Fabric positioning apparatus used in producing synchronous belt

Details Fabric positioning apparatus used in producing synchronous belt Fabric positioning apparatus used in producing synchronous belt

1997-03-14

1999-03-16

Maki, Steven D.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With stretching or tensioning means

156138, 242147R, 242156, B29D 2908, B65H 7700

Patent

active

058824731

ABSTRACT:
One end of a flexible positioning cord is fixed on one end side of a molding drum and the positioning cord is then pulled from the other end side thereby applying a tension to the positioning cord. The tensed positioning cord presses a joint of an extensible fabric into one of tooth part forming grooves to position it therein. Next, a tension member cord is wound in a spiral form and the tension applied to the positioning cord is then relieved to allow the removal of the positioning cord from the tooth part forming groove. Thereafter, an unvulcanized rubber sheet is wrapped around the extensible fabric wound with the tension member cord, and the resultant substance is then subjected to cure through the application of pressure thereby forming a cylindrical slab. The slab is cut into round pieces at specific widths thereby obtaining synchronous belts. In this manner, there is obtained the synchronous belt in which the joint of the extensible fabric is positioned in the tooth part forming groove of the molding drum so as to avoid movement and is correctly located on a tooth tip end of a tooth part.

REFERENCES:
patent: 471571 (1892-03-01), Robinson
patent: 756751 (1904-04-01), Wallace
patent: 2385479 (1945-09-01), Underhill
patent: 3108028 (1963-10-01), Sprunck et al.
patent: 4053547 (1977-10-01), Redmond
patent: 4952261 (1990-08-01), Nosaka et al.
patent: 4992123 (1991-02-01), Cave et al.
patent: 4993995 (1991-02-01), Okazaki
patent: 5653095 (1997-08-01), Stamm

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