Four-wheel drive vehicle transmission

Details Four-wheel drive vehicle transmission Four-wheel drive vehicle transmission

2002-10-15

2009-08-25

Rodriguez, Saul (Department: 3681)

Planetary gear transmission systems or components

Variable speed or direction transmission combined with...

Transmission output shaft parallel to differential output...

C475S207000, C180S248000

Reexamination Certificate

active

07578762

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.

REFERENCES:
patent: 4208923 (1980-06-01), Ikegami
patent: 4744437 (1988-05-01), Matsumoto
patent: 6780135 (2004-08-01), Shibuya

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