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Coil-in-coil springs with non-linear loading responses and mattresses including the same

A coil spring and coil sleeve technology, which is applied in the field of coil sleeve coil springs, can solve the problems of high production cost of foam cushions, affecting the overall comfort of foam cushions, and reducing mechanical properties.

Active Publication Date: 2018-10-23
SEALY TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of some foams may degrade over time, which in turn affects the overall comfort of the foam cushion
Additionally, foam cushions are often more expensive to produce than metal spring cushions

Method used

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  • Coil-in-coil springs with non-linear loading responses and mattresses including the same
  • Coil-in-coil springs with non-linear loading responses and mattresses including the same
  • Coil-in-coil springs with non-linear loading responses and mattresses including the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The invention includes a coil sleeve coil spring and a cushion including the coil sleeve coil spring. In particular, the present invention includes a coil-in-coil spring that is composed of a continuous wire and exhibits a variable non-linear load response when compressed. Therefore, the coil-in-coil spring of the present invention provides a non-linear support for the user. This non-linear support usually exists in a foam cushion, but is achieved by using the coil-in-coil spring.

[0019] First reference figure 1 In an exemplary embodiment of the present invention, a coil-in-coil spring 10 composed of a continuous wire 20 forming an outer coil 30 and an inner coil 40 disposed within the outer coil 30 is provided. In addition, the continuous wire 20 forms a first spring portion 50, a second spring portion 60, and a third spring portion 70, which together form the outer coil 30 and the inner coil 40. Specifically, in figure 1 In the illustrated coil-in-coil spring 10, the ...

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PUM

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Abstract

A coil-in-coil spring is provided that exhibits a variable and non-linear loading response. The spring includes a first spring portion having a first spring constant, a second spring portion having asecond spring constant less than the first spring constant, and a third spring portion having a third spring constant less than the first spring constant and less than the second spring constant. Thefirst spring portion forms an outer coil of the coil-in-coil spring and the second spring portion, the third spring portion, or both the second spring portion and the third spring portion are positioned within the first spring portion and form an inner coil of the coil-in-coil spring. A multi-coil spring is also provided that includes an outer coil, an intermediate coil positioned within the outercoil, and an inner coil positioned with the intermediate coil.

Description

Technical field [0001] The invention relates to a coil sleeve coil spring and a cushion including the coil sleeve coil spring. In particular, the present invention relates to a coil-in-coil spring, which is composed of a continuous wire and exhibits a variable non-linear load response when compressed. Background technique [0002] Generally, when a uniaxial load is applied to the spring, the spring exhibits a linear compression rate. In other words, the force required to compress a typical spring by two inches is twice the force required to compress the same spring by one inch. The linear response of a spring is expressed by Hooke's law, which states that the force (F) required to extend or compress the spring a distance (D) is proportional to the distance. This relationship is expressed mathematically as F=kD, where k represents the spring constant of a particular spring. A high spring constant means that the spring needs more force to compress, and a low spring constant mean...

Claims

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Application Information

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IPC IPC(8): A47C27/06B68G9/00
CPCA47C27/064A47C27/065F16F3/04
Inventor 拉里·K·迪莫斯布赖恩·M·马努萨克达林·T·托马斯
Owner SEALY TECH LLC
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