Planetary gear transmission systems or components – Fluid drive or control of planetary gearing – Impeller-turbine type fluid circuit in series with planetary...
Patent
1992-03-23
1992-10-20
Braun, Leslie A.
Planetary gear transmission systems or components
Fluid drive or control of planetary gearing
Impeller-turbine type fluid circuit in series with planetary...
475284, 475297, 475324, 192 4892, 192 484, F16H 5710
Patent
active
051565757
ABSTRACT:
A hydrokinetic planetary transmission mechanism having compound planetary gear elements that define multiple underdrive ratios, a direct drive ratio and an overdrive ratio as torque is delivered from the turbine of the hydrokinetic unit to a driven member wherein a friction clutch is used to establish a direct drive ratio as well as an overdrive ratio, separate overrunning couplings being used in cooperation with a friction clutch to establish torque delivery from a driven shaft to one element of the compound planetary gearing and a separate overrunning coupling being used in cooperation with a common clutch to establish a torque flow path between the driven shaft and another element of the compound planetary gearing during overdrive operation whereby ratio changes between the direct drive and the overdrive ratio on both upshifts and downshifts are smooth and fully nonsynchronous.
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Braun Leslie A.
Ford Motor Company
May Roger L.
McKenzie Frank G.
Trousdell William O.
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