Service and emergency trailer valve

Details Service and emergency trailer valve Service and emergency trailer valve

1976-04-15

1977-08-16

Halvosa, George E. A.

Fluid-pressure and analogous brake systems

Automatic

Supplementary control pipe

60406, 60416, 91 5, 137255, 1375121, 303 71, B60T 1548

Patent

active

040422810

ABSTRACT:
A valve for use in applying brake releasing pressure to brake chambers in a vehicle air brake system having reservoirs each containing air for either service or emergency use and having air pressure supply lines. The valve includes a housing. A chamber is formed in the housing. A port permits air communication between the valve and a supply line. A passage interconnects the port and the chamber. Reservoir ports interconnect through the passage. A first plurality of one-way check valves in the passage permit air to pass therethrough from the port to the reservoir ports. A second plurality of one-way check valves in the passage permit air to pass therethrough from the reservoir ports to the chamber.

REFERENCES:
patent: 2278181 (1942-03-01), Lieberherr
patent: 2897012 (1959-07-01), Vorech
patent: 3059975 (1962-10-01), Morse
patent: 3690733 (1972-09-01), Gachot et al.
patent: 3862782 (1975-01-01), Horowitz et al.

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