发明授权
US4350291A Railway rail-fastening clip and a railway rail-and-fastening assembly 失效
铁路轨道固定夹和铁路轨道和紧固组件

  • 专利标题: Railway rail-fastening clip and a railway rail-and-fastening assembly
  • 专利标题(中): 铁路轨道固定夹和铁路轨道和紧固组件
  • 申请号: US120922
    申请日: 1980-02-12
  • 公开(公告)号: US4350291A
    公开(公告)日: 1982-09-21
  • 发明人: George D. Dobson
  • 申请人: George D. Dobson
  • 申请人地址: GB2 London
  • 专利权人: Pandrol Limited
  • 当前专利权人: Pandrol Limited
  • 当前专利权人地址: GB2 London
  • 优先权: GBX7905443 19790215
  • 主分类号: E01B9/48
  • IPC分类号: E01B9/48
Railway rail-fastening clip and a railway rail-and-fastening assembly
摘要:
A metal plate stands on a cross tie above an opening in the tie and a rail clip has a substantially straight leg which is driven into the opening, bears upwardly and is at most 2 mm. below a flat bottom of the plate. Second and third parts of the clip bear downwardly on the upper face of the rail flange and the upper face of the plate, respectively. This assembly may be made from an existing assembly in which a spike had its head overlying the rail flange and holding the rail down, the making of the new assembly including the step of forming the opening in the tie without moving the plate. A rail clip especially suitable for use in the assembly is made by bending a metal rod to a shape in which, when the substantially straight leg is horizontal and the lowest points on the second and third parts lie in a horizontal plane, a vertical plane, parallel to a vertical plane containing the axis of the leg, intersects both the leg and the third part, and the minimum spacing between the third part and the leg is 1/2 to 2 times the rod thickness.
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