ROCK BOLT AND ROCK BOLT SHANK
A rock bolt which includes an elongate threaded shank with at least one passage which extends longitudinally through the shank, a plurality of air leakage paths which extend between an outer surface of the shank and the passage, and an expansible mechanical anchor which is engaged with one end of th...
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| Format: | Patent |
| Sprache: | eng ; fre |
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| Zusammenfassung: | A rock bolt which includes an elongate threaded shank with at least one passage which extends longitudinally through the shank, a plurality of air leakage paths which extend between an outer surface of the shank and the passage, and an expansible mechanical anchor which is engaged with one end of the shank.
L'invention concerne un boulon comprenant une tige filetée allongée pourvue d'au moins un passage qui s'étend longitudinalement à travers la tige, une pluralité de voies de fuite d'air s'étendant entre une surface externe de la tige et le passage, et un ancrage mécanique expansible rentrant en contact avec une extrémité de la tige. |
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