Patent ID: 6308675
Filing Date: 2001-10-30
Classification: B23K,F01L,Y10T

Abstract:
A gas exchange valve for an internal combustion engine, comprising:a valve stem having a valve base at one end; anda valve disk disposed on another end of said valve stem,wherein the valve stem and at least one of the valve base and valve disk have an approximately cylindrical, oblong hollow space with an approximately circular cross section, said space being formed by said valve stem and said at least one of said valve base and valve disk and having an opening with a cross section the same as the cross section of said hollow space, said opening to be closed on said at least one of said valve base and valve disk, wherein said opening is closed by material forming as a collar around the opening on said at least one of said valve disk and valve base, and wherein the only process for closing said opening consists of remelting the collar forming material so that it flows into and seals said opening.