E - Fixed Constructions – 04 – H
Patent
E - Fixed Constructions
04
H
20/103
E04H 12/28 (2006.01) E04F 17/02 (2006.01)
Patent
CA 1154228
LINING SYSTEM FOR CHIMNEYS AND DUCTS ABSTRACT OF THE DISCLOSURE There is provided a method of constructing a chimney or duct, which comprises an external structural wall, a protective layer of moving air adjacent to and in- wardly therefrom, and curved ring devices situated in the gas stream which by their shape control the gas flow and prevent the breakdown of the layer of protective air.
411891
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