Flared railway frog

Details Flared railway frog Flared railway frog

2007-08-28

2007-08-28

Le, Mark T. (Department: 3617)

Railway switches and signals

Crossings, frogs, and mates

Details

C246S468000

Reexamination Certificate

active

10966699

ABSTRACT:
An improved railway frog having opposite side flangeways, each flangeway comprising a channel with an ending width greater than a corresponding channel width of a conventional frog. The improved frog channel further comprising a first segment and a second segment. The second segment having an outside wall angled greater than a corresponding first segment outside wall in relation to an inner wall of the channel.

REFERENCES:
patent: 1391226 (1921-09-01), Weaver
patent: 1402098 (1922-01-01), Shaw
patent: 2377273 (1945-05-01), Siebert
patent: 3764802 (1973-10-01), Webster

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