Gear train of automatic transmission for vehicle

Details Gear train of automatic transmission for vehicle Gear train of automatic transmission for vehicle

2011-07-19

2011-07-19

Shriver, II, J. Allen (Department: 4127)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S277000, C475S330000, C475S288000, C475S282000

Reexamination Certificate

active

07980985

ABSTRACT:
A gear train of an automatic transmission for a vehicle may include four planetary gear sets with three clutches and two brakes and realizes eight forward speeds, and the gear train of an automatic transmission for a vehicle may minimize the number of friction elements, simplify the scheme of an transmission, and enhance transmitting power efficiency and fuel efficiency. The four planetary gear sets may include a first planetary gear set including a first sun gear, a first planet carrier, and a first ring gear, a second planetary gear set including a second sun gear, a second planet carrier, and a second ring gear, a third planetary gear set including a third sun gear, a third planet carrier, and a third ring gear, and a fourth planetary gear set including a fourth sun gear, a fourth planet carrier, and a fourth ring gear.

REFERENCES:
patent: 7614975 (2009-11-01), Seo
patent: 7878934 (2011-02-01), Lee
patent: 2008/0103015 (2008-05-01), Seo
patent: 2009/0247351 (2009-10-01), Seo et al.
patent: 2009/0280947 (2009-11-01), Seo et al.

Affiliated with

Also associated with

Rating

Gear train of automatic transmission for vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gear train of automatic transmission for vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gear train of automatic transmission for vehicle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2701563