HIGH-STRENGTH, LIGHTWEIGHT BLOW-MOLDED PLASTIC STRUCTURES
First Claim
1. A structure constructed from blow-molded plastic having a generally planar configuration and a hollow interior portion formed during the blow-molding process, the blow-molded plastic structure comprising:
- a first outer wall;
a second outer wall that is disposed generally parallel to the first outer wall, the first outer wall and the second outer wall at least partially enclosing the hollow interior portion formed during the blow-molding process; and
a plurality of depressions integrally formed in the second outer wall and extending towards the first outer wall, the plurality of depressions, the first outer wall and the second outer wall being integrally formed as part of a unitary, one-piece construction, at least a majority of the plurality of depressions being disposed in a pattern, the pattern of depressions covering at least a majority of the second outer wall, the pattern of depressions comprising;
at least one row of depressions, each row of depressions including at least five depressions, each depression in each row of depressions being spaced apart from an adjacent depression in the row of depressions by a distance that is generally equal to or less than three times an average distance separating the first outer wall and the second outer wall; and
at least one column of depressions, each column of depressions including at least five depressions, each depression in each column of depressions being spaced apart from an adjacent depression in the column of depressions by a distance that is generally equal to or less than three times the average distance separating the first outer wall and the second outer wall.
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Accused Products
Abstract
Blow molded plastic structures are provided for use in various structures such as, but not limited to, tables, chairs, walls, backboards, storage bins, sports equipment and the like. The blow molded plastic structure has a first surface and a second surface extending between a first end and a second end and forming a chamber there between. A plurality of depressions is formed on the second surface and extends into the chamber. The depressions 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 a low profile and a greater density, increased strength is provided to the structure. The depressions may or may not be joined to the first surface.
46 Citations
27 Claims
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1. A structure constructed from blow-molded plastic having a generally planar configuration and a hollow interior portion formed during the blow-molding process, the blow-molded plastic structure comprising:
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a first outer wall; a second outer wall that is disposed generally parallel to the first outer wall, the first outer wall and the second outer wall at least partially enclosing the hollow interior portion formed during the blow-molding process; and a plurality of depressions integrally formed in the second outer wall and extending towards the first outer wall, the plurality of depressions, the first outer wall and the second outer wall being integrally formed as part of a unitary, one-piece construction, at least a majority of the plurality of depressions being disposed in a pattern, the pattern of depressions covering at least a majority of the second outer wall, the pattern of depressions comprising; at least one row of depressions, each row of depressions including at least five depressions, each depression in each row of depressions being spaced apart from an adjacent depression in the row of depressions by a distance that is generally equal to or less than three times an average distance separating the first outer wall and the second outer wall; and at least one column of depressions, each column of depressions including at least five depressions, each depression in each column of depressions being spaced apart from an adjacent depression in the column of depressions by a distance that is generally equal to or less than three times the average distance separating the first outer wall and the second outer wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification