US Patent 7508682 Housing for an electronic circuit

A housing for an electrical circuit having a metal base with an open top and a metal lid which overlies the open top of the base and forms an interior chamber adapted to contain an electronic circuit. The outer periphery of the lid is attached to the base by friction stir welding to thereby form a hermetically sealed chamber dimensioned to contain an electronic circuit. An electronic port is electrically connected to the electronic circuit and accessible exteriorly of the housing.