Use of no-bake mold process to manufacture railroad couplers
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United States of America Patent
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Jul 14, 2015
Grant Date -
Feb 19, 2015
app pub date -
Jul 22, 2014
filing date -
Jan 11, 2010
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Abstract
A railroad coupler assembly having at least a body and a knuckle both formed in a no-bake manufacturing process, the body and the knuckle having dimensional tolerances of distances between features that wear during operation that are about half those obtained from a body and a knuckle manufactured by a green sand process, resulting in increased fatigue life compared to the body and the knuckle manufactured by a green sand process.
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