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US 7,458,192 B2Granted
Chair for supporting wire mesh
OwnerJohn Leslie Loweryinventor
Life of this patent
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OwnerJohn Leslie Loweryinventor
Estimating the term…
An improved chair for supporting intersecting wires forming a wire mesh at a pre-selected elevated position above a bearing surface during formation of a concrete slab is constructed having a base member shaped to rest on the bearing surface, a compressible support structure having a lower section affixed to the base member, a middle section and an upper section affixed to a setting shaped to support the wire mess at the elevated position. The chair is constructed having an improved compressible, generally bell-shape support structure having two pairs of opposing arched-shaped openings in the middle section forming two intersecting arches, each arch having a pair of opposing flexible legs that bow outward when a pre-determined load is applied to the upper section. The support structure further having a strengthening plate affixed on an interior surface of the upper section of the support structure formed by the intersecting arches, the chair being constructed from a blend of high density and low density crystalline polymer.
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;
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 base member comprising a disk having a distance between opposite points of its perimeter of at least 20% greater than the distance between ends of the arches of one of the two arches, and wherein said arches form 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;
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 having a top surface, a compressible support structure having a lower section, a middle section and an upper section, having a top support 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, and wherein said arches have a predefined break to direct said load, said arches forming a distinct structure from said setting, said arches intersecting one another to form at least in part the upper section of the support structure, 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.
Dependencies are inferred from the claim text.