Lightweight plastic furniture

A lightweight, high-strength support platform for use in constructing plastic furniture, comprising:

• (a) a support member having a generally planar first surface having a curved peripheral portion and a spaced apart second surface;
• and
• (b) a plastic structural reinforcement core connected to said support member, said core having a curved central portion and a peripheral flange circumscribing said central portion, said central portion being provided with a multiplicity of specially configured protuberances each comprising:
• (i) a base portion;
• (ii) a spaced apart closure wall;
• and
• (iii) a tapered connecting wall interconnecting a base portion and said closure wall;
• (c) an enclosure panel connected to said peripheral flange of said core, said enclosure panel having a curved channel shaped portion and a central portion;
• and
• (d) a reinforcement frame disposed within said channel shaped portion of said enclosure panel and between said core and said enclosure panel, said reinforcement frame comprising a curved beam circumscribing said central portion of said enclosure panel.

A lightweight, high-strength, non-rectangular shaped support platform for use in constructing plastic furniture, comprising:

• (a) a support member having a generally planar first surface having a peripheral portion and a spaced apart second surface;
• and
• (b) a plastic structural reinforcement core connected to said support member, said core having a central portion and a peripheral flange circumscribing said central portion, said central portion being provided with a multiplicity of specially configured protuberances each comprising:
• (i) a base portion;
• (ii) a spaced apart closure wall;
• and
• (iii) a tapered connecting wall interconnecting a base portion and said closure wall;
• (c) an enclosure panel connected to said peripheral flange of said core, said enclosure panel including a central portion and a curved, channel shaped portion circumscribing said central portion;
• and
• (d) a reinforcement frame disposed within said curved channel shaped portion of said enclosure panel, said reinforcement frame comprising a curved reinforcement beam which is generally "I" shaped in cross section.