Method for forming a container pan

Details Method for forming a container pan Method for forming a container pan

1976-07-22

1980-01-29

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

113 1G, 113 18A, B21D 2200

Patent

active

041854888

ABSTRACT:
A method and apparatus are disclosed for forming a drawn container pan having planar side walls and smooth curved corner walls the upper edges of which are formed with an outwardly directed peripheral stacker ledge and an upstanding rim, and wherein the pan is formed by drawing the peripheral edge of a blank between clamping surfaces under selected pressure differential at the portions of the blank forming the side and corner walls of the pan. A method and apparatus are also disclosed for trimming the drawn pan and forming stacking protuberances adjacent the corners of the pan.

REFERENCES:
patent: 2294451 (1942-09-01), Ernot
patent: 2843071 (1958-07-01), Kitzinger
patent: 3147723 (1964-09-01), Williamson
patent: 3147724 (1964-09-01), O'Brien et al.
patent: 3163142 (1964-12-01), Ouhrhe
patent: 3344646 (1967-10-01), Moller
patent: 3395562 (1968-08-01), Bushi
patent: 3421466 (1969-01-01), Hess
patent: 3668114 (1972-06-01), Vyacheslavovich

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