| 摘要 |
A joint between two or more surfaces that is self aligned and secured in all directions is provided with a plurality of interlocking ridges and notches. Preferably, the joint may be adjustable in one direction by disengaging the ridges and notches, moving them laterally with respect to each other and thereafter reengaging them. The ridges and notches are parallel to each other on each side of a dividing line and angularly oriented with respect to the ridges on the other side of the dividing line. Adjustment laterally of the dividing line may be provided by recessing the mating surfaces within the vicinity of the dividing line.
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