Countershaft automatic transmission
This patent describes a multiple speed ratio transmission for use in delivering torque from an engine comprising: an output shaft; an input pinion continuously driven by the engine; first clutch means for selectively connecting the engine to the output shaft; a countershaft mounted for rotation parallel to the output shaft; gearing defining multiple pairs of meshing gears and pinions including a first group of such pairs having the gears rotatably mounted on the output shaft and the pinions formed integrally with a gear wheel. The pinions are rotatably mounted on the countershaft and driven from the input pinion. The gearing further includes a second gear-pinion pair having the gear of the second gear-pinion pair rotatably mounted on the output shaft and the pinion of the second gear-pinion pair non-rotatably connected to the countershaft; second clutch means for selectively driveably connecting the input pinion to the countershaft; first coupler means for selectively driveably connecting the gear of a gear-pinion pair of the first group to the output shaft; and second coupler means for selectively driveably connecting the gear of the second gear-pinion pair to the output shaft.
- Assignee:
- Ford Motor Co., Dearborn, MI
- Patent Number(s):
- US 4693129
- OSTI ID:
- 5907415
- Resource Relation:
- Patent File Date: Filed date 25 Jun 1984
- Country of Publication:
- United States
- Language:
- English
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