Power transmission belt
First Claim
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1. A power transmission belt comprising:
- a body with an inside and outside and laterally oppositely facing side surfaces,the body having at least one surface that engages a pulley comprising at least one surface to frictionally transmit forces between the power transmission belt and pulley,the body comprising rubber defining at least a part of the at least one surface that is a composition comprising a blend of;
a) 100 parts by weight of an ethylene/α
-olefin elastomer;
b) 10 to 25 parts by weight of a first plasticizer having a solubility parameter of from 8.3 to 10.7 (cal/cm3)1/2; and
c) 60 to 110 parts by weight of an inorganic filler comprising carbon black,wherein the carbon black has a nitrogen adsorption specific surface area of from 65 to 125 m2/g and dibutyl phthalate oil absorption of from 90 to 125 cm3/100 g,wherein a friction coefficient between the at least one surface of the power transmission belt and the at least one surface of the pulley for the at least one surface is from 0.3 to 0.6 and said inorganic filler and said first plasticizer promote bleeding of said first plasticizer.
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Abstract
A power transmission belt having a body with an inside, an outside, and laterally oppositely facing side surfaces. The body has at least one surface that engages a pulley to frictionally transmit forces between the power transmission belt and pulley. The body includes rubber defining at least a part of the at least one surface. The rubber is a composition made up of a blend of at least: a) 100 parts by weight of an ethylene/α-olefin elastomer; b) 10 to 25 parts by weight of a plasticizer having a solubility parameter of from 8.3 to 10.7 (cal/cm3)1/2; and c) 60 to 110 parts by weight of an inorganic filler.
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Citations
18 Claims
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1. A power transmission belt comprising:
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a body with an inside and outside and laterally oppositely facing side surfaces, the body having at least one surface that engages a pulley comprising at least one surface to frictionally transmit forces between the power transmission belt and pulley, the body comprising rubber defining at least a part of the at least one surface that is a composition comprising a blend of;
a) 100 parts by weight of an ethylene/α
-olefin elastomer;
b) 10 to 25 parts by weight of a first plasticizer having a solubility parameter of from 8.3 to 10.7 (cal/cm3)1/2; and
c) 60 to 110 parts by weight of an inorganic filler comprising carbon black,wherein the carbon black has a nitrogen adsorption specific surface area of from 65 to 125 m2/g and dibutyl phthalate oil absorption of from 90 to 125 cm3/100 g, wherein a friction coefficient between the at least one surface of the power transmission belt and the at least one surface of the pulley for the at least one surface is from 0.3 to 0.6 and said inorganic filler and said first plasticizer promote bleeding of said first plasticizer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification
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Current AssigneeMitsuboshi Belting Limited
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Original AssigneeMitsuboshi Belting Limited
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InventorsHineno, Yorifumi, Nishida, Syuhei, Kojima, Hiroyuki, Shimoo, Satoshi
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Primary Examiner(s)Siconolfi; Robert A
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Assistant Examiner(s)BOWES, STEPHEN M
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Application NumberUS11/510,878Publication NumberTime in Patent Office1,632 DaysField of Search474/236, 474/263, 524/297, 524/474, 524/495US Class Current474/263CPC Class CodesF16G 5/06 with reinforcement bonded b...F16G 5/20 with a contact surface of s...
