Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Reexamination Certificate
2007-03-13
2007-03-13
Ho, Ha (Department: 3681)
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
C475S280000
Reexamination Certificate
active
11028148
ABSTRACT:
Durability and power transmission efficiency are enhanced in a six-speed powertrain of an automatic transmission by a scheme that includes first to forth planetary gearsets. The first planetary gearset includes a first sun gear, first ring gear, and first carrier. The second planetary gearset includes a second sun gear, a second ring gear, and a second carrier. The third planetary gearset includes operational elements of a third sun gear, a third ring gear, and a third carrier. The fourth planetary gearset includes a fourth sun gear, a fourth ring gear, and a fourth carrier. The powertrain also includes an input shaft, an output gear, and a transmission case.
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Ho Ha
Hyundai Motor Company
Morgan & Lewis & Bockius, LLP
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