Patent ID: 7550855

Claim:
A spring contact structure, comprising: a substrate; a first microspring comprising an anchor portion and a free portion, the anchor portion being fixed to said substrate, in the absence of an external force applied to said first microspring the free portion of said first microspring having a non-planar profile, the free portion being free to move relative to said substrate; a spacing layer; and a second microspring comprising an anchor portion and a free portion, in the absence of an external force applied to said first microspring the free portion of said first microspring having a non-planar profile, a portion of said second microspring vertically disposed apart from said first microspring by said spacing layer, the anchor portion being fixed to said spacing layer and the free portion being free to move relative to said substrate, said second microspring located and shaped such that, in the absence of an external force applied to each of said first and second microsprings, said second microspring is in physical contact with said first microspring.