Patent ID: 6164602
Filing Date: 2000-12-26
Classification: B61L,E01B

Abstract:
A railroad trackwork frog assembly comprising:a frog fixed point element;a frog base plate element;a frog spring wing rail element that may be flexed laterally from a closed position abutting said frog fixed point element to an open condition separated from said frog fixed point element by a minimum distance equal to the width of a railcar wheel flange;a multiple stop position ratchet latch holdback subassembly coupled to said frog spring wing rail element and to said frog base plate element, and continuously retaining said frog spring wing rail element in a spring wing rail open condition when activated; andcontrol means selectively deactivating said multiple stop position ratchet latch holdback subassembly,said control means deactivating said multiple stop position ratchet latch holdback subassembly following the passing of the last railcar wheel of each train passing through the frog assembly to thereby initiate the spring return of said spring wing rail element from the open condition to a closed condition.