| 摘要 |
PT--84200 A The laminated heat barrier for the inner wall (3) of a duct or container, partic. an i.c. engine exhaust manifold, comprises at least one plate-shaped element (1) and at least one heat insulating layer (2), which extend concentrically with the manifold centre line, with the layer consisting of air, gas, or another insulating material. - Each boundary of the air gap etc. is formed by an element (1), which has at least one side provided with prong-like spacer projections and is shaped to fit against the inner wall surface of the manifold to follow its, possibly three-dimensional, contour.
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