Method and apparatus for manufacture of a vessel

Details Method and apparatus for manufacture of a vessel Method and apparatus for manufacture of a vessel

1982-01-27

1984-12-18

Larson, Lowell A.

Stoves and furnaces

Liquid heater

Open-top vessel that may include lid

220 66, 220 70, A47J 2700

Patent

active

044885385

ABSTRACT:
A cooking vessel, comprising: a substantially cup-shaped stainless steel member forming a substantially cylindrical side wall and a substantially planar bottom, the lower portion of the side wall adjacent the bottom having an inwardly directed annular shoulder which is thicker than the remainder of the side wall, the bottom being thicker than the annular shoulder of the lower portion of the side wall, and the outer surface of the cylindrical wall being formed by a roller compression process which imparts thereto increased strength and toughness as well as a substantially crack-free and pore-free surface with a bright finish. The outer surface of a transition portion between the side wall and the bottom is flatly curved, the curved transition surface and the side wall meeting at a thin annular shoulder defined by a sharp edge at the bottom of the side wall. The lower surface of the bottom may be roughened to provide a non-skid surface with improved heat transfer characteristics.

REFERENCES:
patent: 1454836 (1923-05-01), Slocomb
patent: 2573736 (1951-11-01), Scavullo

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