Railway rolling stock – Trucks – Bogie
Patent
1979-07-27
1980-12-30
Beltran, Howard
Railway rolling stock
Trucks
Bogie
105189, 308137, 339 5P, 339 8R, B61F 516, B61F 550, F16C 1704, H01R 3946
Patent
active
042416671
ABSTRACT:
A grounding arrangement for railroad car center plate assembly bowl liners of the all polymeric type in which the liner is equipped with a grounding device formed from a strip of beryllium copper to define a generally U shaped contact spring having a lower attachment grounding leg or leaf that is anchored at one end to the liner floor underside, adjacent to but spaced from the liner central center pin receiving aperture, and that is to be in flush engagement with the bolster bowl floor; the other end of the attachment leg is integral with a bight portion located in the liner aperture in two point abutting relation to the liner rim defining same, on a chord of the aperture, which bight portion is integral with a follower contact grounding leaf or leg that overlies the upper surfacing of the bowl liner floor and is contained within but is free of securement to the bowl liner, with the follower contact grounding leaf being spring biased away from the liner floor to maintain engagement with the body bolster center plate undersurfacing both when the body bolster center plate is in normal operating position within the bolster bowl, and when car body roll is occasioned that will tilt the car body bolster center plate relative to the truck bolster bowl.
REFERENCES:
patent: 2341360 (1944-02-01), Bulgin
patent: 3037150 (1962-05-01), Schriner et al.
patent: 3466102 (1969-09-01), Goodwyn
patent: 3797862 (1974-03-01), Letterman
patent: 3873886 (1975-03-01), Kato et al.
patent: 3944298 (1976-03-01), Cannon
patent: 4075951 (1978-02-01), Chierici et al.
Beltran Howard
Holland Company
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