| 摘要 |
<p>Three pyramidal or tapering legs, of triangular, elliptical or circular cross section, are coupled to each other, each leg sliding in the adjacent leg in a notch that conforms to the shape of the leg. The legs are blocked at a given level when sliding in the notches due to their tapering or pyramidal shape. This assembling device is self-locking and can be dismantled, and does not require any complementary insert. The assembly thus provides a rigid pyramidal support for various applications.</p> |
