Friction wedge with mechanical bonding matrix augmented composition liner material
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United States of America Patent
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Dec 6, 2005
Grant Date -
Apr 28, 2005
app pub date -
Oct 23, 2003
filing date -
Oct 23, 2003
priority date (Note) -
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Abstract
A friction wedge assembly for use in a suspension system of railroad car trucks. The friction wedge assembly comprises a cast metal wedge having a bolster engaging surface, a truck side frame engaging surface and a surface disposed between the bolster engaging surface and the truck side frame engaging surface for engaging a spring that provides the load on the friction wedge assembly. There is a metal bonding matrix disposed on the truck side frame engaging surface of the wedge and a composition liner having a first side engageable with the metal bonding matrix and a radially opposed second side for engaging a metal wear liner on a side frame of such railroad car truck.
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