Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Three-dimensional space-defining
Patent
1982-08-24
1984-08-28
Murtagh, John E.
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Three-dimensional space-defining
E04C 506
Patent
active
044675836
ABSTRACT:
A reinforced-concrete column reinforcement comprises at least two hoops centered on and spaced apart along an axis and a plurality of deformable holders fixed at angular spacings on these hoops. Respective longitudinal reinforcement bars each extend axially through one of the holders of one of the hoops and through a respective one of the holders of the other of the hoops. The holders grip these bars. A helicoidal wrapping wire generally centered on the axis is welded to axially extending spacer rods fixed to the hoops and surrounds these rods and the reinforcement bars. The holders may be constituted as malleable metal elements welded on the hoops and forming passages through which the reinforcement bars pass. Once these reinforcement bars are fitted through the passages these elements may be deformed into tight clenching contact with the bars.
REFERENCES:
patent: 289165 (1883-11-01), Strohm
patent: 822587 (1906-06-01), Cummings
patent: 1008209 (1911-11-01), Skinner
patent: 1096685 (1914-05-01), Cummings
patent: 1485811 (1924-03-01), Pederson
patent: 3957087 (1956-05-01), Johnston
Dubno Herbert
Landshuter Baueisenbiegerei GmbH
Murtagh John E.
Ross Karl F.
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