Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Superimposed three-dimensional units
Patent
1975-10-14
1977-08-30
Bell, J. Karl
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Superimposed three-dimensional units
182179, 403 49, 403256, E04G 700, F16B 700
Patent
active
040445232
ABSTRACT:
The frame structure of the invention has a plurality of tubular uprights of circular cross-section each including a number of axially spaced ring flanges which are concentric with the respective upright and which are each formed with circumferentially distributed cut-outs of differing shapes. A plurality of bracing elements connect the respective uprights and each of them has two end portions. Each end portion is formed with an axial slot having a width at least equal to the thickness of the respective ring flanges and subdividing the respective end portion into two sections provided with registering openings extending normal to the elongation of the respective bracing element. A releasable wedge member extends through these openings across the slot and through one of the cut-outs of a ring flange which is in part located in the slot.
REFERENCES:
patent: 1460928 (1923-07-01), Tilden
patent: 2303428 (1942-12-01), Black
patent: 3420557 (1969-01-01), Francis
patent: 3432916 (1969-03-01), Fisher
patent: 3817641 (1974-06-01), Steele et al.
Bell J. Karl
Striker Michael J.
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