Rail car brake apparatus

Details Rail car brake apparatus Rail car brake apparatus

1987-01-21

1988-08-30

Halvosa, George E. A.

Brakes

Vehicle

Railway

188206R, 403157, 403161, B61H 1334

Patent

active

047669802

ABSTRACT:
A parallel beam brake apparatus for dual and triple axle trucks and a single beam brake apparatus for single axle trucks each comprise spaced, pivotably mounted bell crank levers which engage a fluid operable actuator between one pair of arms and engage a pair of push rods with the remaining arms. Improved spherical joints between the arms and the push rods facilitate force tranmsmission without allowing push rod rotation. A unique pivot geometry between the bell crank levers and the brake beams facilitates assembly and improves stress distribution between the levers and the beams. The actuator includes a slack adjustor mechanism in which a spiral power spring unwinds to drive a lead screw and take up slack or is wound by the rotating, translating lead screw to add slack.

REFERENCES:
patent: 179794 (1876-07-01), Hyde
patent: 2013048 (1935-09-01), Hankins
patent: 2409908 (1946-10-01), Simpkins
patent: 2917134 (1959-12-01), Buvelot
patent: 3152846 (1964-10-01), Dumpis
patent: 3198086 (1965-08-01), Rager et al.
patent: 3592299 (1971-07-01), Erdmann
patent: 3595348 (1971-07-01), Kyllonen
patent: 3675944 (1972-07-01), Kobayashi
patent: 4385548 (1983-05-01), Persson et al.
patent: 4389135 (1983-06-01), Peters

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