Toothed belt

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

Patent

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Details

F16G 1/28 (2006.01)

Patent

CA 2556750

Toothed belt (1) for use in contact with oil and comprising a body (2) and a number of teeth (4) extending from at least one surface of the body (2); the teeth are coated by a fabric (5); a resistant layer (8) comprising a plastomer based on fluorine with the addition of elastomeric material, in which the plastomer is present in a larger quantity than the elastomeric material, is applied by adhesion onto the coating fabric (5). The elastomeric material forming the body (2) of the belt (1) is a copolymer obtained from a dienic monomer and a monomer containing nitrile groups, in which the nitrile groups are between 33% and 49%, preferably 39%, in weight with respect to the copolymer.

L'invention concerne une courroie dentée (1) destinée à entrer en contact avec de l'huile et comprenant un corps (2) ainsi qu'un certain nombre de dents (4) qui font saillie de la surface du corps (2). Les dents sont recouvertes d'un tissu (5), et on applique par procédé d'adhérence audit tissu (5) une couche résistante (8) constituée d'un plastomère à base de fluor et comportant du matériau élastomère, le plastomère étant présent dans des quantités plus élevées que le matériau élastomère. Le matériau élastomère formant le corps (2) de la courroie (1) est un copolymère obtenu à partir d'un monomère diénique et d'un monomère contenant des groupes nitriles, lesdits groupes nitriles étant compris entre 33 % et 49 %, de préférence 39 % en poids par rapport au copolymère.

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