Container and lid

In a container and lid therefor, the container having a sidewall and a rim at the upper end of the sidewall, the rim defining a wide mouth for the container, said container and lid further comprising, in combination:

• said rim being formed intergrally with the container sidwall, the rim having an upper edge and an outer lip which extends radially outwardly, the outer lip having a maximum diameter;
• the outer lip having an upper sealing surface which extends dowwardly and outwardly from the upper edge of the rim to the maximum diameter of the outer lip;
• said lip having a lower surface which extends from the maximum diameter to the container sidewall, said lower surface defining a sharper, more abrupt transition back toward the container sidewall than is defined by the upper sealing surface;
• said lid including a top wall and a sidewall extending downwardly from the periphery of the lid;
• said sidewall including a relatively thin resilient sidewall web segment depending downwardly from said top wall and being stretchable heightwise and expandable radially;
• a shirt integral with and extending downwardly from the lower region of said web segment, said skirt being thicker than said web segment and displaying a greater resistance to radial and heightwise expansion and a greater elastic memory than said web segment;
• said web segment being stretchable heightwise to enable it to wrap snugly and sealingly around the upper sealing surface of said container lip when said lid is applied to said container, said skirt being constructed to retain the stretched web segment in sealing engagement with said container lip when said lid is applied to said container;
• the diameter defined by the web segment being less than the outer diameter of the lip whereby when the container lid is advanced out to the container rim, the web segment of the lid will be wrapped at least partly about the rim to form a band of sealing contact between the web segment and the upper sealing surface of the lip;
• said lid further comprising a V-shaped ring formed integrally with and extending downwardly from the lid top wall, the V-shaped ring having an outer wall which faces the sidewall of the lid and defines, in cooperation with the lid sidewall, a channel receptive to the container rim, the slope of the V-ring outer wall being downwardly and inwardly so as to define an upwardly tapering wedge-shaped channel, the wedge-shaped channel being dimensioned to receive the container rim and to squeeze the rim;
• a shoulder formed at the inner surface of the sidewall and being adapted to engage the underside of the lip;
• the heightwise distance from the top wall of the channel to the shoulder being greater than the heightwise distance from the top of the rim to the underside of the container lip whereby the lid may have a limited degree of heightwise motion on the container while maintaining a circumferential band of snug sealing contact between the web segment and upper sealing surface of the container lip.

In a container having a sidewall and a rim at the upper end of the lid sidewall, the rim defining the mouth of the container, an improved rim construction comprising:

• said rim being formed integrally with the container sidewall, the rim having an upper edge and an outer lip which extends radially outwardly, the outer lip having a maximum diameter;
• the outer lip having an upper sealing surface which extends dowwardly and outwardly from the upper edge of the rim to the maximum diameter of the outer lip;
• said lip having a lower surface which extends from the maximum diameter to the container sidewall, said lower surface extending more sharply toward the container sidewall than the upper sealing surface;
• the rim having an inner lip which extends downwardly and inwardly from the upper edge of the rim to define a downwardly and inwardly sloping surface;
• said inner lip defining a minimum diameter which is smaller than the inside diameter of the container wall, the lip hsving a lower surface which extends outwardly from the minimum diameter and which merges with the inner surface of the container wall;
• and
• the inner lip extending less sharply toward the sidewall than does the outer lip.