Fluid-pressure and analogous brake systems – Multiple control – Fluid and electric
Reexamination Certificate
2005-11-15
2005-11-15
Siconolr, Robert A. (Department: 3683)
Fluid-pressure and analogous brake systems
Multiple control
Fluid and electric
C303S003000, C303SDIG010, C303SDIG011
Reexamination Certificate
active
06964457
ABSTRACT:
Method and apparatus for controlling braking on a train having ECP railcars using a conventional automatic brake valve. The locomotive and railcars are connected to brake pipe and a wireline, or use RF communications. A brake handle or other brake control valve interface is operated to cause a pressure change in an equalizing reservoir. The relay valve is isolated from the pressure change and connected to a reference pressure whereby brake pipe pressure is maintained. The pressure change is sensed and a signal generated representative thereof which is used to determine the level of braking commanded on the railcars. The apparatus includes an interface unit interposed between pertinent ports connecting the automatic brake valve, equalizing reservoir and brake pipe, and an equalizing reservoir pressure sensor to provide an output signal to an ECP controller for controlling braking on the railcars.
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Buchanan & Ingersoll PC
Siconolr Robert A.
Sy Mariano
Westinghouse Air Brake Technologies Corporation
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