发明名称 |
IONISATION DETECTOR CHAMBER |
摘要 |
<p>A smoke detector having an ionisation chamber with a central electrode which is covered by an insulator except at a restricted area closely spaced from a measuring electrode. A second electrode consisting of a perforated wall of the ionisation chamber. A conducting sleeve which is electrically connected to the second electrode surrounds the insulator on the first electrode, to minimize the effect of condensation of water on the first electrode.</p> |
申请公布号 |
CA1143871(A) |
申请公布日期 |
1983.03.29 |
申请号 |
CA19790325291 |
申请日期 |
1979.04.11 |
申请人 |
CHLORIDE GROUP LIMITED |
发明人 |
JOHNSON, DENNIS;LETTS, JOHN B. |
分类号 |
G08B17/113;H01J41/08;(IPC1-7):H01J47/02;G08B17/10 |
主分类号 |
G08B17/113 |
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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