Railway vehicle brake system with four-way valve

Fluid-pressure and analogous brake systems – Flow retarder – Isolation valve

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Details

251174, 303 86, 13762547, B60T 1704

Patent

active

044286228

ABSTRACT:
A railroad vehicle brake system in which a four-way valve is used to control air flow in brake pipe sections and to the control valve which controls the air supplied to a brake cylinder. The four-way valve includes a housing and a rotatable operating member in the form of a truncated bolt with air channels therein which member can be rotated so as to selectively interconnect or cut-off the brake pipe sections and the control valve. The member has operating shafts integral with the bolt which extend from opposite sides of the housing. Multi-part seals are disposed in openings in the housing to which the brake pipe sections and the control valve are connected and have portions urged into contact with the bolt.

REFERENCES:
patent: 2698731 (1955-01-01), Koehler et al.
patent: 3037738 (1962-06-01), Jackson et al.
patent: 3132837 (1964-05-01), Britton
patent: 3154094 (1964-10-01), Bredtschneider et al.
patent: 3272473 (1966-09-01), Veit et al.
patent: 3827671 (1974-08-01), Bolden et al.
patent: 4153305 (1979-05-01), Kennedy et al.
patent: 4232709 (1980-11-01), Zoric
patent: 4262691 (1981-04-01), Kacal

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