B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
113/6
B21D 51/16 (2006.01) B21D 51/24 (2006.01) B21D 51/26 (2006.01)
Patent
CA 1212587
Astract of the Disclosure A strong, seamless one-piece metal bottle of substan- tially 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 dim- ple 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 re- duced size suitable for mounting a nipple, ferrule or valve fit- ting therein.
443828
Alco Industries Inc.
Riches Mckenzie & Herbert Llp
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