Toothed belt
AssigneeDAYCO EUROPE S.r.I.
InventorsCarlo BALDOVINO, Marco Di Meco, Tommaso Di Giacomo
Life of this patent
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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.
Claims20
An oil-resistant toothed belt 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.
Use in direct contact with oil or partially immersed in oil of a fluorinated plastomer in a resistant layer of a toothed belt, said toothed belt 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 said resistant layer.
A toothed belt for use with oil or in an oil wet environment comprising a body and a number of teeth extending from at least one first surface of said body;
- said teeth being coated by said fabric, said fabric being coated with a fluorinated plastomer.
Dependencies are inferred from the claim text.