发明名称 |
Vented membrane switch with contaminant scavenger |
摘要 |
A membrane switch, which is vented to equalize air pressures within and outside the switch, includes a scavenger material in the vent passage selected to react with airborne contaminants and prevent or substantially reduce their passage into the area of the switch contacts.
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申请公布号 |
US4365130(A) |
申请公布日期 |
1982.12.21 |
申请号 |
US19810334495 |
申请日期 |
1981.12.28 |
申请人 |
NORTH AMERICAN PHILIPS CORPORATION |
发明人 |
CHRISTENSEN, DAVID A. |
分类号 |
H01H13/702;(IPC1-7):H01H13/52;H01H9/02 |
主分类号 |
H01H13/702 |
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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