초록 ▼

An improved plastic container and cover with three connections for sealing the cover to the container. The top end of the container has an annular flange on the inner side of its sidewall forming a slot. The cover has two walls extending downward from its outer lip. The walls mate with the slot and

An improved plastic container and cover with three connections for sealing the cover to the container. The top end of the container has an annular flange on the inner side of its sidewall forming a slot. The cover has two walls extending downward from its outer lip. The walls mate with the slot and the inner portion of the flange so as to form a straight-sided capped container. Slots may be provided in the outer edge of the cover to allow the cover to be pried off the container.

대표청구항 ▼

Container apparatus comprising in combination: a container comprising a side wall having a top end and a bottom end, a bottom wall closing off said bottom end, and a resilient circumferentially-extending flange; said top end terminating in a substantially flat upper edge; said flange having (1) a su

Container apparatus comprising in combination: a container comprising a side wall having a top end and a bottom end, a bottom wall closing off said bottom end, and a resilient circumferentially-extending flange; said top end terminating in a substantially flat upper edge; said flange having (1) a substantially annular outer flange portion attached to said top end of said sidewall a predetermined distance below said upper edge and (2) a substantially tubular inner flange portion attached to said outer flange portion and spaced inwardly from said side wall, so that an annular slot is formed by said flange and said side wall with said slot being closed at its bottom side and open at its top side and having first and second oppositely disposed locking grooves near its closed bottom side formed at least in part by recessed portions of said side wall and said inner flange portion; and a third groove on the inner side of said tubular inner flange portion, a circular cover comprising a center body portion surrounded by and integral with an annular outer lip portion that terminates in an outer edge, concentric inner and outer tubular wall portions formed integral with and extending down substantially at a right angle from said lip portion, said outer tubular wall portion also being concentric with and spaced inwardly of said outer edge; said outer tubular wall portion terminating in first and second opposed beads and said inner tubular wall portion having a third bead in confronting relation with said second bead, said outer tubular wall portion of said cover extending into said slot so that said first and second beads are locked in said first and second grooves and said inner flange portion extending between said inner and outer tubular wall portions so that said third bead is locked in said third groove, whereby said cover is locked to said container, and said center body portion of said cover being recessed below said annular lip portion and said annular lip portion substantially fully overlying and engaging said flat upper edge of said side wall, so that if a plurality of said containers with said covers locked thereto are stacked one upon the other in axial alignment, the compressive load presented by the weight of the stacked containers and their contents will be carried by the said side walls of said containers and not by said internal flange or said center body portion of said cover.