Load bearing surface

Details Load bearing surface Load bearing surface

2005-04-22

2008-10-28

Rodriguez, Pam (Department: 3683)

Spring devices

Cushion for human comfort

C297S452150, C428S185000

Reexamination Certificate

active

07441758

ABSTRACT:
An elastomeric load bearing surface with different load support characteristics in different directions. In one embodiment, the surface includes an elastomeric membrane that is oriented in only a single direction, for example, by compression or stretching. In another embodiment, the surface includes mechanical structures, such as connectors, variations in thickness and apertures, that vary the load support characteristics in different directions. In another aspect, the present invention provides a multilayer load bearing surface in which the layers cooperate to provide a controlled force/deflection profile that is variable in different regions of the surface. In one embodiment, the upper layer includes a plurality of loosely connected nodes and a lower layer having a plurality of resilient elements that separately support each node.

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