Power transmission belt
AssigneeBando Chemical Industries, Ltd.
InventorsSusumu Onoe, Mutsuyuki Yamaguchi
Life of this patent
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Abstract
A power transmission belt having a load carrier in which a twisted cord of synthetic fiber such as polyester fiber or of inorganic fiber such as glass fiber is embedded. Said load carrier is made by final twisting a plurality of twisted yarn (one or plural single yarns first twisted) in the direction contrary to the first twisting direction. The first twisting angle should be in the range between 87.degree. and 93.degree. and the final twist multiplier should preferably be in the range between 400 and 1,600.
Claims14
A power transmission belt having a load carrier twisted cord embedded therein said load carrier twisted cord having a plurality of yarns selected from the group consisting of synthetic fiber yarns and inorganic fiber yarns and twisted together to form said load carrier twisted cord, said plurality of yarns, before final twist into said load carrier twisted cord, having each been first twisted, in the direction opposite to said final twist of said load carrier twisted cord, so that a first twist angle at which each yarn of said plurality of yarns crosses with a surface at right angle to the axial line of said load carrier twisted cord is between 87.degree. to 93.degree..
A power transmission belt having a load carrier twisted cord embedded therein said load carrier twisted cord having a plurality of yarns selected from the group consisting of synthetic fiber yarns and inorganic fiber yarns and twisted together to form said load carrier twisted cord, said plurality of yarns, before final twist into said load carrier twisted cord, having each been first twisted, in the direction opposite to said final twist of said load carrier twisted cord, so that a first twist angle at which each yarn of said plurality of yarns crosses with a surface at right angle to the axial line of said load carrier twisted cord having a final twist multiplier between 400 and 1,600 as calculated by multiplying the number of final twists in said load carrier twisted cord by the square root of the denier of said load carrier twisted cord.
Dependencies are inferred from the claim text.