发明名称 |
Switch cover plate providing automatic emergency lighting |
摘要 |
A wall switch cover plate conceals an electrical circuit capable of sensing the field provided by the covered switch circuit. When power is lost at the switch circuit the electrical circuit senses the loss of power and activates one or more LEDs to provide emergency illumination. The electrical circuit is self contained and does not require stand-by energy so that the batteries are long lasting.
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申请公布号 |
US5833350(A) |
申请公布日期 |
1998.11.10 |
申请号 |
US19970846041 |
申请日期 |
1997.04.25 |
申请人 |
ELECTRO STATIC SOLUTIONS, LLC |
发明人 |
MORELAND, GREGORY B. |
分类号 |
H01H9/18;(IPC1-7):F21V33/00 |
主分类号 |
H01H9/18 |
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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