Machine element or mechanism – Gearing – Interchangeably locked
Patent
1987-11-19
1988-12-27
Braun, Leslie A.
Machine element or mechanism
Gearing
Interchangeably locked
74392, 74396, 74411, F16H 308
Patent
active
047932007
ABSTRACT:
A reverse idler gear shaft noise dampening arrangement for an automotive manual transmission. The reverse gear idler shaft has its free end resiliently centered in axially spaced aligned transmission housing bores by a pair of elastomeric O-rings. The bore centering O-rings position the idler shaft principal axis a predetermined distance closer to the principal axes of both the transmission output shaft and counter shaft with the transmission in its forward drive modes biasing the reverse idler gear teeth into positive contact with both the output shaft and countershaft reverse gear teeth thereby obviating backlash gear rattle. Upon reverse drive torque being transmitted from the countershaft reverse gear to the output shaft reverse gear via the idler shaft reverse gear, the reverse gear separation forces cause the O-rings to deflect from their foreward drive mode biasing state allowing the idler shaft principal axis to move a predetermined off-center distance away from both the output shaft and counter shaft principal axes. The off-center positioning of the idler shaft enables normal designed reverse torque transfer between the meshed teeth of the idler shaft reverse gear with the output shaft and countershaft reverse gears obviating excess wear of the gear teeth.
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Barthel Edward P.
Braun Leslie A.
Chrysler Motors Corporation
Diehl Dwight G.
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