Process of molding a reinforced flexible belt

Details Process of molding a reinforced flexible belt Process of molding a reinforced flexible belt

1975-04-17

1976-12-28

Kucia, Richard R.

Plastic and nonmetallic article shaping or treating: processes

Prestressing solid body and uniting in stressed condition

264231, 264275, B29D 2902

Patent

active

040002403

ABSTRACT:
A non-stretchable reinforcing cord is wound in a helical groove in a collapsible, cylindrical metal mandrel, and the cord is then tensioned and attached to the mandrel. The mandrel, with cord is placed in an outer mold element having a complementary cylindrical mold cavity, and a curable elastomer is injection molded into the mold space between the mandrel and cavity to mold an endless belt therebetween, and to fill the helical groove and transverse slots in the mandrel so as to form spaced parallel lugs along the inner surface of the belt, in which adjacent portions of the reinforcing cord are completely embedded, the cord being partially exposed in the spaces between lugs. The elastomer is then cured, and the mandrel collapsed to permit removal of the molded belt.

REFERENCES:
patent: 3062940 (1962-11-01), Bauer
patent: 3482004 (1969-12-01), Anderson
patent: 3742848 (1973-07-01), Huntoon
patent: 3813197 (1974-05-01), Ray

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