发明名称 |
Roof ventilator for smoke evacuation during fire - has pneumatic cylinder to move linkage opening ventilator |
摘要 |
<p>A roof ventilator for smoke evacuation during a fire comprises a flap (22) fitted at an angle and hinged along its lower edge to a mounting sleeve (10). It is held closed by an upper catch (80) forming one end of a linkage whose other end is attached to the rod (89) of a pneumatic cylinder (70) trunnion mounted (71) on a pivoted arm (40). This arm is held down by a spring loaded catch (62) opening when heat destroys a capsule. The arm is released and the hatch flies open, the pneumatic cylinder providing the force. The flap can be operated manually for normal ventilation purposes, a spring (88) assisting the operations.</p> |
申请公布号 |
NL7608057(A) |
申请公布日期 |
1978.01.24 |
申请号 |
NL19760008057 |
申请日期 |
1976.07.21 |
申请人 |
COLT INTERNATIONAL LIMITED TE HAVANT, GROOT-BRITTANNIE. |
发明人 |
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分类号 |
E05F1/00;E05F15/04;F24F7/02;(IPC1-7):05F1/00;24F7/02;62C3/14 |
主分类号 |
E05F1/00 |
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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