DOUBLE-WEDGE ROCK BOLT
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United States of America Patent
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Issued Date -
Aug 29, 2024
app pub date -
Aug 1, 2022
filing date -
Aug 5, 2021
priority date (Note) -
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Abstract
A rock bolt includes a wedge-based expansion mechanism. The expansion mechanism includes a drive wedge arranged to expand an intermediate wedge upon tensioning of the rock bolt, wherein the intermediate wedge is arranged to expand a wedge device attached to an outer tube of the rock bolt. The use of the intermediate wedge enables greater expansion of the rock bolt.
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