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1. (WO2010121928) PROCESS FOR FORMING A CONNECTING STRUCTURE BETWEEN THE COLUMN AND SEATING PORTION OF AN OFFICE CHAIR, AND A STRUCTURE OBTAINED BY SAID PROCESS

Pub. No.:    WO/2010/121928    International Application No.:    PCT/EP2010/054851
Publication Date: Fri Oct 29 01:59:59 CEST 2010 International Filing Date: Thu Apr 15 01:59:59 CEST 2010
IPC: A47C 1/032
Applicants: IMARC S.P.A.
ZANCHETTA, Andrea, Francesco
Inventors: ZANCHETTA, Andrea, Francesco
Title: PROCESS FOR FORMING A CONNECTING STRUCTURE BETWEEN THE COLUMN AND SEATING PORTION OF AN OFFICE CHAIR, AND A STRUCTURE OBTAINED BY SAID PROCESS
Abstract:
A method for forming connecting structures between the column and seating portion for office chairs, characterised by: - forming a frusto-conical portion (8) provided with a flange (24, 26, 28) by cold-pressing a portion of sheet metal, - inserting said flanged portion into a mould (32) reproducing the shape of the structure, - injecting plastic material into the mould in such a manner as to incorporate the flanged portion (24, 26, 28) of said frusto-conical portion (8) into the plastic material.