Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Impeller-turbine type fluid circuit in series with planetary...
Patent
1987-12-01
1990-04-10
Bonck, Rodney H.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Impeller-turbine type fluid circuit in series with planetary...
475205, 475206, 475281, F16H 3708, F16H 3700
Patent
active
049149784
ABSTRACT:
An automatic transmission has a main transmission mechanism having two planetary gear units made on a first axle, and a sub transmission mechanism having two planetary gear units made on a second axle; the main transmission mechanism having a single planetary gear unit and dual planetary gear unit, carriers of the gear units being connected to one another and sun gears of the gear units being connected one another, an input member connecting a ring gear of the single planetary gear unit through a first clutch, and connecting a sun gear through a second clutch, a brake restraining the sun gear and a ring gear of the dual planetary gear unit at a required moment; the main transmission mechanism having three forward speeds and one reverse speed. A fourth clutch may be added which connects an input shaft and the ring gear of the dual planetary gear unit, so that four forward speeds and one reverse speed are obtained. The sub transmission mechanism has three forward speeds.
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Ando Masahiko
Miura Masakatsu
Moroto Shuzo
Aisin-Warner Kabushiki Kaisha
Bonck Rodney H.
Macris Harold F.
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