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(11) | EP 0 856 271 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Base for chairs, armchairs or the like |
| (57) A base for chairs, armchairs or the like, comprising tubular or open-profile metal
spokes (15) which are radially joined, at their ends (16), to a likewise metallic
central structure (17) on which a post for a seat is fitted. The central structure
(17) comprises at least two flat portions (18) which are perimetrically provided with
a folded rim (20), between which the ends (16) of the spokes (15) are interposed.
The flat portions are welded to the spokes by electric pressure welding which produces
the melting and at least partial penetration of the folded rims in the softened ends
of the metal spoke and the folded rims are thicker than the metal spokes. |