| 摘要 |
The invention relates to a spring mattress comprising a plurality of interconnected coil spring elements, whereby the mattress includes at least two layers extending in parallel with the plane on the mattress and each exhibiting different properties of resilience. The feature characterizing the mattress in accordance with the invention are that the same coil springs extend across both the layers and that these coil springs exhibit a higher degree of bias only along part of their extension, thus forming the layers exhibiting different properties of resilience. |
