Patent ID: 7458192

Claim:
A chair for supporting wires at a pre-selected elevated position above a bearing surface during formation of a slab construction having a base member shaped to rest on the bearing surface, a compressible support structure having a lower section, a middle section and an upper section having a top surface, the lower section being affixed to the base member, and a setting affixed to the upper section for supporting the wire mesh in the elevated position, the improvement to which comprises the support structure having a generally bell shape with two pairs of opposing arched-shaped openings in the middle section forming two arches, each arch having a pair of opposing compressible, resilient legs attached to said setting and constructed of material that bows outward when a load of a pre-determined minimum amount is applied to the upper section and has a resiliency to return to its original shape when the load is reduced below the pre-determined minimum amount, said arches intersecting one another to form at least in part the upper section of the support structure; said arches forming a distinct structure from said setting, said setting comprising four flexible prongs affixed to, and extending upwards from, the top surface of the upper section of the support structure, to present an additional load-bearing component distinguishable from the upper section of the support structure.