Fluid-pressure and analogous brake systems – Motorman's valves – Multiple motors
Patent
1974-08-21
1976-03-02
Blix, Trygve M.
Fluid-pressure and analogous brake systems
Motorman's valves
Multiple motors
303 6R, 303 68, B60T 1506
Patent
active
039414329
ABSTRACT:
A change-over valve including a housing and a slide sealingly guided therein is provided for use with a two-line trailer brake system having two brake circuits. The slide is retained in a normal position, at which supply tubes leading to compressed air supply tanks for the brake circuits are closed, by a piston loaded with compressed air from a supply tube, but is manually movable to a maneuvering position, at which the brakes of the system are released. The slide is provided with two channels and two associated check valves arranged so that when the slide is in the normal position it closes the supply tubes leading to the compressed air supply tanks for the brake circuits and so that when the slide is in the maneuvering position it connects those supply tubes via its channels and the associated check valves to a common space, which is connected to one or more emergency brake chambers for emergency brake pistons of the trailer brake system.
REFERENCES:
patent: 3228730 (1966-01-01), Schubert
patent: 3304131 (1967-02-01), Bueler
patent: 3695731 (1972-10-01), England et al.
patent: 3718372 (1973-02-01), Gruner et al.
patent: 3820854 (1974-06-01), Stearns
Blix Trygve M.
Butler Douglas C.
Graubremse GmbH
Griffin Ronald I.
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