Power transmission belt

F - Mech Eng,Light,Heat,Weapons – 16 – G

Patent

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Details

F16G 5/20 (2006.01)

Patent

CA 2648185

A power transmission belt (20) comprising a body (11) comprising an elastomeric material and having tensile members (10) running in a longitudinal direction, the body having a pulley-engaging region (12) having a profile; the pulley-engaging region comprising a fibrous nonwoven fabric material (15); characterized in that the fibers of the nonwoven material comprise acrylic fibers. The acrylic fibers are preferably micro-fibers of less than about 1.5 dpf and having an average diameter of 13.5 microns or less and an average length of about 1 to about 10 mm. The nonwoven material may be commingled with the elastomeric material in the pulley engaging region. Up to about 75% by weight of the fibers of the nonwoven material may comprise non-acrylic fibers such as other synthetic fibers, natural fibers, or cellulosic fibers.

La présente invention concerne une courroie de transmission (20) comprenant un corps (11) qui comprend un matériau élastomère et présente des éléments de tension (10) s'étendant dans une direction longitudinale, le corps présentant une région d'engagement de poulie (12) présentant un profile, la région d'engagement de poulie comprenant un tissu non-tissé fibreux (15), caractérisée en ce que les fibres du non-tissé comprennent des fibres acryliques. Les fibres acryliques sont de préférence des microfibres de moins d'environ 1,5 dpf, présentant un diamètre moyen de 13,5 microns ou moins et une longueur moyenne comprise entre environ 1 et environ 10 mm. Le non-tissé peut être combiné au matériau élastomère dans la région d'engagement de poulie. Jusqu'à environ 75 % en poids des fibres du non-tissé peuvent comprendre des fibres non acryliques, telles que d'autres fibres synthétiques, fibres naturelles ou fibres cellulosiques.

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