发明名称 |
Safety interlock for overhead projector |
摘要 |
A safety interlock for an overhead projector utilizes only one electrical switch to provide the functions of both a conventional power switch and a safety interlock switch. In an operational mode, the switch responds to a cam surface for actuation. In a safety interlock mode, the switch is allowed to rotate in response to forces generated by the cam surface rather than being actuated.
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申请公布号 |
US5410112(A) |
申请公布日期 |
1995.04.25 |
申请号 |
US19940193269 |
申请日期 |
1994.02.08 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
FREEMAN, DAVID S. |
分类号 |
H01H9/22;(IPC1-7):H01H9/22 |
主分类号 |
H01H9/22 |
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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