Rebar and beam bolster, slab and beam bolster upper

Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Spacer-positioner; e.g. – rebar chair

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Details

E04C 520

Patent

active

049427148

ABSTRACT:
A bolster is constructed of non-biodegradable material. The bolster includes an elongated support member and legs for holding the support member in an upright position. An assembly is also provided to serially connect the bolsters together. More specifically, one end of the bolster includes a male connector and the opposite end a female connector. The non-biodegradable material is impervious to water and both shatter-resistant and sag-resistant within a temperature range between 220.degree. and -40.degree. F. The material also has a flex modulus of between 200,000 and 1,500,000. Preferably, the material also bonds with concrete so as to form a substantially watertight seal.

REFERENCES:
patent: 824595 (1906-06-01), Scofield
patent: 2106576 (1938-01-01), Reiland
patent: 2116584 (1938-05-01), Shelby
patent: 3233383 (1966-02-01), Salm
patent: 3512331 (1970-05-01), Palmer
patent: 3529392 (1970-09-01), Adams
patent: 3839838 (1974-10-01), Vigh

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