초록 ▼

An endless elastomeric or rubber drive belt includes a body having a mid-circumferential plane and first, second and third ply portions of reinforcement therein. The first ply portion has first cable means oriented substantially parallel to the mid-circumferential plane for carrying tensile loads an

An endless elastomeric or rubber drive belt includes a body having a mid-circumferential plane and first, second and third ply portions of reinforcement therein. The first ply portion has first cable means oriented substantially parallel to the mid-circumferential plane for carrying tensile loads and defining a second plane contiguous therewith. The second ply portion has second cable means arranged on a positive bias angle and the third ply portion has third cable means arranged on a negative bias angle to the mid-circumferential plane. The second and third ply portions are juxtaposed and constructed differently so as to substantially neutralize the shear stresses in each generated from tensile loading while bending by apportioning their strain levels in approximate proportion to their distances from the second plane.

대표청구항 ▼

An endless elastomeric drive belt comprising: an endless body having an interior surface and a longitudinal first plane therethrough; a first ply portion in the body having first cable means for sustaining tension loads and including at least one relatively inextensible cable oriented in substantial

An endless elastomeric drive belt comprising: an endless body having an interior surface and a longitudinal first plane therethrough; a first ply portion in the body having first cable means for sustaining tension loads and including at least one relatively inextensible cable oriented in substantially parallel relation to the first plane, the first cable means defining a second plane substantially contiguous therewith parallel to the interior surface; a second ply portion in the body having second cable means for increasing the longitudinal, transverse and oblique stiffness of the drive belt and including a plurality of second cables arranged at a positive bias angle to the first plane and defining in use a first shear stress and first strain level; and a third ply portion in the body having third cable means for increasing the longitudinal, transverse and oblique stiffness of the drive belt and including a plurality of third cables arranged at a negative bias angle to the first plane and defining in use a second shear stress and second strain level, the second and third ply portions being differently constructed so as to substantially neutralize the first and second shear stresses generated from tensile loading of the belt while bending by apportioning the first and second strain levels in approximate proportion to the distance of the second and third cable means from the second plane.