Receptacles – Outlet or junction box type – Sectional receptacle
Patent
1984-03-23
1987-07-21
Schmidt, Frederick R.
Receptacles
Outlet or junction box type
Sectional receptacle
72330, 72337, 220 66, 220 72, 220DIG22, 413 69, B65D 634
Patent
active
046812377
ABSTRACT:
In the manufacture of metal packaging cans metal sheet is deep-drawn and ironed to form a seamless tube having a bottom in one-piece therewith, and the tube is cut transversely to remove excess material at the end remote from the bottom. This forms a cylindrical body and bottom of a two-piece can. To minimize waste of material and to make possible the manufacture of a thin-walled three-piece can, the method includes cutting the deep-drawn and ironed tube transversely at at least one location intermediate the bottom and the end remote from the bottom so that, from the tube, there are formed a cylindrical body and bottom of a two-piece can and at least one cylindrical body of a three-piece can. Suitably, the tube is shaped by the deep-drawing and ironing so as to have a lesser wall-thickness at regions corresponding to the sidewalls of the cans and a greater wall-thickness at regions which correspond to the flange portions of the cans.
REFERENCES:
patent: B223678 (1976-03-01), Nixon et al.
patent: 3428010 (1969-02-01), Frankenberg
patent: 3951296 (1976-04-01), Swanson et al.
patent: 3953994 (1976-05-01), Brawner et al.
patent: 4320848 (1982-03-01), Dye et al.
Hoogovens Groep B.V.
Schmidt Frederick R.
Showalter Robert
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