Power Transmission Belt and Method of Making Same
AssigneeThe Gates Corporation
InventorLambert Pasch
Life of this patent
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Abstract
A method of making a belt including the steps of: (a) helically wrapping a fabric strip of predetermined width on a mandrel at a first helix angle; (b) helically winding a tensile cord onto the mandrel over the fabric at a second helix angle less than the first helix angle; (c) wrapping a sheet or a strip of elastomer material around the mandrel over the tensile cord; and (d) curing the elastomer material under pressure to form a belt sleeve. The mandrel may be grooved for making toothed belts. The fabric strip may be preformed. A resulting toothed belt has a fabric seam spanning several teeth and having a helix angle. The seam may be joined.
Claims21
A toothed endless belt comprising:
- an elastomeric belt body with a plurality of teeth;
- and
- a helically wrapped fabric strip covering the surface of said teeth with adjacent edges of the fabric strip describing a helical seam;
- with said seam extending over more than two teeth.
A method of making a toothed endless belt comprising:
- (a) helically wrapping a fabric strip of predetermined width on a mandrel at a first helix angle without overlaps;
- (b) helically winding a tensile cord onto said mandrel over said fabric at a second helix angle;
- (c) wrapping a sheet of elastomer material around said mandrel over said tensile cord;
- and
- (d) curing said elastomer material.
A method of making a jacket for use in belt making comprising helically joining the adjacent edges of a helically wrapped fabric strip.
Dependencies are inferred from the claim text.