发明名称 |
LJUDDEMPAD VENTILATIONSKANAL |
摘要 |
In buildings with a wall construction that contains heat insulation with good sound absorbing properties, muffling grommets for ventilation purposes can be made with eh help of a single-walled drum that passes through an opening in the heat insulation of the wall construction and there presents perforations for acoustic connection between the drum interior and the heat insulation.<IMAGE> |
申请公布号 |
SE8106595(L) |
申请公布日期 |
1983.05.07 |
申请号 |
SE19810006595 |
申请日期 |
1981.11.06 |
申请人 |
INGEMANSSONS INGENJORSBYRA AB |
发明人 |
BENJEGARD S-O;GUSTAFSSON J-I |
分类号 |
E04B1/82;E04F17/04;(IPC1-7):E04B1/82 |
主分类号 |
E04B1/82 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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