Friction wedge design optimized for high warp friction moment and low damping force
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United States of America Patent
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-
Feb 10, 2004
Grant Date -
Dec 27, 2001
app pub date -
Jan 29, 2001
filing date -
May 6, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A damping system for a rail car truck utilizes friction wedges supported on side springs to damp relative movement between the rail car truck bolster and the side frames supporting it. Each friction wedge has a generally triangular shape with an angle .theta. defined between a vertical friction surface which bears against a side frame and a sloping friction surface which moves relative to the bolster. The angle .theta. and the force P of each side spring are defined by ##EQU1##
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