Brake release for railroad cars

Fluid-pressure and analogous brake systems – Releasing

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Details

308 70, 308 86, B60T 1502

Patent

active

057227373

ABSTRACT:
A brake release for railroad cars allows all the brakes of a train to be released automatically instead of by the conventional, car by car method. The crewmember releasing the brakes does so by merely adjusting the air pressure in the train's air brake line to a predetermined level. The brake release system's valves open at this pressure allowing the system to be pressurized. This pressure provides the force needed to release the brakes when the pressure in the train's air brake line is released. The system then resets itself and is ready for its next use. This system can be installed on a rail car without interfering with the conventional method of releasing the brakes.

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patent: 3823986 (1974-07-01), Pollinger et al.
patent: 4346790 (1982-08-01), Morrison et al.
patent: 4452345 (1984-06-01), Mathieu
patent: 4553723 (1985-11-01), Nichols et al.
patent: 4971179 (1990-11-01), Han

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