Patent ID: 6715668
Filing Date: 2004-04-06
Classification: F17C

Abstract:
A liquefiable gas pressure cylinder comprising:a shell; and heads fusion welded at opposite ends of said shell, wherein side ends where said heads are joined to said shell are crimped radially inward to each end to form chimes, wherein the shell is a straight cylinder having a single longitudinal welded seam defining the cylinder body and opposite axial end portions; said heads are circular each having a domed center portion and a flanged periphery, said flanged periphery has a cylinder portion surrounding the domed center portion and a radially extending edge portion, an outer diameter of the cylinder portion being equal to an internal diameter of said shell so that when said heads are mounted into said shell with said domed center portion extending axially inwardly, said cylinder portion is press-fitted into said end portions of said shell.