发明授权
- 专利标题: Stud, arc shield and rail clip for securing railroad rails
- 专利标题(中): 用于固定铁路轨道的螺柱,弧形护罩和导轨夹
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申请号: US747984申请日: 1985-06-24
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公开(公告)号: US4778106A公开(公告)日: 1988-10-18
- 发明人: Leslie J. Diener , William F. Langman , George P. Dunn , Albert E. Rex
- 申请人: Leslie J. Diener , William F. Langman , George P. Dunn , Albert E. Rex
- 申请人地址: OR Portland
- 专利权人: Omark Industries, Inc.
- 当前专利权人: Omark Industries, Inc.
- 当前专利权人地址: OR Portland
- 优先权: AUXPD4586 19780602
- 主分类号: E01B9/30
- IPC分类号: E01B9/30 ; E01B9/34 ; E01B9/48 ; E01B29/24
摘要:
Welding methods and articles are disclosed for securing railroad rails to supporting surfaces including a retaining stud, an arc shield for use in welding the retaining stud, a rail clip for securing the rail and tools for installing and removing the clip. The retaining stud is a T-shaped stud with a rectangular stem and head, the under surface of which forms an arcuate reaction surface. The stud is welded by the arc stud welding technique in which the method of controlled time and current controls the ultimate weld height and angulation of the stud. The welding is in conjunction with an arc shield, the face of which is complementary to the surface being welded and which includes a weld fillet cavity configured to provide constant weld fillet volume. The rail clip is generally U-shaped with a straight backed heel. In a preferred embodiment, the upper and lower limbs overlie one another and are bifurcated and straddle and cooperate with the stem of the stud. The upper toes include depressions which engage the head of the stud. The outer extremities of the lower toes are reaction surfaces which engage the rail and include upward deflections which engage the arcuate depressions upon deflection to provide a spring rate change.
公开/授权文献
- US5646943A Method for integrated congestion control in networks 公开/授权日:1997-07-08