Two-speed planetary gearset having locking plantetary pinions

Planetary gear transmission systems or components – Reversal of direction of power flow changes power...

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475331, 475324, 475346, F16H 5708

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active

057002185

ABSTRACT:
The kinematic arrangement of a multiple-speed automatic transmission for an automotive vehicle includes three simple planetary units, hydraulically actuated clutches and brakes applied and released selectively, and several overrunning couplings that produce one-way drive connection between the inner and outer races, which are connected to various components of the gear units. Each of the planetary gear units includes a sun gear, a ring gear surrounding the sun gear, a carrier, and a set of planet pinions in continuous meshing engagement with the sun gear and ring gear and rotatably supported on the carrier. At least one of the gear units includes an overrunning clutch that produces a one-way drive connection between its carrier and one of the planet pinions supported on the carrier.

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