Container and cap with guarantee ring

Claim 1

A package including a container which comprises a substantially cylindrical casing having at least one open end, and an annular closure cap; said cap being detachably connected to an annular guarantee ring via tear webs which are broken or torn when opening the closure cap, said guarentee ring having inner and outer diameters; said open end of said casing being provided with a single outwardly extending annular bead having an outer diameter larger than the inner diameter of said guarentee ring so that when said guarentee ring is pressed over said annular bead, said guarantee ring elastically expands; said closure cap being formed with an inwardly protruding annular rim which overlaps said outwardly extending annular bead when said closure cap is in place on said casing; wherein said inwardly protruding annular rim has a inner diameter larger than the inner diameter of the guarantee ring but smaller than the outer diameter of said single, outwardly extending annular bead; and wherein the distance between the inwardly protruding annular rim of the closure cap and the underside of said closure cap is larger than the distance between said single annular bead and the open casing end; and wherein when the package is originally closed, the guarantee ring lies in axially spaced relationship to the single annular bead, on that side of said bead which faces away from the open casing and such that, upon upward lifting of the cap, said annular rim of said closure cap is pulled over said annular bead, and said guarantee ring is free to slide upwardly along said cylindrical casing until it engages said annular bead.