发明名称 Field free heating cable
摘要 <p>The cable has protective sheath (4) surrounding its core, which comprises a central resistance conductor (1) surrounded by an insulation sheath (2). A return conductor (5) is connected to the resistance conductor at one end of the cable. The return conductor comprises separate conductors (5a,5b,5c) distributed in the core. They are imbedded in a common insulation sheath (3) over the resistance conductor sheath (2).</p>
申请公布号 EP0858244(A2) 申请公布日期 1998.08.12
申请号 EP19970120263 申请日期 1997.11.19
申请人 ALCATEL 发明人 BIRKELAND, TOM HARALD;ASPER, KARE;SOMMERFELT, KRISTIN FAGERHAUG
分类号 H05B3/56;(IPC1-7):H05B3/56 主分类号 H05B3/56
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