Method for forming a conduit extending through and beyond opposite sides of a housing wall
AssigneeRWC, Inc.
InventorRobert H. Blair
Life of this patent
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Abstract
A method for forming a conduit or flow passage extending through and beyond opposite sides of a housing wall. A pair of tubes constituting the external portions of the conduit have radially projecting peripheral flanges formed at their ends. The flanges are placed in face-to-face engagement with flat surfaces on opposite sides of the wall in coaxial alignment with a bore through the wall. The flanges are then pressed against the wall by tubular welding electrodes connected in series in a welding circuit and are simultaneously welded to the wall.
Claims4
The method of forming a conduit extending through and beyond opposite sides of a housing wall comprising the steps of forming a bore of the desired internal diameter of said conduit through the housing wall, forming a radially outwardly projecting peripheral flange at one end of each of a pair of tubes having the desired internal diameter of said conduit, placing the flanges of said tubes in face-to-face engagement with said wall at opposite sides thereof with said tubes in coaxial alignment with said bore, electrically connecting said flanges in series with each other to a source of welding current, and simultaneously welding said flanges to said wall.
Dependencies are inferred from the claim text.