Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1997-06-06
1999-03-09
Ta, Khoi Q.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
7447319, 74335, 74 8915, F16H 6134
Patent
active
058786244
ABSTRACT:
A transfer case having a two-speed drive assembly includes a directly coupled shift operator with feedback. The shift operator includes an electric, pneumatic or hydraulic motor which directly, rotatably drives a shift rail. The shift rail includes threads and receives a shift fork having complementary threads. The shift fork engages a dog clutch. Bi-directional rotation of the shift rail correspondingly bi-directionally translates the shift fork to select direct drive (high gear), reduced speed drive (low gear) or neutral operation of the two-speed drive assembly. A shift rail position sensor provides data to associated logic and command circuitry regarding the actual position of the shift fork.
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Schoenbach Ronald A.
Showalter Dan J.
Borg-Warner Automotive Inc.
Dziegielewski Greg
Ta Khoi Q.
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