Transmission shift control detent mechanism

Details Transmission shift control detent mechanism Transmission shift control detent mechanism

1996-10-22

1998-07-07

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

74540, F16H 6338

Patent

active

057751650

ABSTRACT:
A transmission shift control has a detent mechanism to provide a shift effort so that the operator has a sense of feel during shifting between ranges. During a manual shift between reverse and park, the shift effort or "detent feel" is normally higher than the effort occurring during manual shifts between other ranges. The detent mechanism providing the "detent feel" is comprised of a spring-biased roller in a notched detent plate comprised of rises and valleys. The spring urges the roller against the notched surface on the plate. The ramps or rises provide increased shift effort during movement of the plate from range to another. In each range, the spring-biased roller is disposed in the appropriate valley. A channel is formed in the plate to provide a path for the roller, such that the park to reverse shift effort is less than the reverse to park effort.

REFERENCES:
patent: 5220984 (1993-06-01), Ruiter
patent: 5542512 (1996-08-01), Mashara
patent: 5598740 (1997-02-01), Itoh

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