Patent ID: 6286791
Filing Date: 2001-09-11
Classification: B61L,E01B

Abstract:
In a railroad trackwork spring wing rail frog assembly having a relatively fixed wing rail and a laterally movable spring wing rail, in combination:a base plate element;a spring wing rail element supported by, and laterally movable with respect to, said base plate element;a selectively releasable hold-open element pivotally connected to said spring wing rail element and to said base plate element;a shock absorber element secured to said base plate element and to said spring wing rail element; anda heavy-duty spiral compression spring rail-closer element mounted coaxially and in surrounding relation to said shock absorber element, and functioning cumulatively with respect to said shock absorber element,said shock absorber element generating an opposing force in connection with opening movement of said spring wing rail element and not generating an assisting force in connection with closing movement of said spring wing rail element, and said heavy-duty compression spring rail-closer element generating an opposing force in connection with opening movement of said spring wing rail element and an assisting force in connection with closing movement of said spring wing rail element.