Speed reducer control device for a vehicle having two independen

Details Speed reducer control device for a vehicle having two independen Speed reducer control device for a vehicle having two independen

1981-04-06

1984-01-10

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple systems

Fluid pressure and electric

303 6R, 303 96, 303 22R, B60T 802

Patent

active

044250061

ABSTRACT:
The energization of the electric speed reducer of a vehicle, whose friction brakes for the front wheels and rear wheels are respectively controlled by two independent pressurized fluid circuits, is controlled by a plurality of pressure contacts. These pressure contacts are actuated by the pressure of a fluid and this pressure is permanently given a value tied to the higher of the two pressures existing in the two independent pressurized fluid circuits. A dual control relay valve of the ++ type is connected to these two circuits and to an independent source of pressurized fluid.

REFERENCES:
patent: 3756661 (1973-09-01), Michellone
patent: 3956722 (1976-05-01), Lagarde
patent: 4164987 (1979-08-01), Lagarde
patent: 4260199 (1981-04-01), Reinecke
patent: 4352405 (1982-10-01), Marandet
WABCO WESTINGHOUSE, edition Dec. 1974, No. 973.002, "Valve de Commande de Remorque".
BENDIX, "Trailer Control Valve (Predominance Type)", Technical Pamphlet 9/015, Issue 1, 9/82.

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