Expandable pintle wires

Details Expandable pintle wires Expandable pintle wires

F - Mech Eng,Light,Heat,Weapons

16

G

F16G 13/02 (2006.01) D21F 1/00 (2006.01) F16G 3/02 (2006.01)

Patent

CA 2269233

A pintle wire (10) for insertion through interdigitating end loops of a belt fabric or of a spiral connector, is disclosed which is expandable after insertion into the seam, for example by means of a sheath (12) which includes a thermally activated expanding agent. This is subject to heating to expand the sheath, causing the pintle wire to swell and fill voids in the seam area reducing permeability in the seam and thus reducing marking of paper webs carried by the belt.

L'invention concerne un fil (10) de charnière destiné à être introduit à travers des boucles terminales entremêlées d'une toile de courroie ou d'un connecteur en spirale. Ce fil de charnière est extensible après son insertion dans la couture, par exemple grâce à une enveloppe (12) comprenant un agent gonflant activé thermiquement. L'agent gonflant est chauffé pour dilater l'enveloppe, ce qui provoque le gonflement du fil de charnière qui remplit les vides dans la zone de la couture et réduit la perméabilité de la couture et donc les marques sur les bandes continues de papier auxquelles la courroie sert de support.

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