Method of reforming a can end

Details Method of reforming a can end Method of reforming a can end

1976-05-21

1977-06-28

Keenan, Michael J.

B21D 5144

Patent

active

040318370

ABSTRACT:
A method is disclosed for reforming a metallic can end to increase the pressure holding capabilities of the container to which the can end is seamed comprising the steps of increasing the depth of an annular groove with respect to a substantially planar center wall and reducing the radius of curvature of a curved portion at the bottom of the annular groove between an inner wall on the inside of the annular groove and an integral chuckwall on the outside of the annular groove.

REFERENCES:
patent: 1385290 (1921-07-01), Welling
patent: 1838302 (1931-12-01), Evans
patent: 2017460 (1935-10-01), Hothersall
patent: 3417898 (1968-12-01), Bozek et al.
patent: 3537291 (1970-11-01), Hawkins

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