Shock control arrangement in hydraulic control system

Details Shock control arrangement in hydraulic control system Shock control arrangement in hydraulic control system

1979-03-23

1981-06-23

Braun, Leslie

Machine element or mechanism

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

Preselected indexed position

74867, 74868, B60K 4106

Patent

active

042743087

ABSTRACT:
In an automatic power transmission having a transmission mechanism including fluid operated frictional units to be actuated to select automatic forward drive and reverse drive gear conditions and make a shift between the first and second gear ratios in the automatic forward drive range condition, a shock control arrangement is provided in the hydraulic control system for the transmission mechanism, comprising a pressure accumulator unit which takes up the fluid pressure to be applied to any of the frictional units during selection of the automatic forward drive range or reverse drive gear position or during upshifting between the first and second gear ratios in the automatic forward drive range, the level at which the pressure accumulator unit is to commence taking up of the fluid pressure for one of the frictional units being varied with engine load.

REFERENCES:
patent: 3495481 (1970-02-01), Ohie et al.
patent: 3623382 (1971-11-01), Chana
patent: 3656372 (1972-04-01), Chana
patent: 3688608 (1972-09-01), Leach
patent: 3710652 (1973-01-01), Miyazaki
patent: 3842693 (1974-10-01), Oberpichler
patent: 3908485 (1975-09-01), Miyauchi et al.
patent: 3951011 (1976-04-01), Lemon
patent: 3985063 (1976-10-01), Lemon
patent: 4090417 (1978-05-01), Burcz et al.
patent: 4111072 (1978-09-01), Harmon et al.
patent: 4125038 (1978-11-01), Hiramatsu

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