Double bead track cap system

A tamper-evident closure for application to a container body,

• said container body including an open end and having a radially projecting annular collar disposed proximate said open end, said annular collar having a predetermined longitudinal length at a predetermined axial position thereon,
• said closure comprising a one-piece closure body including a horizontal end wall and a cylindrical side wall,
• said cylindrical side wall including an upper portion, an annular lower skirt portion and an intermediate side wall portion therebetween.
• said intermediate side wall portion including frangible means, said frangible means defining an area of weakness for providing evidence of closure dislocation by fracture thereof,
• said annular lower skirt portion including an inner surface, said inner surface defining a radially protruding upper raised portion, a radially protruding lower raised portion and a radial indented central depressed portion therebetween, said central depressed portion having a diameter which is greater than the diameter of said upper and lower raised portions and which is greater than the diameter of said annular collar portion of said container thereby providing a space therebetween, and said central depressed portion having a longitudinal length substantially corresponding to said predetermined longitudinal length of said annular collar at said predetermined axial position,
• whereby, said radially projecting annular collar can be locked between said upper raised portion and said lower raised portion within said central depressed portion creating a locked condition, said locked condition causing fracture of said frangible portion upon removal of said closure from said container body.