Patent ID: 9161634
Filing Date: 2015-10-20
Classification: A47C,F16F

Abstract:
1. An innerspring assembly including a plurality of spring coils, comprising at least one asymmetrical spring assembly, each asymmetrical spring assembly having within itself and separate from another asymmetrical spring assembly; an upper spring portion with a first substantially linear spring rate and a first substantially nonlinear spring rate, and a lower spring portion disposed below the upper spring portion with a second substantially linear spring rate, a supporting layer between the upper spring portion and the lower spring portion, wherein the supporting layer separates the upper spring portion from the lower spring portion such that there is no direct contact between the upper and lower spring portions and is configured to independently support only the upper spring portion disposed directly thereon, wherein the second substantially linear spring rate is greater than the first substantially linear spring rate, and wherein the spring coil is configured such that in first compressed state, the upper portion is substantially compressed and lower portion is substantially uncompressed.