Oil-through type push rod
AssigneeUsui Kokusai Sangyo Kabushiki Kaisha
InventorsKazuo Suzuki, Iyoshi Watanabe, Teruhisa Takahashi
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Abstract
An oil-through type push rod for, for instance, internal combustion engines including a metal pipe and a metal end fitting which has an oil hole formed therein and is welded to the end of the metal pipe, the metal pipe being provided with a covering layer of a low-melting-point metal for fixing a welding spatter generated during welding, and such a low-melting-point metal covering layer being disposed on at least an inside wall surface of the metal pipe so as to be near an area where the metal end fitting is welded.
Claims6
An oil-through type push rod comprising a metal pipe and a metal end fitting which has an oil hole formed therein and is welded to said metal pipe, wherein
- said metal pipe is provided with a covering layer of a low-melting-point metal, and said covering layer, which is for fixing a welding spatter generated during welding, is disposed on at least an inside wall surface of said metal pipe so as to be near an area where said metal end fitting is welded.
An oil-through type push rod comprising a metal pipe and a metal end fitting which has an oil hole formed therein and is welded to said metal pipe, wherein
- said metal pipe is provided with a covering layer of a low-melting-point metal, and said covering layer, which is for fixing a welding spatter generated during welding, is disposed on at least an inside wall surface of said metal pipe so as to be near an area where said metal end fitting is welded;
- and
- said metal end fitting is provided with a covering layer of a low-melting-point metal, and said covering layer, which is for fixing a welding spatter generated during welding, is disposed on at least outer surface of a part of said metal end fitting, said part being inside said metal pipe and near an area where said metal end fitting is welded.
Dependencies are inferred from the claim text.