| 摘要 |
A blind screw anchor, made of one piece of metal, has a shank, constituted by sleeve portions connected together by uniformly spaced links. A head flange is integrally connected to an adjacent sleeve portion at one end of the shank by a bridge piece bent at right angles to bring the head flange against the shank at that end. A tail cap piece is similarly connected to the sleeve portion at the other end of the shank and bent into abutting engagement therewith. The anchor, made of one piece of sheet metal, is economical to manufacture in a multistage strip forming press. It is especially useful for securing articles to hollow partition walls. |
