发明名称 |
HEATING COIL |
摘要 |
A heating coil includes a pair of linear lead portions adapted to be connected to a power supply, and a ring-shaped or coil-shaped head portion having end portions connected to the lead portions respectively. A flow path through which a cooling medium flows is formed inside the lead portions and the head portion. An outer circumferential surface of the head portion has a circular or elliptical cross section and is configured to face a heating target portion of an inner circumferential surface of a work extending, the heating target portion extending in a circumferential direction of the work. Each of the lead portions has a straight side portion in a plane intersecting a longitudinal direction of the lead portions, the straight side portions of the lead portions being arranged in proximity to each other.
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申请公布号 |
US2013140299(A1) |
申请公布日期 |
2013.06.06 |
申请号 |
US201213705981 |
申请日期 |
2012.12.05 |
申请人 |
NETUREN CO., LTD.;NETUREN CO., LTD. |
发明人 |
KIYOSAWA YUTAKA;SUGIYAMA YUTAKA;OGAWA YASUHARU |
分类号 |
H05B6/36;C21D1/42;H05B6/42 |
主分类号 |
H05B6/36 |
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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