Foam seat cushion with clamped edges

Claim 1

A seat comprising, in combination, a synthetic foam cushion having top and bottom surfaces and a peripheral edge, a flexible cover attached to said cushion top surface and extending over said cushion peripheral edge and having a flexible peripheral flap extending beyond said cushion peripheral edge, said flap having a terminating edge, a substantially rigid pan having a configuration substantially similar to that of said cushion bottom surface and having a periphery and a peripheral region, spaced openings defined in said pan peripheral region inwardly of said pan periphery, a substantially closed periphery centrally open retainer separate from said pan and having a configuration similar to that of said pan peripheral region, a plurality of spaced elongated lances defined on said retainer corresponding in spacing to said pan peripheral region openings, and fastening means attaching said retainer to said pan peripheral region with said lances extending through said pan openings, said flap including a portion extending over said pan periphery and engaging said pan peripheral region, said retainer being superimposed over said flap portion whereby said flap portion is sandwiched between said retainer and said pan peripheral region and said lances penetrate said flap portion to maintain said flap portion in position prior to installation of said fastening means, said flap terminating edge being located between said retainer and said pan peripheral region wherein said retainer shields said flap terminating edge from view.