Invention Grant
US06216557B1 Push rod, and process for producing the same 失效
推杆及其制造方法

Push rod, and process for producing the same
Abstract:
A push rod includes a rod body and a steel ball bonded to at least one of end faces of the rod body by an electric resistance welding. The rod body 2 is formed from an aluminum alloy. Thus, it is possible to provide a push rod which is lightweight and which can be produced at an inexpensive cost.
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