초록 ▼

The apparatus utilizes a mandrel in a substantially ring or cylindrical shape about which is disposed inwardly pressure supplying means, an annular cavity disposed between the mandrel and pressure means, and means for supplying heat to the mandrel to initiate its thermal growth during curing of the

The apparatus utilizes a mandrel in a substantially ring or cylindrical shape about which is disposed inwardly pressure supplying means, an annular cavity disposed between the mandrel and pressure means, and means for supplying heat to the mandrel to initiate its thermal growth during curing of the belting. The metal of the mandrel has a high coefficient of thermal expansion which during use applies radial outward pressure against the belt body being cured.

대표청구항 ▼

Apparatus for curing an endless power transmission belt having at least one stable length tensile member embedded in a belt body, comprising: an inwardly disposed metal mandrel having an outer circumferentially continuous mold surface of cylindrical shape, said metal having a coefficient of thermal

Apparatus for curing an endless power transmission belt having at least one stable length tensile member embedded in a belt body, comprising: an inwardly disposed metal mandrel having an outer circumferentially continuous mold surface of cylindrical shape, said metal having a coefficient of thermal expansion of at least about 10×10-6 per °F.; means disposed outwardly of the mandrel for supplying pressure in a direction toward the mandrel; said mandrel and pressure supplying means defining an annular cavity adapted to receive the belt body to be cured, the outer mold surface of the mandrel having an outside diameter at ambient, below curing temperature, that is slightly less than the inside diameter of the belt body to be cured; and means for supplying heat to the mandrel to cause the mandrel to expand outwardly to fully engage and press againt the belt body placing the stable length tensile member under tension during curing of the belt body.