Low noise railroad retarder brake shoe structure
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United States of America Patent
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-
Jul 19, 1983
Grant Date -
N/A
app pub date -
Jan 21, 1981
filing date -
Jan 21, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brake shoe structure includes a series of alternating long brake shoes and short brake shoes mountable on adjacent brake beams in a railroad car retarder. The length of the long brake shoe is such that the long brake shoe symmetrically straddles two adjacent brake beams. The length of the short brake shoe is such that the shoe occupies the spacing on the brake beams between two long brake shoes. The long brake shoes are affixable to each of the brake beams at at least two points. The brake shoes contain a plurality of slanting slots in their braking surfaces for interrupting harmonics producing screeching noises during retardation. The brake shoes may be formed of steel or heat treatable ductile iron.
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