Dual sided poly-V drive belt and pulley therefor
AssigneeThe Goodyear Tire & Rubber Company
InventorsMichel Leroy Janne, Steven Mark Anderson
Life of this patent
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Abstract
This invention relates to dual-sided multi-ribbed power transmission belts having a plurality of longitudinally extending, transversely spaced alternating ribs and grooves with the ribs having a distance between their midpoints of a pitch P on both sides of the belt. The grooves on opposite sides of the belt are transversely offset from each by a distance of P/2.
Claims12
A dual-sided, multi-ribbed power transmission belt comprising a primary side having a plurality of longitudinally extending, transversely spaced alternating ribs and grooves, the ribs having a distance between their midpoints of pitch P;
- a secondary side having a plurality of longitudinally extending, transversely spaced alternating inner ribs and grooves, said inner ribs having a distance between their midpoints of a pitch P;
- a layer of longitudinally disposed tension members between the primary side and the secondary side;
- wherein the grooves on the secondary side are transversely offset across the tension member layer from the grooves on the primary side by a distance of P/2.
A pulley having an outer peripheral ribbed surface comprising a plurality of circumferentially disposed and axially alternating inner projections and land areas and a pair of outer surfaces, wherein the distance between the peaks of the inner projections is equal to a pitch P and the distance between the outermost inner projections and the outer surfaces is 1.5 P.
A pulley having an outer peripheral ribbed surface comprising a plurality of circumferentially disposed and axially alternating inner projections and land areas and a pair of outer surfaces, wherein the distance between the peaks of the inner projections is equal to a pitch P and the distance between the outermost inner projections and the outer surfaces is P/2.
A combination of a dual-sided multi-ribbed belt and a secondary side pulley comprising a belt having a primary side, a secondary side and a layer of longitudinally disposed tension members therebetween;
- wherein the primary side has a plurality of longitudinally extending, transversely spaced alternating ribs and grooves, the ribs having a width between the grooves equal to a pitch P;
- wherein the secondary side has a plurality of longitudinally extending, transversely spaced, alternating inner ribs and grooves, said inner ribs having a width between their midpoints equal to a pitch P;
- and a pair of outer ribs having widths of 1.5 P;
- wherein the grooves on the secondary side are transversely offset across the tension member layer from the grooves on the primary side by a distance P/2;
- the secondary side pulley having an outer peripheral ribbed surface comprising a plurality of circumferentially disposed and axially alternating inner projections and land areas and a pair of outer surfaces, wherein the distance between the peaks of the inner projections is equal to a pitch P and the distance between the outermost inner projections and the outer surfaces is 1.5 P.
A combination of a dual-sided multi-ribbed belt and a secondary side pulley comprising a belt having a primary side, a secondary side and a layer of longitudinally disposed tension members therebetween;
- wherein the primary side has a plurality of longitudinally extending, transversely spaced alternating ribs and grooves, the ribs having a width between the grooves equal to a pitch P;
- wherein the secondary side has a plurality of longitudinally extending, transversely spaced, alternating inner ribs and grooves, said inner ribs having a width between their midpoints equal to a pitch P;
- and a pair of outer ribs having widths of P/2;
- wherein the grooves on the secondary side are transversely offset across the tension member layer from the grooves on the primary side by a distance P/2;
- the secondary side pulley having an outer peripheral ribbed surface comprising a plurality of circumferentially disposed and axially alternating inner projections and land areas and a pair of outer surfaces, wherein the distance between the peaks of the inner projections is equal to a pitch P and the distance between the outermost inner projections and the outer surfaces is P/2.
Dependencies are inferred from the claim text.