| 摘要 |
A scaffold coupling of the bayonet joint type in which internal ridges in the female member are formed by depressing material inwardly to form ridges of the desired shape. The portion of the male member extending into the female member is of substantially the same external diameter as the internal diameter of the female member so that the two members are held firmly together. The male member may either be secured to a base plate or within a tubular member of the same external diameter as the female member. The male member may be formed by machining or casting.
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