发明名称 |
Combined thermal and electrical cut-off device |
摘要 |
The device described herein is useful in applications which formerly required both a thermal cut-off device and an electrical fuse. This device will open an electrical circuit in response to either an increase in ambient temperature or an increase in electrical current. A bracket is provided to support a radial lead thermal cut-off device. The bracket is of a general C-shaped configuration and has an extending lead bar that is crimped into electrical engagement with an input lead, and one radial lead of the thermal cut-off device is crimped into electrical engagement with the second input lead. A helical conductive coil has one end welded or otherwise secured to the C-shaped bracket, and the second lead of the thermal cut-off device is crimped to the other end of the helical coil which is positioned over the thermal cut-off device so as to surround it. Thus, an ambient temperature rise may cause the thermal cut-off device to open the electrical circuit; or alternately the heat generated by the I2R loss in the coil due to excessive electrical current flow may cause the device to also open.
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申请公布号 |
US4227169(A) |
申请公布日期 |
1980.10.07 |
申请号 |
US19790037988 |
申请日期 |
1979.05.10 |
申请人 |
ILLINOIS TOOL WORKS INC. |
发明人 |
MCVEY, JOHN K.;SHARP, LARRY L. |
分类号 |
H01H37/76;H01H71/20;(IPC1-7):H01H85/02;H01H85/20 |
主分类号 |
H01H37/76 |
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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