Claims
- 1. A method for manufacturing an endless power transmission belt having a round cross-section and a triangular core which comprises the steps of
- (a) providing a triangular core comprising a plurality of longitudinally extending load-carrying members embedded in a rubber compound;
- (b) wrapping said core with at least two layers of rubberized fabric; and
- (c) curing at least a portion of the length of the resulting wrapped core in a curing mold having a round cross-section.
- 2. The method of claim 1 wherein said providing step (a) comprises providing an equilateral triangular core.
- 3. The method of claim 1 wherein said providing step (a) comprises building up a core sleeve, at least partially curing said core sleeve, and cutting at least one triangular core from the resulting at least partially cured core sleeve.
- 4. The method of claim 3 wherein said core sleeve is built up by wrapping a plurality of layers of tire cord fabric having a rubber compound applied to at least one side thereof about a circular mandrel.
- 5. The method of claim 3 wherein said core sleeve is built up by wrapping a plurality of alternating layers of tire cord fabric and rubber about a circular mandrel.
- 6. The method of claim 3 wherein said core sleeve is built up by winding a plurality of layers of rubber-coated load-carrying cord about a circular mandrel.
- 7. The method of claim 3 wherein said core sleeve is built up by winding a plurality of layers of load-carrying cord with intervening layers of rubber therebetween about a circular mandrel.
Parent Case Info
This is a division, of application Ser. No. 929,608, filed July 31, 1978, now U.S. Pat. No. 4,215,589.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
929608 |
Jul 1978 |
|