发明名称 |
Ventilator roof cover and attachment - has flexible flange between cowling and roof and external cylindrical additional cover |
摘要 |
<p>The ventilator roof cover is made of concrete or a ceramic with an opening which may be coupled with a louvred air inlet or flexible pipe (6). Around the outer periphery of the ventilator housing is a fringe which contacts the roof at an acute angle and is of non-rigid construction (3). To protect the ventilator from entry of foreign bodies, a flexible outer member (7,8) is provided in the form of a castellated cylinder with a central opening including circular arcs. A straight bar may be fitted underneath the internal flanges of the flexible cover to allow it to be removed. The design enables the ventilator to be fitted to a sloping roof if required.</p> |
申请公布号 |
NL7513189(A) |
申请公布日期 |
1977.05.13 |
申请号 |
NL19750013189 |
申请日期 |
1975.11.11 |
申请人 |
REDLAND-BRAAS-BREDERO EUROPA (R.B.B.) B.V. TE UTRECHT. |
发明人 |
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分类号 |
E04D1/30;(IPC1-7):04D1/30 |
主分类号 |
E04D1/30 |
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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