Railway switches and signals – Crossings – frogs – and mates – Frogs
Patent
1996-04-18
1997-08-05
Le, Mark T.
Railway switches and signals
Crossings, frogs, and mates
Frogs
E01B 700
Patent
active
056534086
ABSTRACT:
A direct support type of rigid railbound railroad trackwork frog assembly is provided with a core frog casting, a pair of compliant, non-metallic spacer elements contacting laterally opposed sides of the core frog casting, a pair of wing rails respectively contacting the compliant, non-metallic spacer elements, and a threaded bolt and nut fastener joining the casting, spacer elements, and wing rails into a rigid unitary structure.
REFERENCES:
patent: 2739772 (1956-03-01), Budin
patent: 5496004 (1996-03-01), Kuhn
patent: 5522570 (1996-06-01), Benenowski et al.
Kuhn Stephen R.
Lancaster Ronald Lee
Rittenhouse Ted A.
Schultz Kenneth L.
Young Keith
ABC Rail Products Corporation
Baker Jr. Thomas S.
Le Mark T.
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