초록 ▼

A closure adapted to be applied to a neck of a vessel or container so as to seal a comparatively wide mouth in said neck has a rim or skirt which is divided up into a plurality of sections by slits between the sections depending from a lid portion of the closure and a stressing or tensioning band pl

A closure adapted to be applied to a neck of a vessel or container so as to seal a comparatively wide mouth in said neck has a rim or skirt which is divided up into a plurality of sections by slits between the sections depending from a lid portion of the closure and a stressing or tensioning band placed around the rim, the arrangement being such that there is at most only slight engagement between corresponding screw threads or the like on the neck and in the skirt when the closure is applied to the neck, full sealing engagement between the said screw threads being produced by tensioning of said band after the closure is in position on the neck, such tensioning causing the initially radially outwardly splayed said sections to be pulled radially inwardly on to the neck. The vessel and closure are preferably of thermoplastic material. Preferably tensioning of said band also causes the closure to move axially into more intimate contact with the vessel to compress a sealing ring and thereby improve the seal therebetween.

대표청구항 ▼

The combination of a vessel having a mouth in a marginal region of said vessel, a closure and selectively engageable stressing means associated with said closure for causing said closure to seal said mouth, said closure having a lid portion and a rim depending from said lid portion, relatively inter

The combination of a vessel having a mouth in a marginal region of said vessel, a closure and selectively engageable stressing means associated with said closure for causing said closure to seal said mouth, said closure having a lid portion and a rim depending from said lid portion, relatively interengageable projections and recesses being provided on said marginal region and in said rim, said rim being sub-divided into sections forming a positive fit with said marginal region between said interengageable projections and recesses when said closure is secured to said marginal region by stressing of said stressing means, and said rim sections being, when not stressed by said stressing means, splayed radially outwardly relative to said marginal region such that said projections and recesses are in relative engagement at most loosely over only a portion of the height of said rim.