Method of making a metal bottle for exotic gases under pressure

Details Method of making a metal bottle for exotic gases under pressure Method of making a metal bottle for exotic gases under pressure

1983-01-21

1985-01-15

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

29422, 72341, 72342, 72367, B21D 2200

Patent

active

044932014

ABSTRACT:
A strong, seamless one-piece metal bottle of substantially uniform wall thickness for containing and dispensing gas under pressure is produced from a flat metal piece by a series of deep-drawing operations to provide an elongated cylindrical shell having an open end mouth and a slight flange thereabout. A dimple is formed in its bottom end wall. The flange and an adjacent cylindrical open end mouth portion of the shell is then severed from the main body, and the wall thickness of the new open end mouth portion is tapered from the cylindrical side wall of the shell towards its mouth edge. Thereafter, the tapered open mouth end portion is turned or swaged inwardly into a somewhat blunt, rounded-in nose portion of a substantially uniform thickness that substantially corresponds in the thickness to the side and bottom walls of the formed metal bottle and that has an open end of reduced size suitable for mounting a nipple, ferrule or valve fitting therein.

REFERENCES:
patent: 1059212 (1913-04-01), Ross
patent: 1737539 (1929-11-01), Petry
patent: 1966713 (1934-07-01), Flint
patent: 2309181 (1943-07-01), Franck
patent: 2405201 (1946-08-01), Franck
patent: 2659128 (1953-11-01), Baldwin
patent: 3191421 (1965-06-01), Coen
patent: 3651559 (1972-03-01), Lawlor
patent: 3913372 (1974-10-01), Baker
patent: 4173883 (1979-11-01), Boik
patent: 4423616 (1984-01-01), Pease

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