发明名称 |
MANIPULATIONSSICHERUNG EINES BRANDMELDERS |
摘要 |
The method involves connecting a light exit window (AF) and a light entry window of a cover plate (AP) with a light conducting unit (LL) such that light from a light source of one of two sensor units (SE1, SE2) of a fire alarm (BM) is received with a photo receiver of another sensor unit of the alarm. The light conducting unit is coated with a light reflecting material, and the cover plate is made up of plastic, metal and/or wood. The alarm is fixed on a cover of a constructionally limited space. An independent claim is also included for a fire alarm for differentiating fire from a manipulation of the fire alarm. |
申请公布号 |
AT397261(T) |
申请公布日期 |
2008.06.15 |
申请号 |
AT20050110342T |
申请日期 |
2005.11.04 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
MUELLER, KURT;STEINER, PETER |
分类号 |
G08B17/107;G08B29/04 |
主分类号 |
G08B17/107 |
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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