Electrohydraulic speed-change device for a load-shiftable revers

Details Electrohydraulic speed-change device for a load-shiftable revers Electrohydraulic speed-change device for a load-shiftable revers

1978-01-05

1981-03-03

Bonck, Rodney H.

Machine element or mechanism

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

Preselected indexed position

74752A, 74866, F16H 556, F16H 558

Patent

active

042533465

ABSTRACT:
An electrohydraulic speed change system for a load-shiftable gear transmission of an automotive vehicle in which hydraulic devices such as clutches and brakes are operated by electromagnetic actuation of respective valves of the hydraulic system. The speed selection is effected by a series-connected array of switches and the circuit means provided for actuation of the electromagnetic valve includes time-delay networks operating an interrupter switch in series with this array.

REFERENCES:
patent: 3354744 (1967-11-01), Kuhnle et al.
patent: 3662625 (1972-05-01), Wakamatsu et al.
patent: 4026169 (1977-05-01), Kuhnle et al.
patent: 4041809 (1977-08-01), Dick et al.
patent: 4073204 (1978-02-01), Dick

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