Patent ID: 6296139
Filing Date: 2001-10-02
Classification: B21D,B65D

Abstract:
A can having a can body comprising:a dome section, wherein said dome section is formed on a bottom of said can and is recessed inwardly of said can body;an annular projection, wherein said annular projection is formed around a peripheral edge of said dome section so as to project outwardly in a direction of a central longitudinal axis of said can, and wherein said annular projection includes a nose at an extreme end thereof, an inner peripheral wall located internally of said nose, and an inner projection formed below said inner wall in a direction toward said bottom of said can and projecting inwardly in a radial direction; anda plurality of inner recesses formed in said inner peripheral wall of said annular projection in a circumferential direction so as to be recessed inwardly of said can body such that each inner recess of said plurality of inner recesses is curved at a predetermined radius of curvature and an angle .theta., between a tangential line at an upper end of each inner recess of said plurality of inner recesses and a tangential line at a lower end of each inner recess of said plurality of inner recesses, is set to satisfy 85.degree..ltoreq..theta..ltoreq.103.degree., and wherein each inner recess of said plurality of inner recesses is extends concavely inwardly in said radial direction of a line tangent to said inner projection of said annular projection and parallel to said central longitudinal axis of said can.