Method of making a toothed drive belt with an abrasion resistant urethane coating on the transmission surface

Abstract

Abstract A TOOTHED BELT TO BE USED IN A POSITIVE TRANSMISSION DRIVE, AND A METHOD FOR MANUFACTURING THE SAID BELT. ACCORDING TO THE METHOD, A GROOVED MANDREL IS COATED WITH A SKIN COATING OF A WEAR AND ABRASION RESISTANT ELASTOMERIC MATERIAL. A HIGHLY VISCOUS TOOTH FILLER COMPOUND, WHICH IS ALSO AN ELASTOMERIC MATERIAL, IS THEN APPLIED FILLING THE GROOVES OF THE MANDREL AND COVERING THE ENTIRE SURFACE OF THE SKIN COATING FORMING THE MAJOR PORTION OF THE BELT TEETH. EITHER BEFORE OR AFTER THE FILLING OF THE GROOVES WITH THE FILLER COMPOUND, AND BEFORE THE CURING OF THE FILLER COMPOUND, A REINFORCING FILAMENT IS HELICALLY WOUND AROUND THE MANDREL AND AT LEAST PARTIALLY EMBEDDED WITHIN THE FILLER COMPOUND. THEREAFTER THE MANDREL AND SAID COATINGS ARE PLACED IN AN OVEN AND CURED. THE CURED BELT CAN THEN BE STRIPPED FROM THE MANDREL AND MAY BE CUT INTO INDIVIDUAL BELTS OF SMALLER WIDTH IF DESIRED. THE BELT RESULTING FROM THIS METHOD WILL HAVE A WEAR AND ABRASION RESISTANT ELASTOMERIC COATING WHICH COVERS A LESS WEAR RESISTANT ELASTOMERIC LAYER. THE REINFORCING FILAMENT IS SEPARATED FROM THE TEETH OF THE GEARS WHICH COACT WITH THE BELT BY THE WEAR AND ABRASION RESISANT COATING.

Inventors

• 👤 Gerald L Barnes
• 👤 Raymond G Cichy
• 👤 Gerald E Adams

Bibliographic Details