A - Human Necessities – 47 – C
Patent
A - Human Necessities
47
C
A47C 7/46 (2006.01) A47C 1/024 (2006.01) A47C 5/12 (2006.01)
Patent
CA 2663687
A back construction for a seating unit has a back frame, a compliant back including a back shell formed from a resiliently flexible polymeric sheet having a flexible forwardly- protruding lumbar support section that can be flexed to a plurality of different shapes. A force-generating mechanism is operably attached to at least one of the compliant back and the back frame. The force-generating mechanism is constructed to provide a biasing force that biases the lumbar support section forward to provide support for a seated user's back. The force-generating mechanism characteristically provides the biasing force without forcing a shape change in the compliant back.
Un dossier pour unité de siège comprend les éléments qui suivent : une ossature de dossier; un dossier souple qui comprend une enveloppe arrière constituée d'une feuille polymérique élastique présentant une section souple de soutien lombaire dépassant en avant, infléchissable pour prendre diverses formes. Un mécanisme producteur de force est fixé fonctionnellement au moins à un dossier compliant et à une ossature de dossier. Ce mécanisme fournit une force de sollicitation qui décale la section de soutien lombaire en avant pour soutenir le dos d'un utilisateur assis. Le mécanisme producteur de force fournit de façon caractéristique la force de sollicitation, sans forcer le dos compliant à changer de forme.
Battey Robert J.
Dammermann Arnold B.
Dekraker Larry
Ekdahl Kevin A.
Heidmann Kurt R.
Borden Ladner Gervais Llp
Steelcase Inc.
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