A - Human Necessities – 47 – B
Patent
A - Human Necessities
47
B
A47B 96/02 (2006.01) B60R 11/00 (2006.01) B62D 29/04 (2006.01) F16S 3/00 (2006.01)
Patent
CA 2477529
A load bearing article (1) is described and includes a plurality of elongated shells (20) having a plurality of internal reinforcing ribs (50) fixedly attached within the hollow interior (35) of each shell (20), the shells (20) reside substantially within a common plane and are fixedly attached together by means of an external molded plastic structure (53). Each elongated shell (20) has a plurality perforations (e.g., perforations 38, 41, 44 and 45) having edges. A portion of the plastic material of the internal reinforcing ribs (50) and the external molded structure (53) extends through at least some of the perforations in each shell (20), and the edges of the perforations are embedded in the plastic material extending therethrough, thereby fixedly attaching the internal reinforcing ribs (50) within and the external molded structure (53) to each shell (20). The load bearing surtace (87) of the load bearing article (1) comprises (or is defined by at least) the external molded structure (53) (e.g., external molded structure (53) and at least one of, the elongated shells (20), and the plurality of internal reinforcing ribs (50)). The load bearing article is preferably formed by concurrently molding the plastic material of the plurality of internal reinforcing ribs (50) onto the interior surfaces (32), and the external molded structure (53) onto the exterior surfaces (29), of the elongated shells (20). Also described is a reversibly extendable load bearing structure (11) that includes at least two load bearing articles (1 and 1') connected together by means of a hinge (165).
La présente invention décrit un article de support de charge (1); l'articule comprend plusieurs coquilles allongées (20) munies d'une série de nervures renforcées (50) fixées dans l'intérieur creux (35) de chaque coquille (20), ces dernières étant maintenues essentiellement dans un plan commun et étant raccordées ensemble de manière fixe au moyen d'une structure de plastique moulé externe (53). Chaque coquille allongée (20) comporte de multiples perforations (p. ex. perforations 38, 41, 44 et 45) avec des rebords. Une partie du matériau en plastique des nervures de renfort (50) et de la structure moulée externe (53) se prolonge à travers au moins certaines des perforations de chaque coquille (20), et les rebords de perforations sont encastrés dans le matériau de plastique qui les traverse, ce qui fixe de façon permanente les nervures de renfort internes (50) dans la structure moulée externe (53) et vers chaque coquille (20). La surface de charge (87) de l'article de support de charge (1) comprend (ou est du moins définie par) la structure moulée externe (53) (p. ex., la structure moulée externe (52), et au moins une des coquilles allongées (20) et la série de nervures de renfort (50)). L'article de support de charge est, de préférence, formé en moulant simultanément le matériau de plastique de la série de nervures de renforts internes (50) sur les surfaces intérieures (32), et la surface moulée externe (53) sur les surfaces extérieures (29) des coquilles allongées (20). L'invention décrit également une structure de support de charge (11) pouvant être prolongée de façon réversible comprenant au moins deux articles de support de charge (1 et 1') reliés ensemble par une charnière (165).
Bayer Polymers Llc
Lanxess Corporation
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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