Chair shell with integral hollow contoured support

A - Human Necessities – 47 – C

Patent

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Details

A47C 5/12 (2006.01) A47C 3/04 (2006.01) A47C 3/12 (2006.01) A47C 7/16 (2006.01)

Patent

CA 2643652

A molded chair shell includes a seat portion and a back portion joined at a junction area. A support or reinforcement member is located at the junction area and is formed integrally with the seat portion and the back portion. The reinforcement member includes an internal cavity between the seat portion and the back portion that is substantially positioned over the junction area. The cavity is formed by cavity walls, which may form ribs that extend forwardly along the seat portion and upwardly the back portion of the chair shell. The chair shell may be formed in an injection molding process, and the internal cavity may be formed in a gas assist operation carried out during the injection molding process.

Une enveloppe de fauteuil comprend une partie siège et une partie dossier jointes à une aire de jonction. Un soutien ou un élément de renforcement est localisé à l'aire de jonction et est formé intégralement avec la partie siège et la partie dossier. L'élément de renforcement inclut une cavité interne, entre la partie siège et la partie dossier, qui est essentiellement positionnée sur l'aire de jonction. La cavité est formée par les parois de celle-ci qui peuvent former des rainures qui se prolongent vers l'avant le long de la partie siège et vers le haut de la partie dossier de l'enveloppe du fauteuil. L'enveloppe du fauteuil peut être formée par un procédé de moulage par injection, et la cavité interne peut être formée dans une opération assistée par gaz exécutée pendant le procédé de moulage par injection.

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