Sound absorbing heat shield with perforate support layer
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United States of America Patent
Stats
-
Mar 23, 1993
Grant Date -
N/A
app pub date -
Jan 10, 1991
filing date -
Jan 22, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heat shield (1) includes a support layer (2) that is perforate only in predetermined partial areas (6, 7, 8) and comprises an insulation layer (3) that has a protective coating (4, 5) on both sides thereof. In particular, flange areas (6), attachment areas (8), and areas of bent or angular deformities (7) are free of perforations. A protective coating (5) on a side of the insulation layer facing the support layer has a thickness of less than 30 .mu.m and can be constructed of a thin aluminum foil or a sprayed or deposited metalized coating. Preferably, the protective coating has fine pores.
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Cited Art Landscape
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