Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Spacer-positioner; e.g. – rebar chair
Patent
1981-09-28
1984-06-05
Bell, J. Karl
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Spacer-positioner; e.g., rebar chair
52687, E04C 516
Patent
active
044520263
ABSTRACT:
An apparatus, method and assembly are disclosed for spacing a wire reinforcement from a concrete article form such as pipe form. Spacers are employed which include a U-shaped spacer portion extending from a mounting means which includes a positioning means, a torsion means, and arms extending therefrom to hook about a wire in said fabric and be held thereto substantially by the torsion generated within the torsion means. The reinforcement spacers are mounted at spaced points on a pipe reinforcing cage, for example, around the circumference and along the length of the cage so that each spacer portion extends radially outwardly therefrom the hold the cage in properly spaced relationship to the pipe form.
REFERENCES:
patent: 1750286 (1930-03-01), Sherwan
patent: 3172239 (1965-03-01), Larkin
patent: 3440792 (1969-04-01), Schmidgall
patent: 3471986 (1969-10-01), Swenson
patent: 3512330 (1970-05-01), Shlesinger
patent: 3722164 (1973-03-01), Schmidgall
patent: 3861096 (1975-01-01), Emmons
patent: 4301638 (1981-11-01), Schmidgall
Spacers for Reinforced Concrete Pipe, CMC, Blue Ridge Rubber Co., 1976, (price list).
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