Spiral link belt with low permeability to air and method for its

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Embodying intertwined or helical component

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Details

139383A, 139383AA, 1623582, 162900, 162902, 428223, D03D 1300

Patent

active

055144560

ABSTRACT:
A spiral link belt has a plurality of plastic helices connected to one another which interlock in the manner of a slide fastener with neighboring helices. Overlapping widening arcs form a channel and pintle wires run through the channels and thereby connect the helices. Flat wires are inserted in the helices to reduce the air permeability of the spiral link belt. The flat wires are tilted relative to the plane of the spiral link belt. The flat wire running inside a helix can be wider than the smallest distance between the two helices connected to this helix. During production, the spiral link belt is thermoset only after the insertion of the flat wires.

REFERENCES:
patent: 4362776 (1982-12-01), Lefferts et al.
patent: 4381612 (1983-05-01), Shank
patent: 4500590 (1985-02-01), Smith
patent: 4520065 (1985-05-01), Leo
patent: 4564992 (1986-01-01), Lefferts
patent: 5217577 (1993-06-01), Steiner
patent: 5334440 (1994-08-01), Halterbeck et al.

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