Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Fabric or lattice; e.g. – indeterminate grating
Patent
1981-12-14
1988-08-09
Friedman, Carl D.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Fabric or lattice; e.g., indeterminate grating
52664, 52666, 52668, E04C 242
Patent
active
047619309
ABSTRACT:
An interlock grate structure is provided which includes longitudinal load bearing span bars having lateral locating slots spaced therealong for receiving transverse tie bars and transverse tie bars having axial locking means which engage the longitudinal span bar at the point of juncture and prevent axial displacement of the tie bar relative to the span bar. A longitudinal interlock member serves to interlock the position of the transverse tie bar locking means with respect to the longitudinal span bar and in some instances provides added structural support.
REFERENCES:
patent: 1005012 (1911-10-01), Forsyth
patent: 1024001 (1912-04-01), Forsyth
patent: 1214928 (1917-02-01), Lachman
patent: 2645985 (1953-07-01), Beebe et al.
patent: 3540178 (1970-11-01), Altissimo
patent: 3948013 (1976-04-01), Lobaugh et al.
patent: 4051639 (1977-10-01), Lombardi et al.
patent: 4112640 (1978-09-01), Reifsnyder
patent: 4126980 (1978-11-01), Parsons
Fibergrate Corporation
Friedman Carl D.
Safavi Michael
LandOfFree
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