Dual-purpose drying and cooling apparatus

Drying and gas or vapor contact with solids – Process – Diverse types of drying operations

Reexamination Certificate

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Details

C034S124000, C034S425000, C034S426000

Reexamination Certificate

active

07805857

ABSTRACT:
A dual-purpose, cooling/drying apparatus comprising a rotatable cooling/drying cylinder wherein air, steam, and water supplied from sources external of the cooling/drying cylinder are selectively introducible into and removable from a space defined inside the cylinder. The apparatus includes a first flow path through which the water is selectively introducible into the cylinder space, and a second, separate flow path through which either of the air and steam are selectively introducible into the cylinder space. The apparatus is characterized by a cooling mode, in which the water and air are selectively introducible into the cylinder space through the first and second flow paths, respectively, and a drying mode, wherein the steam is selectively introducible into the cylinder space through the second flow path.

REFERENCES:
patent: 1564171 (1925-12-01), Brown
patent: 2879039 (1959-03-01), Skinner
patent: 4089121 (1978-05-01), Sawyer
patent: 5943788 (1999-08-01), Autio
patent: 6185836 (2001-02-01), Zaoralek

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