Asymmetric spring components and innersprings for one-sided mattresses
AssigneeSealy Technology, LLC
InventorsBruce G. Barman, Larry DeMoss
Life of this patent
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Abstract
Asymmetric spring components for mattress and other flexible support structures, in the form of helical coil springs with turns in the coil body having varying pitch angles and radii, and a single support end for use in a one sided innersprings in one-sided mattresses. The coil springs are asymmetric about an axis of the coil or a horizontal reference plane, or both, and with ends of the coil springs shaped and sized differently to accommodate different mounting and support arrangements. Asymmetric coil springs can be contained in individual pockets or strings of pockets and arranged together to form an asymmetric pocketed coil innerspring for use in a one-sided mattress.
Claims14
An asymmetric innerspring having a plurality of interconnected asymmetric wire form coil springs, each of the coil springs having a generally helical coil body with a plurality of turns with at least two of the turns having a unique pitch or radius, a support end contiguous with one end of the coil body, and a base end contiguous with an opposite end of the coil body, the support ends of the coil springs being arranged in a plane to define a single support side to the asymmetric innerspring, wherein there is a greater density of wire in an upper half of the innerspring than in a lower half of the innerspring, wherein the largest pitch angles of the coil springs are proximate to the base ends of the coil springs, and wherein the smallest pitch angles of the coil springs are proximate to the support ends of the coil springs, and wherein the coil springs are interconnected at the support ends.
A one-sided mattress with a single sleep surface, the one-sided mattress comprising an asymmetric innerspring with a plurality of asymmetric coil springs, each asymmetric coil spring having a support end and a base end, and an asymmetric coil spring body between the support end and the base end wherein a configuration of the coil spring proximate to the support end is different than a configuration of the coil spring proximate to the base end, the support ends of the asymmetric coil springs arranged in a plane to define a single support side to the asymmetric innerspring, the single support side of the asymmetric innerspring underlying and proximate to the single sleep surface of the one-sided mattress, wherein the asymmetric innerspring has an upper region formed by an upper half of the asymmetric coil springs, and a lower region formed by a lower half of the asymmetric coil springs, and wherein a lower half of each of the asymmetric coil springs has fewer turns in the coil body than the upper half, whereby the asymmetric innerspring has a lesser amount of coil spring material in the lower region than in the upper region, and the coil springs are connected together at the support ends.
Dependencies are inferred from the claim text.