US 2007/0240658 A1 · Toothed Belt

Abstract

Toothed belt for use in contact with oil and comprising a body and a number of teeth extending from at least one surface of the body; the teeth are coated by a fabric; a resistant layer 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. The elastomeric material forming the body of the belt 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.

Claims31

Dependent claims

Toothed belt for use in contact with oil and comprising a body and a number of teeth extending from at least one first surface of said body;

said teeth being coated by a first fabric, said fabric being externally coated with a resistant layer, in which:
said resistant layer comprises a fluorinated plastomer, a first elastomeric material and a vulcanisation agent;
said fluorinated plastomer is present in said resistant layer in a larger quantity than said first elastomeric material;
said body comprises a compound based on a second elastomeric material formed of a copolymer obtained from a dienic monomer and a monomer containing nitrile groups;
said nitrile groups are in percentage between 33% and 49% in weight with respect to the weight of said copolymer.

2 more elements

Dependencies are inferred from the claim text.

Toothed Belt

Life of this patent

Toothed Belt

Life of this patent

Abstract

Claims31