Spring rail frog having switchable magnet for holding wing rail

Details Spring rail frog having switchable magnet for holding wing rail Spring rail frog having switchable magnet for holding wing rail

1997-12-01

1998-09-15

Morano, S. Joseph

Railway switches and signals

Vehicle-energy actuation

Continuous-rail frogs

246257, 246265, 246468, B61L 1100, E01B 714

Patent

active

058068104

ABSTRACT:
A railroad frog assembly is provided with a switched magnet that immediately retains a frog flexible wing rail in its open position in response to a railcar wheel passing through the frog assembly, and that delayably releases the frog flexible wing rail from its open position for subsequent closure by an included frog compression spring.

REFERENCES:
patent: 2036198 (1936-04-01), Cooper et al.
patent: 2395164 (1946-02-01), Cole
patent: 4624428 (1986-11-01), Frank
patent: 5417392 (1995-05-01), Wyatt
patent: 5544848 (1996-08-01), Kuhn et al.

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