초록 ▼

An upwardly open end portion of a plastic container straight sidewall is telescoped by an inverted U-shaped portion of a plastic engagement ring with a generally transverse, outward flange on the container sidewall snap interengaging with a similar engagement ring flange. An engagement ring U-shaped

An upwardly open end portion of a plastic container straight sidewall is telescoped by an inverted U-shaped portion of a plastic engagement ring with a generally transverse, outward flange on the container sidewall snap interengaging with a similar engagement ring flange. An engagement ring U-shaped portion extends transversely inwardly having, in certain embodiments, either a simple or complex outer wall common with the inverted U-shaped portion and in all cases an interior wall spaced inwardly therefrom. An edge portion of a plastic cover overlies the engagement ring U-shaped portion and has a downward extension fitting therein divided into an exterior wall outwardly abutting the ring U-shaped portion outer or common wall and a transverse inward flange snap interengaging with a similar flange on the ring interior wall. The cover edge portion terminates inwardly at an interior wall which outwardly abuts the ring U-shaped portion interior wall and a cover transverse connecting part joins the edge portion interior wall vertically intermediate both the cover edge portion interior wall and the ring U-shaped portion interior wall. In the assembly, the engagement ring and cover are constructed to exert transverse pressure outwardly to outwardly abuttingly pressure seal between the cover edge portion and the engagement ring, and between the engagement ring and the container sidewall inner side. The cover edge portion terminates outwardly in a transverse flange spaced above the engagement ring and engageable by a tool for removing the cover from the engagement ring.

대표청구항 ▼

In an assembly of a container, engagement ring and cover, the improvements including: the engagement ring having a generally inverted U-shaped portion telescoped downwardly over an open upper end of the container, said ring inverted U-shaped portion having interior wall means generally vertically an

In an assembly of a container, engagement ring and cover, the improvements including: the engagement ring having a generally inverted U-shaped portion telescoped downwardly over an open upper end of the container, said ring inverted U-shaped portion having interior wall means generally vertically and transversely abutting an inner side of said container upper end; the cover terminating transversely outwardly at said engagement ring in an edge portion at said ring inverted U-shaped portion with said edge portion having an exterior wall generally vertically and transversely abutting an inner side of said ring inverted U-shaped portion interior wall means; said engagement ring and cover being constructed and arranged exerting transverse pressure outwardly to abutting pressure seal between said cover edge portion exterior wall and ring inverted U-shaped portion interior wall means and between said ring inverted U-shaped portion interior wall means and container upper end inner side; at least partially transversely extending interengagement means between said container upper end and ring and between said ring and cover edge portion for retaining said ring against generally vertical separation from said container and said cover against generally vertical separation from said ring.