Magnetic rail brake device with asymmetric excitation coils and/or with multi-part coils
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United States of America Patent
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Oct 11, 2011
Grant Date -
Apr 29, 2010
app pub date -
Mar 20, 2008
filing date -
Mar 23, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A magnetic rail brake device includes a brake magnet with a solenoid former supporting a solenoid. A horseshoe-shaped magnet core is disposed adjacent to the solenoid former. The horseshoe-shaped magnet core includes a yoke having cheeks that project away from the yoke. Pole shoes are formed at ends of the cheeks. The solenoid includes an upper part, with an upper height and an upper width, and a lower part, with a lower height and a lower width. The solenoid is disposed between the cheeks and engages vertically around the yoke. The upper height is less than the lower height, and the upper width is greater than the lower width. The upper and lower heights are measured parallel to a vertical center axis of the brake magnet, and the upper and lower widths are measured transversely with respect to the vertical center axis.
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