Patent ID: 8568260
Filing Date: 2013-10-29
Classification: D02G,F16G

Abstract:
1. A method of providing a toothed belt for use in oil, the method comprising: providing a toothed belt adapted for use in substantially continuous contact with oil or partially immersed in oil, said belt comprising a body, a plurality of teeth extending from at least a first surface of said body, said teeth being coated by a first fabric, said first fabric is externally coated by a first resistant layer, which comprises a fluorinated plastomer, a first elastomeric material, and a vulcanizing agent; and in that said fluorinated plastomer is present in said first resistant layer in an amount greater than said first elastomeric material, and a plurality of resistant inserts; wherein said resistant inserts comprise twisted yarns produced from fibers of at least a first and a second material and said first fibrous material entirely surrounds said second fibrous material; said first and second materials are chosen from the group consisting of glass fibers, aramid fibers, polyester fibers, PBO fibers, and carbon fibers; wherein the twisted yarns form an insert of said resistant inserts with dimensions between 0.7 and 1.4 mm, said body comprising as main elastomeric material a copolymer formed from a diene and from a monomer containing nitrile groups in a percentage between 33 and 49 weight percent with respect to the final copolymer.