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US 10,309,487 B2Granted
Friction transmission belt
AssigneeBando Chemical Industries, Ltd.
InventorsTakayuki Okubo, Shinji Takahashi, Hideaki Kawahara
Life of this patent
Estimating the term…
Abstract
In a friction transmission belt including a rubber layer forming a pulley contact surface, the rubber layer includes a rubber composition containing polyolefin particles and an inorganic filler. In the rubber composition, a total content of the polyolefin particles and the inorganic filler with respect to 100 parts by mass of a rubber component is 85 parts by mass or more.
Claims10
A friction transmission belt comprising a rubber layer forming a pulley contact surface, wherein
- the rubber layer includes a rubber composition containing polyolefin particles, and an inorganic filler,
- the inorganic filler includes at least silica not receiving coupling treatment,
- in the rubber composition, a content of the polyolefin particles with respect to 100 parts by mass of a rubber component is 50 parts by mass or more and 100 parts by mass or less,
- in the rubber composition, a content of the inorganic filler with respect to 100 parts by mass of a rubber component is 35 parts by mass or more and 85 parts by mass or less, and
- an aspect ratio obtained by dividing maximum outer diameters of the polyolefin particles by minimum outer diameters the polyolefin particles is 2.00 or smaller.
2 more elements
Dependencies are inferred from the claim text.