift fork, is caused to apply a frictional drag to the shaft when the second gear is being connected and said shaft is isolated from such drag when the first gear is being connected. In a further and more specific aspect of the invention, ratio gears so connected are arranged between a main transmission and an auxiliary transmission and/or a split-shift device to extend the ratios available to the system but without adding to the synchronizers required for same. |
