Toothed belt and timing control system
AssigneeDayco Europe S.R.L.
InventorsMarco Di Meco, Carlo Baldovino
Life of this patent
Estimating the term…
Abstract
Toothed belt comprising a body, a plurality of resistant inserts or cords and a plurality of teeth extending from at least one surface of the body; the teeth are coated with a coating fabric. The body is made of a first elastomeric material formed. The fabric is treated with a fabric treatment comprising a second elastomeric material. The resistant inserts or cords are treated with cord treatment comprising a third elastomeric material. The first, second and third elastomeric material are formed of a mixture of one or more copolymers obtained from diene monomers and monomers containing nitrile groups, in which the nitrile groups are between 30 wt % and 39 wt %.
Claims18
A method of forming a belt comprising:
- forming a plurality of cords;
- treating said cords with an aqueous mixture of one or more copolymers not comprising resorcin-formaldehyde latex, obtained starting from a diene monomer and a monomer containing nitrile groups in a weight percentage of between 30% and 39% with respect to the total weight of said copolymer, thereby forming treated cords:
- wherein said aqueous mixture of one or more copolymer not comprising resorcinol and formaldehyde is constituted by a coating liquid comprising a rubber latex comprising said copolymer, a vulcanizing agent and at least 50% weight of water,
- forming a fabric;
- treating said fabric with a non aqueous mixture of one or more copolymers not comprising resorcinol and formaldehyde, obtained starting from a diene monomer and a monomer containing nitrile groups in a weight percentage of between 30 wt % and 39 wt % with respect to the total weight of said copolymers obtained starting from a diene monomer and a monomer containing nitrile groups in a weight percentage of between 30 wt % to 39 wt % with respect to the total weight of said copolymers, thereby forming a treated fabric;
- forming a body and embedding said treated cords in said body, said body having a plurality of teeth extending from at least one first surface of said body, said body formed of a mixture of one or more copolymers, obtained starting from a diene monomer and a monomer containing nitrile groups in a weight percentage of between 30 wt % to 39 wt % with respect to the total weight of said copolymers and coating said teeth with said treated fabric,
- wherein said fabric is externally coated with a resistant layer comprising a fluorinated plastomer, an elastomeric material and a vulcanizing agent.
Dependencies are inferred from the claim text.