Abstract: A secondary battery includes: a can having an accommodation space therein; an electrode assembly accommodated in the accommodation space in the can; and a cap assembly sealed with the can. The can has a beading part recessed into a side wall of the can at a region below where the cap assembly is accommodated, and the beading part has an acute angle with respect to the side wall of the can.

Abstract: Disclosed in a spring shoe for a balance correction which comprises a shoe rear side bottom plate which is made from a rigid synthetic resin material and is engaged to a rear side of a lower surface of a shoe outer leather and has an engaging groove which is downwardly open at a rear, lower surface; a shoe front side bottom plate which is engaged to a front side of a lower surface of the shoe outer leather in a shape that the rear side covers the front side of the shoe rear side bottom plate; and a coil spring which is formed with its width being gradually reduced from a lower side to an upper side.