Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Patent
1980-06-02
1982-11-09
Perham, Alfred C.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
52 40, 52655, E04H 1210
Patent
active
043577865
ABSTRACT:
A self-supporting steel tower for power supply lines at a voltage from 230 to 1000 KV is substantially a tri-dimensional truss structure having a trunk-of-pyramid shape with a triangular cross-section, in particular in the form of an isosceles right triangle. The tower side corresponding to the hypotenuse of the triangle is directed vertically and the other two sides corresponding to the cathetuses are slightly sloping, whereby the tower is tapered upward.
REFERENCES:
patent: 814339 (1906-03-01), Westinghouse
patent: 920157 (1909-05-01), Kreer
Perham Alfred C.
S.A.E. Societa Anonima Elettrificazione S.p.A.
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