| 摘要 |
An anchor for embedment into a concrete component, has a head via which load is applied to the anchor in use and an anchoring formation provided by at least one leg (2,32,34) extending from the head (4,30) and profiled along an edge thereof so as to lock into the surrounding concrete. The profile is formed by a series of longitudinally spaced formations each of generally saw-toothed shape with a leading edge of each formation inclining towards the head such that on application of a pulling load to the head the leg will lock tighter into the concrete with increasing load. In one form the anchor is a lifting anchor and having a pair of such legs (2,32,34) extending from the head (4,30) which is adapted for releasable engagement with lifting equipment, and the profile is formed along an inner edge of each of the legs (2,32,34). In an alternative form the anchor is a plate anchor in which the head (4,30) of the anchor is formed by a plate and a set of such legs (2,32,34) extends from each of two opposite sides of the plate transversely to the plane of the plate. Each set of legs comprises at least two parallel legs (2,32,34) and the profile is formed along an inner edge of each of said legs.
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