Spring rail frog

Details Spring rail frog Spring rail frog

1998-07-21

2000-10-31

Le, Mark T.

Railway switches and signals

Vehicle-energy actuation

Continuous-rail frogs

246468, E01B 700

Patent

active

061389587

ABSTRACT:
A spring rail frog includes a movable wing rail, a fixed wing rail and a nose rail. The movable wing rail is provided with a bendable portion and a non-bendable portion. The bendable portion can include any or all of a reduced width base portion, a reduced width head portion and an increased width web portion. The height of the movable wing rail can also be smaller in height than the height of the nose rail. A fixing plate can also be provided between a base plate and the movable wing rail to adjust the relative height of the movable wing rail and the nose rail. The movable wing rail extends beyond a spacer block disposed between the movable wing rail and the fixed wing rail. The movable wing rail extends away from the nose rail a predetermined distance for connection to the lead rail.

REFERENCES:
patent: 2174367 (1939-09-01), Hoffman
patent: 4624428 (1986-11-01), Frank
patent: 5544848 (1996-08-01), Kuhn et al.
patent: 5782437 (1998-07-01), Irie et al.
patent: 5810298 (1998-09-01), Young et al.

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