| 摘要 |
A differential gear drive mechanism for a vehicle employing an input drive shaft and a differential pinion shaft journaled for rotation about spaced parallel axes within a differential housing and meshing gears mounted on each shaft for connecting the two. The gear may quickly be replaced to change the drive ratio of the mechanism by removing a cover plate over an access opening in the housing adjacent one end of the two shafts. A selectively operable coupling device is provided to connect and disconnect one of the shafts from the gear train, and parallel gear trains may be employed between the two shafts with the coupling device being operable to connect one or the other gear trains alternatively to the associated shaft to permit the drive ratio to be changed without opening the differential housing.
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