Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1986-11-14
1987-11-17
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
74526, G05G 502, G05G 912
Patent
active
047065141
ABSTRACT:
The gear shift mechanism according to this invention includes a selector shaft, rotatable by means of a shift lever for selecting various gear shift channels and axially displaceable for engaging the selected gear. The selector shaft carries a shift finger for engagement with the selector forks in the respective gear shift channels and a selector finger, which engages the slots of an internal shift gate to constrain the movement of the selector shaft. To prevent inadvertent engagement of the reverse gear, a pawl is rotatably mounted on the selector finger and is held by a spring biased detent in one of two stable angular positions, which are aligned with and perpendicular to the direction of the gear shift channels. A stop and at least one control pin are provided on the gate plate to cooperate with the pawl. The control pin changes the angular position of the pawl during gear selection movement of the selector finger relative to the gate plate and the stop prevents engagement of reverse gear when the pawl is aligned with the gear shift channels.
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Ford Motor Company
Harrington Donald J.
Herrmann Allan D.
McKenzie Frank G.
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