Four-wheel drive vehicle transmission
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United States of America Patent
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-
Aug 25, 2009
Grant Date -
Jun 2, 2005
app pub date -
Oct 15, 2002
filing date -
Oct 16, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A four-wheel-drive vehicle transmission (1) having a drive torque input shaft (8) rotated about a first axis of rotation (A); a front output shaft (10); a rear output shaft (12); an auxiliary tubular shaft (14) mounted alongside the input shaft (8) to rotate about a second axis of rotation (D); at least one first group of gears (15, 16) for selectively connecting the auxiliary tubular shaft (14) to the input shaft (8); a first countershaft (17) mounted inside the auxiliary tubular shaft (14); a second countershaft (18) mounted for rotation opposite the first countershaft (17); a planetary gear train (19) for mechanically connecting the auxiliary tubular shaft (14) to the first (17) and second (18) countershafts; and a first (25) and a second (26) cascade gear set for connecting the first and second countershafts (17,18) to the front and rear output shafts (10,12), respectively.
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