Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Side-by-side terminus shafts; e.g. – truss
Patent
1993-06-30
1995-08-01
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
52667, 52668, E04C 302
Patent
active
054371368
ABSTRACT:
Known lattice girders consist of two structural chord members joined to each other by a so-called lattice snake welded at its points of inversion to said structural chord members. To circumvent this welding, structural chord members 11 are used which comprise mutually opposite longitudinal slots 18 and thereunder a longitudinal chamber 19. The lattice-snake of the prior art is replaced by individual struts 13 evincing an I section and matching the structural chord members 11. The longitudinal ends of the struts 13 are cut at acute angles and parallel to each other. The two flanges 16 of the struts 13 comprise slots 21 at both ends and parallel to the longitudinal ends of the struts 13. Thereby the struts 13 can be snugly inserted into the longitudinal slots 18 and the chamber 19 of the structural chord members 11 wherein they butt each other.
REFERENCES:
patent: 951348 (1910-03-01), Stragiotti
patent: 1376150 (1921-04-01), Miller
patent: 2654579 (1953-10-01), Cremens
patent: 3612585 (1971-10-01), Mayr
patent: 3672710 (1972-06-01), Kroop
patent: 3748778 (1973-07-01), Ellies et al.
patent: 4485597 (1984-12-01), Worrallo
patent: 4918899 (1990-04-01), Karytinos
Meroform Catalog Construction System M12 (1990) (pp. 26, 27).
Canfield Robert J.
Friedman Carl D.
MERO-Raumstruktur GmbH & Co
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