Fatigue-resistant emergency release device for rail transit vehicle coupler
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United States of America Patent
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Aug 3, 2010
Grant Date -
Jun 12, 2008
app pub date -
Dec 8, 2006
filing date -
Dec 8, 2006
priority date (Note) -
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Abstract
A release device for a draft gear assembly comprises a draft gear housing for slidably supporting a yoke shaft and capturing a cushion unit associated with the yoke shaft between buff and draft stops. The buff stop comprises a release ring within the interior of the draft gear housing being radially divided into two or more sections. A plurality of release bolts designed to shear under emergency buffing forces extend through the draft gear housing and into the sections of the release ring to draw the sections radially outward to the interior surface of the draft gear housing eliminating gaps and minimizing flexing of the release bolts.
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