Frog for switches
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United States of America Patent
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May 20, 1986
Issued Date -
N/A
app pub date -
Jan 9, 1985
filing date -
Jun 6, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to an improvement in a frog for switches, in particular for rapid transit switches, with a junction rail mounted in a rotatable manner and adapted to close a gap between pairs of rails of straight or branch track, the improvement comprising that the two ends of the junction rail have the shape of an isosceles triangle and the corresponding ends of a transit rail taper on one side, whereby a continuous rail-head profile is formed when the junction rail abuts the transit rail.
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