发明名称 |
Railroad spring frog assembly |
摘要 |
An improved railroad trackwork spring wing frog assembly is provided with multiple rail-closer subassemblies, preferably of the nested and counter-wound compression spring-type, that co-operate with the assembly spring wing rail, and that are laterally spaced-apart with respect to each other along the angled rail portion of the frog assembly spring wing rail.
|
申请公布号 |
US5810298(A) |
申请公布日期 |
1998.09.22 |
申请号 |
US19970848803 |
申请日期 |
1997.05.01 |
申请人 |
ABC RAIL PRODUCTS CORPORATION |
发明人 |
YOUNG, KEITH;KUHN, STEPHEN R. |
分类号 |
E01B7/14;(IPC1-7):E01B7/14 |
主分类号 |
E01B7/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|