Patent ID: 7200932
Filing Date: 2007-04-10
Classification: B23K,F02F,F16J,Y10T

Abstract:
1. A method of manufacturing a gasket assembly including a plurality of steel gasket layers each having a predetermined electrical resistance and including at least one coating layer of a material having an electrical resistance substantially greater than that of the steel gasket layers and axially aligned apertures to be sealed, said method comprising the steps of: applying the at least one coating layer of the material to at least one surface of at least one of the plurality of gasket layers to provide at least one coated gasket layer; assembling the at least one coated gasket layer with at least one other gasket layer; and thereafter welding the assembled gasket layers together with a weld extending through said plurality of gasket layers and said at least one coating layer near said apertures to form the gasket assembly.