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US 2003/0116255 A1Published application
Power transmission belt and method
OwnerCraig Kopanginventor
Life of this patent
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Abstract
The invention comprises a belt having a plied construction overlying tensile cords. An elastomeric layer overlies an overcord which overlies yet another elastomeric layer which in turn overlies a tensile cord. The overcord layer supports the tensile cords during molding thereby stabilizing a cordline centerline position with respect to a rib apex. This construction significantly reduces a distance from a tensile cord centerline to a rib apex and rib/pulley interface in a multi-ribbed belt, thereby significantly increasing belt life.
Claims9
A method of building a belt comprising the steps of:
- building a belt build comprising the steps of;
- plying a first elastomeric layer on a build mandrel, the build mandrel having an expandable outer surface;
- plying a substantially non-porous cross-cord layer on the elastomeric layer;
- plying a second elastomeric layer on the cross-cord layer;
- spiraling a tensile member on the second elastomeric layer;
- and
- plying a third elastomeric layer on the tensile cord;
- pressurizing the expandable outer surface thereby pressing the belt build into a mold having a belt profile;
- supporting the tensile member with the cross-cord layer whereby a tensile cord position is controlled;
- applying a temperature to the belt build;
- curing the belt;
- and
- removing the belt build from the mold.
10 more elements
Dependencies are inferred from the claim text.