Yieldable support prop and method
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United States of America Patent
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Sep 2, 2014
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N/A
app pub date -
Oct 26, 2011
filing date -
Oct 26, 2011
priority date (Note) -
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Abstract
A yield support prop for a mine includes a first metal tube extending from the mine floor having a first portion having a first outside diameter and a second portion having a second outside diameter. The prop includes a second metal tube that is disposed about the first portion and extends toward the mine roof, when the second tube receives a load from the mine roof, the second portion deforms the second tube and expands the second tube creating resistance against the load from the mine roof. A method for supporting a mine roof. A method for building a yieldable mine prop.
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