Planetary gear transmission systems or components – With means to vary drive ratio or disconnect drive – Plural elements selectively braked
Reexamination Certificate
2007-02-06
2007-02-06
Wright, Dirk (Department: 3681)
Planetary gear transmission systems or components
With means to vary drive ratio or disconnect drive
Plural elements selectively braked
Reexamination Certificate
active
10964996
ABSTRACT:
A planetary-gear-type multiple-step transmission including a stationary member, an input rotary member, an output rotary member, and first and second transmission units. The first transmission unit has first and second intermediate transmitting paths through which a rotary motion of the input rotary member is transmittable to the second transmission unit such that a speed of the rotary motion transmitted through the second intermediate transmitting path is lower than a speed of the rotary motion transmitted through the first intermediate transmitting path. The second transmission unit constitutes first, second, third and fourth rotary modules, each of which is provided by at least one of sun gears, carriers and ring gears of two planetary gear sets. The first rotary module is selectively connected to the second intermediate transmitting path, while being selectively connected to the stationary member. The second rotary module is selectively connected to the first intermediate transmitting path, while being selectively connected to the stationary member. The third rotary module is connected to the output rotary member. The fourth rotary module is selectively connected to the first intermediate transmitting path, while being selectively connected to the second intermediate transmitting path.
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Abe Akiharu
Honda Atsushi
Hoshino Akira
Miyazaki Terufumi
Ota Hirofumi
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toyota Jidosha & Kabushiki Kaisha
Wright Dirk
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