Light weight fatigue resistant railcar truck bolster

Railway rolling stock – Trucks – Bolster

Patent

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B61F 504

Patent

active

051117533

ABSTRACT:
A light weight fatigue resistant cast steel bolster for a freight railcar truck without any opening in the bolster bottom wall having internal risers connected to the bottom wall at bend points and with a ratio of metal in the top and bottom walls that lessens the distance of the neutral axis above the bolster bottom wall as compared to comparable prior art bolsters.

REFERENCES:
patent: 2552019 (1951-05-01), Stertzbach
patent: 4114540 (1978-09-01), Strugielski et al.
patent: 4196672 (1980-04-01), Bullock
patent: 4322981 (1982-04-01), Radwill
patent: 4342266 (1982-08-01), Cooley
patent: 4370933 (1983-02-01), Mulcahy
patent: 4753174 (1988-06-01), Berg et al.
patent: 4838174 (1989-06-01), Moehling
Car and Locomotive Cyclopedia, Simmons-Boardman Publishing Corp., 1974, pp. S13-54 and S13-55.
ASF User's Guide-Freight Car Truck Design, American Steel Foundries sales publication (at p. 3).

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