초록 ▼

A metal container for holding fluids is provided having a bottom wall including a externally convex dome portion and a plurality of supporting feet formed therein. The supporting feet are circumferentially spaced apart from each other and projected generally downward beyond the dome portion. Each su

A metal container for holding fluids is provided having a bottom wall including a externally convex dome portion and a plurality of supporting feet formed therein. The supporting feet are circumferentially spaced apart from each other and projected generally downward beyond the dome portion. Each supporting foot has formed thereon stand features and stacking features. The stand features are radially spaced from the longitudinal axis of the container and disposed at downwardmost locations on the feet to alone support the container in an upright position on a flat horizontal surface when the container is not internally pressurized. The stacking features are disposed adjacent to the stand features and define, in cross-sectional elevation view, axial stacking surfaces and radial stacking surfaces. The axial stacking surfaces are axially positioned in relation to stand features and the radial stacking surfaces are radially positioned in relation to the longitudinal axis so as to interfit with an upper seamed edge of an adjacent below container to alone provide for stacking engagement when the container is not internally pressurized. Since the bottom wall does not rely on any large-radius externally concave mechanical features to resist internal pressurization, a thinner gauge metal can be used to satisfy design parameters and can achieve cost and metal reduction savings. The profile of the bottom wall also results in very small values for profile deformation and changes in can dimensions over a wide range of internal pressures.

대표청구항 ▼

A metal container, comprising: a generally cylindrical side wall and a bottom wall formed integrally with said side wall from a single sheet of metal; said side wall having a longitudinal axis and extending substantially axially upward from said bottom wall to define an interior cavity and an open e

A metal container, comprising: a generally cylindrical side wall and a bottom wall formed integrally with said side wall from a single sheet of metal; said side wall having a longitudinal axis and extending substantially axially upward from said bottom wall to define an interior cavity and an open end of the container adapted to be closed with a lid seamed onto said open end; said bottom wall including a externally convex dome portion and a plurality of discrete supporting feet formed therein, said feet being circumferentially spaced apart from each other and projecting generally downward beyond said dome portion in the absence of internal pressure in the interior cavity; each said foot having formed thereon stand features and stacking features; said stand features radially spaced from said longitudinal axis and disposed at downwardmost locations on said feet and alone supporting the container in an upright position on a flat horizontal surface in the absence of internal pressure in the interior cavity; said stacking features disposed adjacent to said stand features and defining, in cross-section elevation view, axial stacking surfaces and lateral stacking surfaces; and said axial stacking surfaces being axially positioned in relation to said stand features and said lateral stacking surfaces being radially positioned in relation to said longitudinal axis to interfit with an upper seamed edge of an adjacent below container whereby said stacking features alone support the container in stacking engagement in the absence of internal pressure in the interior cavity.