发明名称 Method and apparatus for manufacture of a vessel
摘要 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.
申请公布号 US4488538(A) 申请公布日期 1984.12.18
申请号 US19820343369 申请日期 1982.01.27
申请人 FISCHER, KARL 发明人 FISCHER, KARL
分类号 B21D22/28;B21D22/14;B21D22/16;B21D22/30;B21D51/18;B21D51/22;(IPC1-7):A47J27/00 主分类号 B21D22/28
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