Multiple gear stage automatic transmission

Details Multiple gear stage automatic transmission Multiple gear stage automatic transmission

Filed on

2006-09-12

Date issued

2006-09-12

Examiner

Ho, Ha (Department: 3681)

Patent Class

Planetary gear transmission systems or components

SubClass

With means to vary drive ratio or disconnect drive

SubSubClass

Plural elements selectively braked

Other Related Categories

C475S275000

Type

Reexamination Certificate

Status

active

Patent number

07104915

Description

ABSTRACT:
A multiple stage transmission comprises three planetary gear sets (P1, P2, P3), at least six rotatable shafts (1, 2, 3, 4, 5, 6), brakes (03, 04) and clutches (13, 15, 46, 56), the drive shaft (1) being permanently connectable with the ring gear of the first planetary gear set (P1) and via one clutch (15) with the shaft (5) which is connected with the sun gear of the second planetary gear set (P2) and the sun gear of the third planetary gear set (P3) and via the clutch (56) connectable with the shaft (6), the driven shaft (2) being connected with the spider of the third planetary gear set (P3) and the ring gear of the second planetary gear set (P2), the shaft (3) being permanently connected with the ring gear of the third planetary gear set (P3), via one clutch (13) connectable with the drive shaft (1) and via one brake (03) attachable to the housing (G) and the sun gear of the first planetary gear set (P1) being non-rotatably connected via one shaft (0) with the housing (G).

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