Lid

Claim 2

A lid for gripping and sealing engagement with a container having a bead about an upper edge thereof, said lid comprising a central panel, means defining an inwardly opening, circumferentially extending cavity on said lid at a position radially outwardly of said central panel to receive said bead and to abut said bead in sealed engagement, means connecting said cavity to the outer edge of said panel, a conical skirt extending downward and outward from the lower edge of said cavity defining means and terminating a free end having a diameter larger than the diameter of said bead, whereby the upper portion of said skirt and the lower portion of said cavity defining means from a waist, and a series of circumferentially spaced flutes, interrupting said waist, the portions of said skirt between said flutes acting as lands when the lid is telescoped on a container, each of said lands having a decreasing circumferential extent from a lower portion to an inner portion thereof to facilitate flexing of said land radially outward when cammed by the container bead, the lower portion of said cavity defining means being moveable into position beneath said bead to grip the latter when the lid is fitted on said container.

Claim 3

A lid in accordance with claim 1 in which said cavity-defining means is elongated in the vertical direction to accommodate bulges in the container bead.

Claim 4

A lid in accordance with claim 1 in which said connecting means includes a flexible annular corrugated ring disposed between said central panel and said cavity-defining means, each of the corrugations in said ring being tapered in height with the higher ends outermost.

Claim 5

A lid in accordance with claim 3 in which said flutes project upwardly into said cavity-defining means to a point immediately below a tangential line to said cavity-defining means.

Claim 6

A lid in accordance with claim 4 in which the waist extends inward to about one-half of the width of said cavity and the skirt extends downward at an angle of less than about 31* to the vertical plane.

Claim 7

A lid in accordance with claim 1 in which stacking lugs in the shape of oblique frustums of triangular pyramids depend from said central panel and into the area defined by said skirt for resting on another central panel of another lid when stacked therewith, said lugs having one corner thereof directed outward.

Claim 8

A lid in accordance with claim 5 in which said connecting means includes a tapered collar connecting the inner end of the corrugations to the central panel.

Claim 9

A lid for gripping and sealing engagement with an open mouth container having an annular bead about the upper edge thereof, said lid comprising a central panel extending substantially across the mouth of the container, a conical-shaped collar joined to outer edge of said panel, a ring having radially extending corrugations joined to and projecting outward and downward from said collar, said corrugations being tapEred in height with the higher ends being outermost, a circumferentially extending cavity defining means joined to said ring and elongated in the vertical direction to receive said container bead and to have a sealed engagement therewith, a conical skirt depending from said cavity defining means and projecting downwardly and outwardly to a free end having a diameter larger than that of said container bead, whereby the lower portion of said cavity-defining means and the upper portion of said skirt forms a waist and a series of flutes interrupting said waist, the portions of said skirt between said flutes acting as lands when the lid is telescoped on the container, each of said lands having a decreasing circumferential dimension in the upward direction and flexing outward about the lower and wider portion of said land to permit telescoping of said lid on said container bead, said lower portion of said cavity-defining means flexing inward and beneath said bead when said lid is telescoped on said container to grip therewith and hold said lid in sealed engagement with said container bead.

Claim 10

A lid for gripping and sealing engagement with an open mouth container having an annular bead about the upper edge thereof, said lid comprising a central panel extending substantially across the mouth of the container, a conical-shaped collar joined to outer edge of said panel, a ring having radially extending corrugations joined to and projecting outward and downward from said collar, said corrugations being tapEred in height with the higher ends being outermost, a circumferentially extending cavity defining means joined to said ring and elongated in the vertical direction to receive said container bead and to have a sealed engagement therewith, a conical skirt depending from said cavity defining means and projecting downwardly and outwardly to a free end having a diameter larger than that of said container bead, whereby the lower portion of said cavity-defining means and the upper portion of said skirt forms a waist and a series of flutes interrupting said waist, the portions of said skirt between said flutes acting as lands when the lid is telescoped on the container, each of said lands having a decreasing circumferential dimension in the upward direction and flexing outward about the lower and wider portion of said land to permit telescoping of said lid on said container bead, said lower portion of said cavity-defining means flexing inward and beneath said bead when said lid is telescoped on said container to grip therewith and hold said lid in sealed engagement with said container bead.

Claim 11

A lid in accordance with claim 8 in which stacking lugs in the shape of oblique frustums of triangular pyramids depend from said central panel into the area defined by said skirt for resting on another central panel of another lid when stacked therewith, said lugs having one corner thereof directed outward.

Claim 12

A lid in accordance with claim 8 in which the waist extends inward about one-half the radial width of said cavity.