发明名称 |
Circuit for an emergency lighting and fire detector system |
摘要 |
A circuit for a home safety unit having an emergency light system for providing light in the event of a power failure or when a fire is detected, and a fire detection system for providing an audible alarm indicating the existence of a fire. The circuit includes a battery which is constantly being charged and a low voltage responsive system for indicating a low voltage condition on the battery. A latching system causes the emergency light to be turned off when this low voltage condition is reached, and to remain off until the battery is recharged.
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申请公布号 |
US4199754(A) |
申请公布日期 |
1980.04.22 |
申请号 |
US19770853468 |
申请日期 |
1977.11.21 |
申请人 |
ESB INC |
发明人 |
JOHNSON, ROBERT W;RADDI, WILLIAM J |
分类号 |
G08B29/18;H02J9/02;(IPC1-7):G08B17/00;G08B7/00 |
主分类号 |
G08B29/18 |
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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