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(11) | EP 0 729 903 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Modular unit |
(57) Modular unit (A) characterized by a substantally circular base, and a shape obtained
by the combination of a substantially cylindrical body and a substantially frustum
body, cohaxial one to the other, the latter being placed on a base of the cylindrical
body, the external surface of said modular unit being characterized by the presence
of notches (5), (7) and projections (4), (6), (6'), symmetrically and alternately
placed so that at least one of said projections of a first element be housed in a
corresponding notch of a second unit and the two units mortise one another. |