Patent ID: 6962029

Claim:
A chair for supporting wires forming a wire mesh 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, 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 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, the arches intersecting one another to form at least in part the upper section of the support structure and wherein the support structure further comprises a strengthening plate affixed on an interior surface of the upper section.