发明授权
US5303884A Interchangeable insert for railroad switches 失效
铁路开关可更换插件

Interchangeable insert for railroad switches
摘要:
The invention relates to a manganese steel insert to a railroad track switch point of the type designed to have a planar coupling system within both the web of the rail and the switch point of the insert, instead of the conventional curved coupling surface in use at the present. This is achieved by means of an attachment of the same material as the insert (or other steel) on the insert contact surfaces, thus achieving precision plane surfaces during the machining phase.
公开/授权文献
信息查询
0/0