Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Side-by-side terminus shafts; e.g. – truss
Patent
1983-12-07
1986-04-29
Friedman, Carl D.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Side-by-side terminus shafts; e.g., truss
52376, 52729, E04C 302
Patent
active
045848092
ABSTRACT:
The beam disclosed has a bulky wooden top flange, an extruded aluminum bottom flange, and a plywood web. The web is tailed-in to the two flanges to form a unitary whole. The structure takes advantage of the rigidity of wood under compression and the strength of a slim extruded section of aluminum under tension.
REFERENCES:
patent: 1737601 (1929-12-01), Macomber
patent: 1951811 (1934-03-01), Schaffert
patent: 3960637 (1976-06-01), Ostrow
patent: 4159604 (1979-07-01), Burrell
patent: 4191000 (1980-03-01), Henderson
Friedman Carl D.
Hewson Donald E.
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