Method of manufacturing multiribbed belts

Details Method of manufacturing multiribbed belts Method of manufacturing multiribbed belts

1989-01-23

1990-06-05

Simmons, David

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156139, 156140, 156142, 156245, 156268, 474263, B29H 722

Patent

active

049311182

ABSTRACT:
A multiribbed power transmission belt and method of manufacturing the same, wherein an unvulcanized belt preform is provided with transversely extending staple fibers in the compression section thereof. The compression section is caused to be vulcanized while being urged against a mold having projections forming shallow grooves in the inner surface thereof. The grooves have a depth in the range of approximately 20% to 50% of the height of the ribs intended to be formed in the final power transmission belt. The ribs are formed in the belt by removing material from the compression section of the vulcanized preform, such as by the conventional machining operations of grinding, cutting, etc. The angular deflection of the reinforcing fibers in the compression section is caused to be no more than approximately 25% to provide the improved belt construction.

REFERENCES:
patent: 3839116 (1974-10-01), Thomas et al.
patent: 4106966 (1978-08-01), Brooks
patent: 4177688 (1979-12-01), Howerton et al.
patent: 4231826 (1980-11-01), Wrast et al.

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