Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Spacer-positioner; e.g. – rebar chair
Patent
1991-12-19
1994-06-28
Safavi, Michael
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Spacer-positioner; e.g., rebar chair
52677, 52678, 52687, 527411, 264275, 264277, E04C 520, B29C 3700
Patent
active
053235827
ABSTRACT:
An apparatus for supporting concrete reinforcement bar within a form. The apparatus comprises a plurality of legs so formed that, when the apparatus is placed in any random orientation on a surface of the form, the ends of at least three legs contact the surface of the form and at least two legs extend upwardly to receive the reinforcement bar. Preferably, any given leg is adjacent to four legs and is non-adjacent to one leg, where the angle between the given leg and any adjacent leg is 90.degree. and the angle between the given leg and any non-adjacent leg is 180.degree..
REFERENCES:
patent: D70800 (1926-08-01), McDonald
patent: 3255565 (1966-06-01), Menzel
patent: 3387423 (1968-06-01), Andersen
patent: 3471987 (1969-10-01), Yelsma
patent: 3788025 (1974-01-01), Holmes
patent: 3830032 (1974-08-01), Robb
patent: 4498270 (1985-02-01), Ilukowicz
patent: 4682461 (1987-07-01), Sizemore
Plastic Concrete Rebar Accessories, Product Guide and Price List, Dura-Tech, Dayton, Ohio.
General Information, FOSROC-PRECO Product Catalog.
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