| 摘要 |
<p>Anchor Bolt Systems and Methods of Installing Anchor Bolts An anchor bolt system comprises a threaded rod (12) to be installed in a hole provided in a substrate(60) and a rod driver (14) to be gripped by a rotary driving(64) device to transfer rotational movement from the rotary driving device to the threaded rod. The bolt or screw(12) has a leading end (26), a trailing end (28), external threading (24) and a drive receiving formation or screw head(38) disposed at the trailing end. The drill bit or chuck (14) is configured to engage the drive receiving, screw head(46) to transfer the rotary movement to the threaded rod(12).</p> |
