Air brake wheel lock control valve mechanism

Details Air brake wheel lock control valve mechanism Air brake wheel lock control valve mechanism

1975-05-08

1976-03-02

Blix, Trygve M.

Fluid-pressure and analogous brake systems

Inertia control

1376275, 303 40, B60T 806, B60T 1512

Patent

active

039414280

ABSTRACT:
An air brake system having a brake application valve controlling a relay valve by pilot pressure. A wheel lock control portion includes a valve for venting a relay valve pilot chamber upon actuation of a solenoid valve during antiskid operation of the system. A supply pressure restrictor mechanism, held inactive during normal conditions, operates upon closure of the solenoid valve to restrict the supply of pressure from the pressure source to the relay valve supply port in order to permit a slower brake re-application rate upon skid control termination. The pressure restrictor mechanism is returned to its normally inoperative state upon release of the brake application valve.

REFERENCES:
patent: 3620577 (1971-11-01), Neisch et al.
patent: 3823987 (1974-07-01), Kurichh
patent: 3854501 (1974-12-01), Machek
patent: 3857614 (1974-12-01), Kurichh
patent: 3862782 (1975-01-01), Horowitz
patent: 3881779 (1975-05-01), Machek

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