B - Operations – Transporting – 61 – H
Patent
B - Operations, Transporting
61
H
188/28
B61H 13/24 (2006.01) B60T 17/08 (2006.01) B61H 1/00 (2006.01) B61H 13/38 (2006.01) B61H 15/00 (2006.01) F16D 65/56 (2006.01)
Patent
CA 1260851
RAIL CAR BRAKE APPARATUS 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 transmission 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.
516499
Borden Ladner Gervais Llp
General Signal Corporation
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