Railway truck damping assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 10, 1990
Issued Date -
N/A
app pub date -
Dec 23, 1988
filing date -
Jun 29, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A railway truck assembly provides sprung support of a car body with respect to the truck wheels by means of compression springs interposed between axle carried supports such as truck side frames and a car body support such as a bolster, wherein biased friction assemblies provide fit-up and friction damping of relative motion between the axle carried supports and the car body support, the friction assemblies including rigid metallic friction members and elastomeric elements received in a pocket formed by spaced surfaces which engage the respective members with the elastomeric elements in biased engagement with a pocket surface and having an elastic characteristic to provide an elastomeric response for non-rigid compliance and cushioning of low level car body support force variation through elastic deformation thereof, and damping of larger level car body support force variation through bodily sliding of the friction wedges on frictionally engaged surfaces in repeatable cycles of elastomeric cushioning, friction break, and bodily sliding.
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