Tractor-trailer parking dash control valve with two-way check va

Details Tractor-trailer parking dash control valve with two-way check va Tractor-trailer parking dash control valve with two-way check va

1976-08-18

1978-02-28

Blix, Trygve M.

Fluid-pressure and analogous brake systems

Motorman's valves

13762527, 303 71, 303 84A, B60T 1338

Patent

active

040763285

ABSTRACT:
A tractor-trailer parking control valve includes a spring-biased valve member movable within a chamber to control communication between a spring brake chamber port and an exhaust port and the spring brake chamber port and a source of fluid pressure. In a second chamber within the control valve housing is a two-way check valve which controls the supply of pressure from one of two reservoirs to the chamber of the spring-biased valve member.

REFERENCES:
patent: 2463325 (1949-03-01), Slomer
patent: 3109456 (1963-11-01), Horowitz et al.
patent: 3456988 (1969-07-01), Gibbons et al.
patent: 3511260 (1970-05-01), Benjamin
patent: 3790222 (1974-02-01), Fannin
patent: 3841714 (1974-10-01), Schultz

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