Toothed belt
AssigneeBando Chemical Industries, Ltd.
InventorsYosuke Kagi, Masaki Kimura, Masaki Ochiai, Takayuki Kusano
Life of this patent
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Abstract
A cord of a toothed belt is made of a twisted yarn including a band-like material. The band-like material includes a filament bundle of high-strength glass fibers integrated together through a binder. The binder contains a rubber component, at least either a maleimide-based compound or a polyisocyanate compound, and a powdery inorganic filler. A surface of a reinforcing fabric facing opposite to the toothed belt body is coated with a surface-coating rubber layer made of a rubber composition containing a rubber component including hydrogenated nitrile-butadiene rubber as a main part.
Claims20
A toothed belt comprising:
- a toothed belt body made of rubber and having an endless rubber strip portion and a plurality of toothed rubber portions integrated with one surface of the rubber strip portion so as to be spaced apart from each other in a belt length direction;
- a cord embedded in the rubber strip portion of the toothed belt body so as to extend while forming a helical pattern having a pitch in a belt width direction;
- and
- a reinforcing fabric covering a surface of the toothed belt body where the toothed rubber portions are formed,
- wherein
- the cord is made of a twisted yarn including a band-like material, the band-like material including a filament bundle of high-strength glass fibers integrated together through a binder, the binder containing a rubber component, at least either a maleimide-based compound or a polyisocyanate compound, and a powdery inorganic filler,
- a surface of the reinforcing fabric facing opposite to the toothed belt body is coated, through a coating treatment if rubber cement, with a surface-coating rubber layer made of a rubber composition containing a rubber component including hydrogenated nitrile-butadiene rubber as a main part.
Dependencies are inferred from the claim text.