Power transmission mechanism with a hydrokinetic torque converte

Details Power transmission mechanism with a hydrokinetic torque converte Power transmission mechanism with a hydrokinetic torque converte

1981-11-09

1984-09-04

Herrmann, Allan D.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74730, 74752C, B60K 4112, F16H 4700, F16H 374

Patent

active

044689896

ABSTRACT:
A control valve system for an automatic power transmission mechanism having planetary gearing defining plural torque delivery paths comprising fluid pressure servo operated brakes and clutches and a vehicle speed sensitive servo release shuttle valve which cooperates with the timing valve circuit to establish a first timed relationship between the application and release of the servos during a ratio change from the high ratio to an intermediate underdrive ratio at a relatively high speed and for establishing a different timing relationship between those circuit elements during a corresponding ratio change at a lower vehicle speed, the rate of application of the underdrive ratio servo during a ratio change from the lowest ratio to an intermediate underdrive ratio being calibrated independently of the calibration required for a ratio change from the high speed ratio to the same intermediate underdrive ratio.

REFERENCES:
patent: 2987942 (1961-06-01), Jania
patent: 3022676 (1962-02-01), Duffy
patent: 3295387 (1967-01-01), Leonard et al.
patent: 3400612 (1968-09-01), Pierce, Jr.
patent: 3683721 (1972-08-01), Uozumi et al.
patent: 3706240 (1972-12-01), Borneman et al.
patent: 3714836 (1973-02-01), Pierce, Jr. et al.
patent: 4106369 (1978-08-01), Taga
patent: 4226309 (1980-10-01), Siliberschlag
patent: 4346626 (1982-08-01), Kawamoto

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