Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Patent
1978-05-01
1980-01-15
Ridgill, Jr., James L.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
E04C 302
Patent
active
041831900
ABSTRACT:
A tube and ball truss system for making a structural lattice which includes a plurality of hollow metal balls spaced in a three-dimensional array, each ball having a set of radial through-openings as well as an access opening on one side, adjacent ones of the balls being interconnected by metal tubes having an outer cylindrical wall and a central axially extending core joined by integral webs, the ends of the core having axially tapped holes engageable by clamping bolts extending through the through-openings in the balls. The ball surface is locally flattened to form land surfaces surrounding the through-openings for flat seating of the end surfaces of the tubes; indeed, the land surfaces are recessed to provide shallow socketed engagement and precise alignment with the ends of the tubes.
REFERENCES:
patent: 3110754 (1963-11-01), Witort et al.
patent: 3789562 (1974-02-01), Chicchis et al.
patent: 4027449 (1977-06-01), Cilvetti
Leydig C. Frederick
Richter David J.
Ridgill, Jr. James L.
Roper Corporation
Voit Richard L.
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