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PROCESS FOR MAKING METALLIC HOLLOW ARTICLES

  • US 3,759,205 A
  • Filed: 06/04/1970
  • Issued: 09/18/1973
  • Est. Priority Date: 06/26/1967
  • Status: Expired due to Term
First Claim
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1. A process of making an aerosol dispensing or similar hollow container from a tubular blank closed at one end, which comprises supporting said blank by its closed end and performing a sequence of shaping steps each of which comprises relatively moving a shaping die axially of the blank toward the support by which said blank is supported, said die having a circumferentially continuous surface engaging an annular portion of said blank simultaneously throughout its circumference to effect a cold deforming of said engaged portion of said blank radially by different amounts in one direction relative to its longitudinal axis by axial movement of said die and repeating the shaping step with a different die engaging a part of the same portion of said blank to deform said blank radially by different amounts and in an opposite direction relative to said first-mentioned direction to produce a container having different cross sectional areas at different points along its length.

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