Extruded foam reinforcement structures for innerspring...

A - Human Necessities – 47 – C

Patent

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Details

A47C 27/05 (2006.01) A47C 27/06 (2006.01)

Patent

CA 2411702

Extruded foam reinforcement pieces (12) are described for assembly in connection with innerspring assemblies (20) and mattresses. The pieces (12) have optimized cross-sectional configurations which can be consistently extruded in continuous strands which are then cut to length according to the type and size of innerspring assembly (20). The pieces (12) are configured to engage various components of the innerspring (20), including spring coils (22), spaces between coil springs (22), and framing borderwires (24, 26). The foam reinforcement pieces (12) facilitate attachment and alignment of overlying material such as padding (30) and upholstery (32) and function to improve the support characteristics of an innerspring (20). Various embodiments of extruded foam reinforcement pieces (12) include a support element (40) configured to attach about the exterior of a single coil at a corner of an innerspring; a relatively short span side wall support (50) which engages vertically between coils adjacent a vertical side wall of the innerspring; and a tapered edge structure (60) configured to fit over side edges of an innerspring (20), with padding (30) and upholstery (32) attachable over each of the various foam reinforcement structures to improve the form and strength of an innerspring assembly (12).

Cette invention concerne des éléments de renfort en mousse extrudée (12) qui s'utilisent avec des de ressorts (20) et des matelas à ressorts. Les éléments (12), qui se présentent en coupe dans des configurations optimisées, peuvent être extrudés de manière uniforme en cordons continus que l'on découpe ensuite à la longueur requise par le type et la taille de l'ensemble ressort (20). Les éléments (12) sont étudiés pour s'adapter à divers composants de l'ensemble ressort (20), tels que ressorts à boudin (22), espaces entre ressorts à boudin (22) et fils métalliques de rebord (24, 26). Les éléments de renfort en mousse (12) facilitent la fixation et l'alignement du matériau de couverture tel que le rembourrage (30) et la garniture (32) et contribuent par ailleurs à améliorer les caractéristiques de maintien de l'ensemble ressort (20). Divers modes de réalisation sont possibles pour les structures de renfort en mousse extrudé (12) : élément support (40) conçu pour se fixer sur l'extérieur d'un ressort à boudin unique, au niveau du coin de l'ensemble ressort de matelas ; support de paroi latérale de largeur relativement réduite qui s'engage verticalement entre des ressorts situés contre une paroi latérale verticale de l'ensemble ressort ; et structure à bords biseautés (60) (60) conçue pour s'adapter sur les bords latéraux d'un ensemble ressort (20), le rembourrage (30) et la garniture (32) pouvant se fixer sur chacune des diverses structures de renfort en mousse pour améliorer la forme et accroître la robustesse du matelas à ressorts (12).

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