B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
113/28, 113/33
B21D 51/26 (2006.01)
Patent
CA 1214359
-11- NECKED-IN CONTAINER BODY AND APPARATUS FOR AND METHOD OF FORMING SAME ABSTRACT OF THE DISCLOSURE This relates to the necking-in of a free end portion of a container, and particularly a very thin wall can body, utilizing necking-in tooling. The tooling differs from conventional tooling in that in addition to the necking-in operation, it also serves radially inwardly to turn the free edge portion of the container body to facilitate leading-in of the necked-in portion into another tubular container component with the in-turned free edge portion also providing a section modulus which effects stiffening and form retaining of the free end portion. In addition, it has been found that conventional necking-in tooling for aluminum can bodies having a free edge thick- ness on the order of 0.0075 inch will not perform satis- factorily on like can bodies having a free edge thickness on the order of 0.006 inch, and that surprisingly by in- creasing an adjacent radius, the tooling will perform satisfactorily. This abstract forms no part of the speci- fication of this application and is not to be construed as limiting the claims of the application.
409864
Kubis Charles S.
Walter John
Continental Can Company Inc.
Ogilvy Renault
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