Anchor bolt for use with heavy loads has sleeve fitted over its shaft, shaft having conical end and sleeve having spreadable tongues, sum of radial gaps between which is more than third of circumference of sleeve

摘要

The anchor bolt (1) for use with heavy loads has a sleeve (3) fitted over its shaft. The shaft has a conical end (5) and the sleeve has spreadable tongues (4). The sum of the radial gaps between these is more than a third of the circumference of the sleeve.