| 摘要 |
The anchor is designed for light and heavy fixing works in concrete and in brickwork. It consists of a bolt (1) around the threading of which a spreading open threaded bushing (4) is wound between which and head (2) of the bolt (1) a spreading open bushing (3) is mounted. External conical surface (5) is machined in one of the ends of bushing (3), its other end being split resting on the bolt head (2). 1 claim, 1 figure
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