Conveyor for hot materials

Conveyors: power-driven – Conveyor section – Endless conveyor

Reexamination Certificate

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Details

C198S847000, C198S846000, C198S844200

Reexamination Certificate

active

07484618

ABSTRACT:
A conveyor belt having a longer effective operating life when continuously conveying hot materials of the order of from about 300° F. to about 330° F. and without the need for premature production line shutdowns for belt shortening and resplicing. The belt includes woven upper and lower cotton fiber layers and two intermediate layers of woven polyester fibers. The layers are held together in face-to-back relationship with rubber skim that is subsequently vulcanized. The upper and lower cotton layers are structured to provide heat insulation for the inner polyester fibers.

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patent: 3415700 (1968-12-01), Webster
patent: 3593840 (1971-07-01), Guyer
patent: 3900627 (1975-08-01), Angioletti et al.
patent: 4224370 (1980-09-01), Heinemann
patent: 4411947 (1983-10-01), Heynhold
patent: 4674622 (1987-06-01), Utsunomiya et al.
patent: 5840635 (1998-11-01), Bertotto
patent: 5938007 (1999-08-01), Fujihiro et al.
patent: 6837366 (2005-01-01), Nishikita
patent: 2004/0140180 (2004-07-01), Kerwel et al.

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