Hydraulic control apparatus and an automatic gear box for motor

Details Hydraulic control apparatus and an automatic gear box for motor Hydraulic control apparatus and an automatic gear box for motor

1985-03-12

1986-07-22

Leppink, James A.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

474 11, F16H 1104

Patent

active

046016813

ABSTRACT:
The present invention relates to an automatic gear box and a control therefor of a motor vehicle, including two pulleys connected by a transmission belt (driving belt), each of which is formed by a couple of disks, of which one is movable in regard to the other one, in order to vary the winding radius of the belt. The control for the automatic gear box includes an hydraulic circuit which incorporates a number of actuating cylinders, a couple of delaying valves and a valve for issuing a fluid gradually and under increasing pressure only if the inlet pressure is above a preestablished value.

REFERENCES:
patent: 3662621 (1972-05-01), Hirozawa
patent: 3893344 (1975-07-01), Dantlgraber et al.
patent: 3918312 (1975-11-01), Espenschied et al.
patent: 3954018 (1976-05-01), O'Berto
patent: 4095486 (1978-06-01), Ohnuma
patent: 4152947 (1979-05-01), Van Deursen et al.
patent: 4317389 (1982-03-01), Falzoni
patent: 4357806 (1982-11-01), Harris et al.

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