Fluid-pressure and analogous brake systems – Releasing – Motor
Patent
1988-06-23
1989-08-08
Reger, Duane A.
Fluid-pressure and analogous brake systems
Releasing
Motor
303 81, B60T 1552
Patent
active
048546488
ABSTRACT:
An automatic air braking system for a railway train having a flow detector for sensing the flow of pressurized air in the brake line during a brake release command time. A pilot chamber located in a relay valve which is pressurized when a signal from the flow detector exceeds a first predetermined pressure value and which stops the pressurization when the flow signal drops below a second predetermined pressure value. The brake line runs from the lead unit or locomotive of the train and through the railway vehicle or freight cars connected to and pulled by the lead unit or locomotive. The relay valve which is an automatic-lapping-type is located in the lead unit or locomotive in which the pilot chamber is exhausted in response to the reception of a brake release command. An output chamber, which is located in the relay valve, is connected to the brake line of the lead unit or locomotive. The output chamber is pressurized in response to pressurization of the pilot chamber and is exhausted in response to exhaustion of the pilot chamber, so as to accelerate the brake release operation along the length of the train.
REFERENCES:
patent: 3966269 (1976-06-01), McEathron
patent: 4145090 (1979-03-01), Hart
patent: 4449759 (1984-05-01), Eder
patent: 4679863 (1987-07-01), Ikeda et al.
Nippon Air Brake Co., Ltd.
Reger Duane A.
Sotak J. B.
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