Patent ID: 6389620
Filing Date: 2002-05-21
Classification: A45F

Abstract:
A method of forming a bed from a piece of sheet material having symmetry about its longitudinal axis, said method comprisingfolding opposed lateral edges of said material upward and inward a first time toward said axis, forming a two-layer item having lateral folded edges, folding said lateral folded edges of said material upward and inward a second time toward said axis, forming a four-layer item having lateral twice-folded edges, folding said lateral folded edges of said material upward and inward a third time toward said axis, forming an eight-layer item having lateral thrice-folded edges, folding said lateral folded edges of said material upward and inward a fourth time toward said axis, forming a sixteen-layer item having lateral four times-folded edges, folding said material in half along said axis, forming a thirty-two layer bundle of folds, permanently securing said folds together, and forming holes in said secured folds through which a ridge cord can be inserted.