发明授权
US2909209A Apparatus for making helical electric resistance heating wire coils and provided with a rotary mandrel and a pressing roll having an elastically deformable coil embracing surface 失效
用于制造螺旋电阻加热线圈并设置有旋转心轴和具有可弹性变形的线圈包围表面的压辊的装置

  • 专利标题: Apparatus for making helical electric resistance heating wire coils and provided with a rotary mandrel and a pressing roll having an elastically deformable coil embracing surface
  • 专利标题(中): 用于制造螺旋电阻加热线圈并设置有旋转心轴和具有可弹性变形的线圈包围表面的压辊的装置
  • 申请号: US43179154
    申请日: 1954-05-24
  • 公开(公告)号: US2909209A
    公开(公告)日: 1959-10-20
  • 发明人: PATSY CICCONEWALTER WALLIN WILLIAM
  • 申请人: DRIVER HARRIS CO
  • 专利权人: Driver Harris Co
  • 当前专利权人: Driver Harris Co
  • 优先权: US43179154 1954-05-24
  • 主分类号: B21F3/04
  • IPC分类号: B21F3/04 H01K3/04
Apparatus for making helical electric resistance heating wire coils and provided with a rotary mandrel and a pressing roll having an elastically deformable coil embracing surface
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