Screens
AssigneeN. Greening Limited
InventorsNorman Savage, Douglas A. Sumner
Life of this patent
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Abstract
In apertured panels comprising a plurality of wires (10) having loops (12) at intervals along their lengths and spaced so as to define slit apertures (13) between adjacent wires, the wires being connected together as a panel by tie rods, tubes or the like (11) extending through aligned loops thereof, loop parts of at least some of the wires are secured to a rib member or members extending transversely thereof. The rib member(s) may cooperate seatingly with the loops over at least part of the length of the rib member(s). The rib is preferably a hollow member, for example an inverted V-section channel. Such an arrangement is intended to overcome problems of aligning the rib to the loop in manufacture and also of distortion, specifically bowing, of the rib or/and underlying tie rod.
Claims19
An apertured panel comprising a screen constituted by, in combination:
- (i) a plurality of wire members each having a plurality of loops formed therein with the individual loops being disposed at intervals along the length of the wire member, the wire members being disposed side by side and at a spacing so as collectively to present a major face of the screen having slit apertures defined between adjacent wires, the loops extending from the opposite major face of the screen,
- (ii) at least one tie element positioned through aligned respective loops disposed side by side of wire members of the plurality of wire members, and tied to said plurality of wire members, and
- (iii) at least one rib member secured to said aligned loops by at least one weld and extending therefrom in a direction away from said opposite major face.
Dependencies are inferred from the claim text.