Hydraulic isolation valve for railway vehicle

Details Hydraulic isolation valve for railway vehicle Hydraulic isolation valve for railway vehicle

1991-05-29

1992-02-04

Cohan, Alan

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

303 71, 303 842, F60T 1718

Patent

active

050852434

ABSTRACT:
An isolation valve device for a hydraulic brake system of a railway vehicle including passageways via which hydraulic pressure communication is established between a pressure controller and the brake units of each truck of a railway vehicle, and diaphragm type flow control valves adapted to interrupt hydraulic pressure communication in a respective one of the passageways leading to the different truck brake units, when a pressure differential occurs therebetween, due to a ruptured brake line at one of the trucks, for example, causing a hydraulic fluid leak thereat.

REFERENCES:
patent: 2466441 (1949-04-01), Keller
patent: 2556616 (1971-01-01), Hensley
patent: 2930391 (1960-03-01), Bass
patent: 3441249 (1969-04-01), Aslan
patent: 3729014 (1973-03-01), Narumi
patent: 4860781 (1989-08-01), Fairman

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