发明名称 |
Mineral insulated parallel-type heating cables |
摘要 |
A mineral-insulated parallel type heating cable has at least two copper or other high conductivity busbars and a plurality of separate heating elements each confined to a zone of the cable that is short compared with its total length (e.g. around 21/2 to 5 ft). Each of the heating elements is made up of a plurality of sections of metallic high resistance material which extend longitudinally (physically parallel) and connected electrically in series, while the element as a whole is connected across the two busbars. The preform for making the cable is preferably assembled by a technique using insulating material in preformed blocks.
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申请公布号 |
US4739155(A) |
申请公布日期 |
1988.04.19 |
申请号 |
US19860946761 |
申请日期 |
1986.12.29 |
申请人 |
PYROTENAX OF CANADA LTD. |
发明人 |
RODGERS, ROBERT J.;TYMOWSKI, GEORGE J.;KOSASIH, UDIN |
分类号 |
H05B3/56;(IPC1-7):H05B3/06;H05B3/02 |
主分类号 |
H05B3/56 |
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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