Automatic power transmission with direct-drive clutch

Details Automatic power transmission with direct-drive clutch Automatic power transmission with direct-drive clutch

1977-02-18

1979-07-10

Staab, Lawrence J.

Machine element or mechanism

Gearing

With fluid drive

74733, F16H 4700

Patent

active

041603923

ABSTRACT:
In an automatic power transmission including hydrodynamic torque transmitting means such as a torque converter or a fluid coupling and fluid-operated direct-drive clutch means combined with the torque converter or fluid coupling, control valve means is provided so that the direct-drive condition is achieved from the top-gear condition at a retarded timing after the top gear has been attained under low-load conditions of the engine although direct-drive condition is established simultaneously when an upshift is made to the top gear under high-load operating conditions of the engine.

REFERENCES:
patent: 3805640 (1974-04-01), Schneider et al.
patent: 3857302 (1974-12-01), Morris
patent: 3964347 (1976-06-01), Ahlen

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