Integrated vehicle manual transmission and clutch with planetary gear arrangement
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United States of America Patent
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-
Jun 18, 2002
Grant Date -
N/A
app pub date -
Oct 1, 1999
filing date -
Oct 1, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle transmission system includes a planetary gear arrangement that replaces the conventional clutch and range gear box. The planetary gear arrangement integrates the functions of a clutch and a range gear box while automating portions of the necessary operation of a manual transmission. The planetary gear arrangement preferably includes an automated actuator that selectively engages different portions of the planetary gear arrangement to provide at least two gear reduction ratios between an engine output member and the transmission main gear box. The automated actuator preferably moves the planetary gear arrangement between a first operative position for a first gear reduction ratio is provided, a second operative position where a second gear reduction ratio is provided and third operative position where the transmission input shaft, which preferably rotates in unison with a rotating engine output member, is uncoupled from the transmission output shaft. The first and second operative positions provide high and low range operation, respectively. The third operative position is used whenever a driver desires to shift gears or place the transmission into neutral.
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