Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Spacer-positioner; e.g. – rebar chair
Patent
1988-07-05
1989-06-06
Scherbel, David A.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Spacer-positioner; e.g., rebar chair
52677, 52DIG1, E04C 516
Patent
active
048359343
ABSTRACT:
A spacer for concrete wire reinforcement is comprised of a heavy gauge, flat metal spring steel band, having a hook at one end for receipt of one of two parallel wires of a wire mesh, and a curved and hook-like opposite end which can be resiliently forced into position under the second wire to securely retain the spacer in position. A generally V-shaped projection is provided on the spacer to position the wire mesh at the desired distance from the surface of the concrete mold. The apex of the projection is formed to have a convex wide-radius "ball-bearing" shape. This shape lends increased strength to the spacer and also results in a greatly reduced area of contact between the spacer projection and the mold wall. The spacer also includes a tail-like extension on the second hook-like opposite end, which extension coacts with a pronged tool during installation of the spacer on a wire mesh.
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Hawkeye Catalogue, No. 182.
Chilcot Jr. Richard E.
Scherbel David A.
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