发明授权
- 专利标题： Conduct pipe covered with electrically insulating material
- 专利标题（中）： 导电管覆盖电绝缘材料
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申请号： US591249申请日： 1984-03-21
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公开(公告)号： US4785852A公开(公告)日： 1988-11-22
- 发明人: Kazuo Okahashi , Ichiro Takahashi
- 申请人： Kazuo Okahashi , Ichiro Takahashi
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人： Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX56-162246 19811012
- 主分类号： E21B43/24
- IPC分类号： E21B43/24 ; E21B17/00 ; E21B36/04 ; E21C41/24 ; F16L9/147 ; F16L25/01 ; H01B17/60 ; H01B17/62 ; F16L9/02
摘要：
A conduct pipe covered with an electrical insulating material, which is obtained by a process comprising winding a polyether ether ketone resin film around the outside of a metal conduct pipe, carrying out impregnation treatment in vacuum under pressure with using an impregnant resin comprising an ether bonding epoxy resin, and thereafter hardening by heating, is disclosed. The conduct pipe is particularly useful in an electrode apparatus for collecting underground hydrocarbon resources by an electrically heating method.
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