High-strength, lightweight blow-molded plastic structures

A - Human Necessities – 47 – B

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A47B 13/00 (2006.01) A47B 3/00 (2006.01) A47B 3/087 (2006.01) A47B 3/091 (2006.01) A47B 13/08 (2006.01) A63B 63/08 (2006.01) F16B 12/24 (2006.01) B29C 49/00 (2006.01)

Patent

CA 2469576

Blow molded plastic structures are provided for use in various structures such as, but not limited to, tables (10), chairs, walls, backboards (250), storage bins, sports equipment and the like. The blow molded plastic structure has a first surface (14) and a second surface (16) extending between a first end and a second end and forming a chamber there between. A plurality of depressions (200) are formed on the second surface (16) and extends into the chamber. The depressions (200) are usually unitary structures formed by a depression wall. Generally, the steeper the depression wall, the more strength is provided to the structure. In addition, where the plurality of depressions has low profile and a greater density, increased strength is provided to the structure. The depression (200) may or may not be joined to the first surface (14).

La présente invention concerne des structures de plastique soufflé destinées à diverses structures telles que notamment, des tables (10), des chaises, des parois, des tableaux noirs (250), des corbeilles de stockage, des équipements de sports et des éléments similaires. Cette structure de plastique soufflé possède une première surface (14) et une seconde surface (16) qui s'étendent entre une première extrémité et une seconde extrémité et qui forment une chambre entre celle-ci. Une pluralité de dépressions (200) sont formées sur la seconde surface (16) et s'étendent dans la chambre. Ces dépressions (200) sont habituellement des structures unitaires formées par une paroi de dépression. Généralement , plus cette paroi est abrupte, plus la structure est résistante. En outre, si cette pluralité de dépressions est surbaissée et possède une plus grande densité, la résistance de la structure est accrue. Cette dépression (200) peut être reliée ou non à la première surface (14).

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