| 摘要 |
<p>Anchoring rod (1) is intended for embedding in a concrete mass, and comprises a part with flattened ends (2), with at each end at least one projection. The projection is always fitted to the free part of the flattened end, and has the shape of a pyramid (3). A mould is used to produce the rod, and has keepers for holding and rolling out the thread fed through it. The mould is divided so that by relative movement of its parts crossways to the thread direction of feed, a division can be obtd. between successive thread parts. Shaped parts in the mould form the projections, and comprise a recess with the shape of the sections of the mould.</p> |
