Asymmetric spring components and innersprings for one-sided mattresses
AssigneeSealy, Incorporated
InventorsBruce 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.
Claims46
An asymmetric wire form coil spring adapted for use in a one-sided innerspring for a one-sided mattress, the asymmetric coil spring comprising:
- a generally helical coil body with a plurality of turns of wire, each turn having a radius measured from an axis of the coil body and a pitch angle, at least one of the pitch angles of the turns being greater than another of the pitch angles of the turns, and
- a lower end contiguous with a lower region of the coil body and lying in a plane which is generally perpendicular to the axis of the coil body, and
- an upper support end contiguous with an upper region of the coil body and lying in a plane which is generally perpendicular to the axis of the coil body, the upper end serving as the single support end of the coil.
An asymmetric wire form coil spring designed to support a load only at a support end, the coil spring comprising:
- a helical coil body with a plurality of turns of wire, each turn having a radius measured from an axis of the coil body, a radius of one of the turns of the coil body being greater than a radius of another of the turns of the coil body;
- a support end contiguous with an upper region of the coil body and lying in a plane which is generally perpendicular to the axis of the coil body, the support end oriented for application of a load to the coil spring;
- a base end contiguous with a lower region of the coil body and lying in a plane which is generally perpendicular to the axis of the coil body;
- the support and base ends each having a radius measured from the axis of the coil body, with the radius of at least one of the turns of the coil body being different than a radius of the support end or base end.
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.
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.
Dependencies are inferred from the claim text.