Drying and gas or vapor contact with solids – Apparatus – Vacuum
Patent
1978-08-28
1981-06-09
Makay, Albert J.
Drying and gas or vapor contact with solids
Apparatus
Vacuum
34112, 34123, F26B 1330
Patent
active
042716004
ABSTRACT:
The present invention relates to an apparatus for drying under vacuum flat articles of porous material which apparatus comprises a support surface for supporting at least one article to be dried, a heating means disposed on the side of the support surface opposite to the side supporting the flat articles, at least one cover means serving to enclose at least one article to be dried, which is spread on the corresponding portion of the support surface, in a hermetically-sealed space, and means enabling the connection of the hermetically-sealed space to a vacuum creating device. The cover means employed comprises a flexible but non-extensible, fluid tight diaphragm which is provided on the side facing the support surface with a cushion layer of porous material and on its periphery with a fluid-tight seal for coaction with the support surface to provide the hermetically-sealed space.
REFERENCES:
patent: 1762309 (1930-06-01), Roesen
patent: 3253351 (1966-05-01), Bettanin
Joyce Harold
Makay Albert J.
Patpan Inc.
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