Cold forged steel grating

Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Fabric or lattice; e.g. – indeterminate grating

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Details

52758A, 29160, 29509, 29522, E04C 242, E04C 504, B23P 512

Patent

active

039480135

ABSTRACT:
A cold forged steel grating is formed of a plurality of spaced parallel bearing bars secured to one another by a plurality of spaced parallel cross rods engaged in openings in the bearing bars adjacent their uppermost surfaces with the metal of the bearing bars adjacent the cross rods cold forged into engagement therewith and the metal of the cross rods adjacent the bearing bars flatened by cold forging to forcefully engage the opposite sides of said bearing bars and forming a sturdy rigid grating structure.

REFERENCES:
patent: 194541 (1877-08-01), Stark
patent: 857724 (1907-06-01), Dean
patent: 1734660 (1929-11-01), Williams et al.
patent: 2155694 (1939-04-01), Tench
patent: 2169649 (1949-08-01), Knapp et al.
patent: 2208020 (1940-07-01), Delanty
patent: 2241952 (1941-05-01), Lachman
patent: 2656903 (1953-10-01), Kerrigan

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