US3583596A - Lid - Google Patents

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Publication number
US3583596A
US3583596A US3583596DA US3583596A US 3583596 A US3583596 A US 3583596A US 3583596D A US3583596D A US 3583596DA US 3583596 A US3583596 A US 3583596A
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Prior art keywords
lid
cavity
container
bead
skirt
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Clarence T Brewer
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Solo Cup Co
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Solo Cup Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0204Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00027Stackable lids or covers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00064Shape of the outer periphery
    • B65D2543/00074Shape of the outer periphery curved
    • B65D2543/00092Shape of the outer periphery curved circular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00296Plastic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509Cup
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00611Profiles
    • B65D2543/00638Rolled edge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00675Periphery concerned
    • B65D2543/00685Totality
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00722Profiles
    • B65D2543/00731Groove or hollow bead
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00787Periphery concerned
    • B65D2543/00796Totality

Abstract

A coverall lid or closure for gripping and sealing engagement with the bead of a cuplike container. The lid includes a central panel which is connected to a circumferential cavity by means of a corrugated ring. The cavity is adapted to receive the bead of the container and abut the bead in sealed engagement. A conical skirt extends downward and outward from the lower edge of the cavity. The upper portion of the skirt and the lower portion of the cavity form a waist and this waist is interrupted by a series of circumferentially spaced flutes. The portions of the skirt between the flutes act as lands, each land having a decreasing circumferential extent from a lower portion to an inner portion thereof to facilitate flexing of the lands radially outward when engaged by the container bead. The lower portion of the cavity is moveable into position beneath the bead to grip the latter when the lid is fitted on the container.

Description

United States Patent 3,353,708 11/1967 Davis Inventor Clarence T. Brewer Oak Park, Ill. Appl. No. 843,671 Filed July 22, 1979 Patented June 8, 1971 Assignee Solo Cup Company Chicago, Ill.

Lil) 10 Claims, 5 Drawing Figs.

[1.8. CI 220/60, 220/97, 229/43 Int. Cl 865d 43/10 Field of Search 220/60, 97, 44; 229/43; 215/41 References Cited UNlTED STATES PATENTS 3,384,265 511968 Frank Primary Examiner-George T. Hall Atl0rneyAnderson, Luedeka, Fitch, Even and Tabin ABSTRACT: A coverall lid or closure for gripping and sealing engagement with the bead of a cuplike container, The lid includes a central panel which is connected to a circumferential cavity by means of a corrugated ring. The cavity is adapted to receive the bead of the container and abut the head in sealed engagement. A conical skirt extends downward and outward from the lower edge of the cavity. The upper portion of the skirt and the lower portion of the cavity form a waist and this waist is interrupted by a series of circumferentially spaced flutes. The portion of the skirt between the flutes act as lands, each land having a decreasing circumferential extent from a lower portion to an inner portion thereof to facilitate flexing of the lands radially outward when engaged by the container bead. The lower portion of the cavity is moveable into position beneath the head to grip the latter when the lid is fitted on the container.

PATENTEU JUN BIB?! SHEET 1 BF 2 FIGJ FIG.2

INVENTOR CLARENCE T. BREWER n Ann.

PATENTEU JUN 8 12m sum 2 or z FIG.5 I

T M39 mm 7 H I cua ence 1'. menu Mm, {M4, 7%,

This invention relates to lids for cuplike containers and more particularly to lids of the single end use, disposable type for cuplike containers having a curled top edge or bead.

Cuplike containers, having their top edges curled outwardly, downwardly and back under to form curled rims or beads, are commonly used to package foods, both solid and liquid, especially for carryout and end-point serving. Such containers are generally of the tapered or conical nesting type. The containers may be manufactured from sheet paper, treated or saturated with wax or a combination of wax and plastic, or from sheet paper laminated to thin plastic which serves as the interior of the container. Alternately, the cuplike containers may be post-treated with a coating, or a saturated coating, of wax or of a combination of wax and plastic. Containers of the above-described type may also be manufactured from sheet plastic by the thermovacuum-pressure forming process. In both the paper and plastic manufacturing processes, it is common practice to form the body of the container in one operation and the head in another operation, with both operations being automatically and progressively performed in one machine.

Variations in material characteristics, in sheet thickness and in manufacturing tools and processes cause dimensional tolerances in the container mouth diameter and the size or thickness of the bead that are difficult to economically control below a certain minimum. There are roundness irregularities in the circumference of the container and there are also variations in the uniformity of the bead size around the top edge of the container. Also, the bead is not exactly round; it is normally either round or egg-shaped with the top edge having the smaller curvature. The bead in containers made of sheet paper has a slightly enlarged portion resulting from the side seam of such containers.

The lid for such a container, in order to fit snugly on the container and be reasonably Ieaktight, should compensate for these nonuniformities or irregularities in the bead and container mouth and the variations between containers. Of course, the lid should be easy to apply to, or remove from the container. Other desirable features which should be provided in the lid are: (I The lid should have sufficient retention on the container so that when two or more full containers with attached lids are placed in a bag or package in juxtaposition with the edge of the lid of one container overhanging one or more other lids, the weight of that one container does not peel or rake off the lid; (2) When the container with the attached lid is held or lifted by gripping opposite sides of the skirt of the lid with the thumb and fingers, the retention of the lid on the container should be increased; (3) The skirt of the lid should be of sufficient length to provide sanitary protection for the lip area when lifting or holding the container with the attached lid in the above-described manner; 4) For ease of manufacture, the lid should be of such a design that it is easy to form by a thermovacuum-pressure forming process and is easy to strip from the mold.

Stacking of the lid is another important consideration, particularly where the lids are picked up, conveyed or transported to packaging for shipment or where the lids are dispensed to end use. The lids should nest freely, one with the other, and should nest uniformly laterally so as to form a very rigid column that can be compressively picked up or conveyed by the ends of the stack. The lids should maintain this uniform stack in a shipping carton and be capable of separation from nesting without resistance for dispensing to end use.

An object of the present invention is to provide a lid which incorporates one or more of the above desirable features.

Other objects and advantages of the invention will become apparent from the detailed description taken in connection with the accompanying drawings in which:

FIG. 1 is a perspective view of a container having an attached lid embodying the features of the invention;

FIG. 2 is a top view ofthe lid of FIG. 1;

FIG. 3 is an enlarged fragmentary, cross-sectional view ofa lid on a container;

FIG. 4 is an enlarged fragmentary, cross-sectional view of several lids in a stack; and

FIG. 5 is an enlarged fragmentary viewof flutes and lands on the lid.

As shown in the drawings, a lid 11 is provided having a circumferentially extending cavity 12 (as best seen in FIG. 3) for releasable sealing engagement with a head 13 of a cuplike container 15 which may be either made by vacuum forming sheet plastic or made from sheet paper, as previously described. The lid 11 is formed with a central disclike panel 17 adapted to extend substantially across the open mouth 19 of the container when the lid is telescoped on the container. The lid also includes a conical lid skirt 21 which extends downward from the lower edge of the cavity 12. The lower portion of the cavity 12 and the upper portion of the skirt 21 form a waist and this waist is interrupted by a series of circumferentially spaced flutes 22. In telescoping the lid 11 on the container 15, the portions 23 of the skirt between the flutes 22 act as lands 23 which are cammed laterally outward by the bead 13 of the container thereby expanding the waist to permit it to pass over the container head 13. A corrugated ring 25 is disposed between the cavity 12 and the central panel 17, for a purpose described hereinafter. The lid 11 is provided with stacking lugs 27 projecting downwardly from the central panel to rest on the top of the central panel ofa lid immediately beneath it, as best seen in FIG. 4.

Referring now in greater detail to the embodiment shown in the drawings, the lid 11 is preferably designed so that it is easily manufactured from a plastic sheet by a thermovacuumpressure forming process and is easily stripped from its mold. For purposes of description, the lid 11 is described as it would be viewed from the container or its underside. The lid 11 includes the conical skirt 21 which, as illustrated, flares generally downward and outward from the lower portion of the cavity 12 to a maximum diameter at its lower free edge. Along the lower edge of the skirt 21 is an outward extending and substantially horizontal flange 29 which may be employed as a surface to be pushed for detaching the lid 11 from the container 15. This flange, which is necessary for presently available trimming operations, should be as narrow as possible to minimize the possibility of the lid being raked off by adjacent containers, as previously described.

When the lid 11 is initially placed on the container, it is normally skewed with one side of the bead l3 seated fully in the cavity 12. The inner diameter of the lower free edge of the skirt 21 is made of sufficient diameter to cover the maximum tolerance outside diameter of the container bead 13 when the lid 11 is in the skewed position on the container. The skirt 21 is made of sufficient length to provide a low-pressure angle as the skirt slides over the bead 13. When the lid 11 is attached to the container 15, the skirt 21 provides sanitary protection for the lip area about the container mouth.

The upper portion of the skirt 21 and the lower portion of the cavity 12 form a waist. The waist is interrupted by a series of circumferentially spaced-apart flutes 22. The illustrated flutes 22 are radius grooves which is the preferred shape but, in certain applications, they also may be narrow slots. These flutes 22 provide telescopic rigidity to the skirt 21 and the lower portion of the cavity 12, thereby avoiding an inward bellows action when the lid is applied to the container.

The relatively flat portions 23 of the skirt 21 between the flutes act as lands, which are cammed outward by the bead 13, when the lid is pressed downwardly on the container 15, without digging in or marring the bead. To this end the lands 23 have sufficient conical strength structurally to cause the flutes to expand circumferentially or diametrically, that is, the width of the lands 23 vary between the lower and upper portions thereof. Each land 23 has a wider circumferentially extending lower portion 37 (FIG. 4) at the lower free end of the skirt 21 than at an upper or innermost portion 39.

The lands 23 are connected to lower rounded portions 43 of the rim-receiving cavity 12. The lower rounded portions 43 of the cavity 12 form hooks or latches that snap over the bead 13 and apply a slight tightening down camming action to hold the lid against inadvertent separation from the container 15. The lower rounded portions 43 extend inward approximately to one-half the width of the cavity 12. For the purpose of facilitating the camming and snapping action of the hooks 43 on the container bead 13, the lower rounded portions 43 are formed with a downwardly curved surface disposed at an angle of about 43 to the horizontal as exemplified by the angle A in FlG. 4. With a smaller angle it would be difficult to remove the lid from the mold.

The waist is expanded by the narrower upper portions 39 of the lands 23 being cammed laterally outwardly. This camming action causes the walls forming the adjacent flutes 22 to be distorted and the rounded portions 43 to roll outward. The increased intermediate widths of the flutes 22 and the nonparallelism of the land-defining walls also aid in the flexing to accommodate the bead 13. The camming action is facilitated by providing the land 23 at a small angle relative to the vertical (angle B in FIG. 3) preferably at an angle not greater than about 31.

The pivoting of the land 23 and the outward rolling of the rounded portions 43 to expand the waist are further enhanced by having the tops of the flutes 22 joined to the rim-receiving cavity 12 as close as possible to a point of tangency with the inner surface of the cavity 12, as best seen in FIG. 3. If the tops of the flutes 22 were made tangential to the cavity 12, the flutes 22 would extend further upwardly to the center of the cavity 12 and thereby provide passageways between the rim and cavity wall through which liquid might leak. The preferred angle for the point of connection of the flutes 22 to the cavity 12 is at an angle of about l5-20 from a horizontal plane, as illustrated by the angle C in FIG. 3.

As previously explained, beads 13 are formed by a rolling of the material which results in noncircular cross sections and sometimes results in flats, bulges or other variable cross-sectional dimensions in the beads. ln seamed containers, the double thickness of the material at the seam causes an enlargement or bulge. It has been found that containers may have a tolerance in the height of the bead of 0.025 inches. To seal with beads 13 having such variations, the cavity 12 is formed with a vertical dimension, i.e., a height, to receive the maximum tolerance dimension of a container bead. Additionally, an upper rounded wall 45 (FIG. 3) of the cavity 12 is blended into a flat vertically disposed outer wall 49 with the result that the cavity 12 is elongated in the vertical direction. The inner diameter of the vertical wall 49 is selected to be slightly less than the minimum tolerance diameter of the bead 13 or that of the minimum tolerance diameter of the bead with interference. The flatness of the cavity 12 provided by the vertical wall permits the cavity to bulge where needed.

The upper arcuate wall 45 is joined at its inner end with an upwardly facing curved surface 53 at the lower edge of the corrugated ring 25. The corrugated ring 25 extends inward and upward from its lower edge and includes a plurality of corrugations 57 each of which has a substantially uniform circumferential extent and decreases in height. The sides of the corrugations 57 are radially disposed, the corrugations thereby being wider at the outer ends than the inner ends.

The corrugated ring allows the upper wall 45 of the cavity to roll upwardly and outwardly to accommodate variations in the bead diameter. Also, the upwardly curved surface 53 readily deforms in a localized area as the corrugated ring 25 spreads circumferentially and flexes upwardly whereby the lid may fully seat and grip despite bulges or other such enlargements. The corrugated ring 25 also allows the lid to be easily removed from the container without any abrupt or jarring action by placing two or more fingers on top of the lid, near the edge of the panel 17, and the thumb under the lower edge of the skirt 21 and gently squeezing between the thumb and fingers simultaneously with a prying action.

The corrugated ring 25 is connected to the center panel 17 by means of a conical-shaped collar or tapered cylinder 55. The angle between the face of the center panel 17 and the collar (angle D in FlG. 3) is made greater than 90 and the angle between the collar 55 and the upper surface of the corrugated ring 25 (angle E in FIG. 3) is made approximately so that the lid does not permanently buckle. Alternately, the angles may be interchanged (i.c., angle D may be made 90 and angle E may be made greater than 90. Also, this collar 55 facilitates the rolling ofthe cavity 12.

The preferred manner of stacking is by means of three spaced stacking lugs 27, each in the shape of an oblique frustum of a triangular pyramid with the edges of faces flat tened or rounded. The lugs are integrally formed in and project downwardly from the top panel 17 to a position in horizontal plane beneath the plane of lower portions 43 of the cavity 21. More particularly, the bottom walls 61 on the stacking lugs 27 abut the central panel 17 ofa lid immediately below to space the skirt 21 from engaging and prevent its mov ing into a wedging engagement with the outer surface of the lid cavity 12. As illustrated in FIG. 2, the stacking lugs are each positioned so that one corner 67 thereof is directed outwardly so that, when the plastic material from which the lid is thermoformed shrinks upon cooling, the lid is easily stripped from the mold.

The preferred equipment for forming a series of lids simultaneously from a sheet of plastic has the stacking lugs angularly spaced at different angles in the various lid forming dies so that the lids when formed have the stacking lugs in a series of nonmatchable positions. Thus, each group of lids formed from a single sheet may be stacked immediately without having the bottom walls 61 of one lid aligned and projecting into the openings of the stacking lugs in the lid next below.

From the foregoing, it will be seen that the lid may be manufactured by thermoforming or pressured formed from a sheet of plastic and provided with sufficient flexibility at the depending skirt to fit containers having bead diameters which vary substantially over a relatively wide range of tolerances. The lids are particularly suited for accommodating bulges at the seams or other nonuniform cross sections in roller beads. The lids may be readily stacked yet are prevented from wedging into engagement with one another which would prevent the easy release of one lid from another.

While a preferred embodiment has been shown and described, it will be understood that there is no intent to limit the invention by such disclosure but, rather, it is intended to cover all modifications and alternate constructions falling within the spirit and scope of the invention as defined in the appended claims.

What I claim is:

1. 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.

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

3. 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.

4. 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.

5. 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.

6. A lid in accordance with claim 1 in which stacking lugs in the shape of obliquefrustums 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.

7. 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.

8. 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 circum ferentially 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 cavitydefining 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.

9v 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.

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

Patent No. 3, 583, 596 Dated June 8, 1971 Inventor(s) Clarence T. Brewer It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Change the filing date in the heading from July 22, 1979 to July 22, l969.

Signed and sealed this 11th day of January 1972.

(SEAL) Attest:

EDWARD M.FLETCHER, JR. ROBERT, GOTTSCHALK Attesting Officer Acting Commissioner of Patents FORM Po-1050 10-69) uscoMM-Dc 60376-P69

Claims (10)

1. 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.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
10. A lid in accordance with claim 8 in which the waist extends inward about one-half the radial width of said cavity.
US3583596A 1969-07-22 1969-07-22 Lid Expired - Lifetime US3583596A (en)

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Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883036A (en) * 1973-05-04 1975-05-13 Continental Can Co Snap-on lid
US3904072A (en) * 1973-04-30 1975-09-09 Continental Can Co Screw on lid
US3912118A (en) * 1973-03-22 1975-10-14 Stanford W Bird Container lid
US3918578A (en) * 1974-04-01 1975-11-11 Multiform Desiccant Products I Desiccant end cap
US3964635A (en) * 1973-12-26 1976-06-22 Owens-Illinois, Inc. Recessed, rim-locking container closure
US4051951A (en) * 1975-06-18 1977-10-04 Phillips Petroleum Company Package having means for providing coaxial alignment in a stack thereof
US4122973A (en) * 1977-10-14 1978-10-31 Ahern Paul B Lined containers for paint and the like
US4194645A (en) * 1978-10-10 1980-03-25 Nyman Mfg. Co. Container cover construction
US4210258A (en) * 1978-03-02 1980-07-01 Holdt J W Von Seal for plastic buckets and cans
US4275815A (en) * 1976-05-24 1981-06-30 Sweetheart Plastics, Inc. Lid
US4280635A (en) * 1978-07-27 1981-07-28 Murphy Richard W Vase cover
US4421244A (en) * 1981-09-08 1983-12-20 Amhil Enterprises Ltd. Plastic lid for containers
US4495209A (en) * 1982-06-07 1985-01-22 Whiteside Michael G Method of forming, filling and hermetically sealing containers
US4518096A (en) * 1983-05-12 1985-05-21 Maryland Cup Corporation Drink-through container lid with removable drink-through section
US4615459A (en) * 1985-01-11 1986-10-07 Solo Cup Company Lid with drinking opening
US5377860A (en) * 1993-09-14 1995-01-03 James River Corporation Of Virginia Double seal food container
US5419451A (en) * 1993-11-10 1995-05-30 Design Specialties, Inc. Stacking tray and lid assembly
US5678720A (en) * 1995-10-27 1997-10-21 Amhil Enterprises Lid for disposable containers of differing sizes
US5921282A (en) * 1997-04-16 1999-07-13 Tci Products Protective cover for plumbing fixtures
US6076559A (en) * 1997-04-16 2000-06-20 Gregory N. Castillo Protective cover for plumbing fixtures
US6168044B1 (en) * 1998-06-25 2001-01-02 S. C. Johnson Home Storage, Inc. Container having a snap fit selectively detachable lid
EP1367001A1 (en) * 2002-05-29 2003-12-03 SEDA S.p.A. Cup-shaped receptacle and lid
WO2003101855A1 (en) * 2002-05-29 2003-12-11 Seda S.P.A. Cup-shaped receptacle and lid
US20040011803A1 (en) * 2002-05-29 2004-01-22 D'amato Gianfranco Cup-shaped receptacle and lid
US20040118732A1 (en) * 2002-12-19 2004-06-24 Yun-Chung Lee Cap stacking structure of nail gun
US6789393B2 (en) 2002-02-11 2004-09-14 S.C. Johnson Home Storage, Inc. Container with pressure relief and lid and method of manufacture therefor
US20050006449A1 (en) * 2003-07-10 2005-01-13 D'amato Gianfranco Container
US20050218146A1 (en) * 2004-04-05 2005-10-06 Thissen Rafael K Food and beverage storage and serving vessel comprising an integral phase change material
US20060186012A1 (en) * 2001-01-30 2006-08-24 Seda S.P.A. Cardboard container for drinks and process therefor
US7134570B1 (en) * 2000-01-24 2006-11-14 Heath Robert C Smooth spouted disposable lid for a cup
EP1787916A1 (en) * 2005-11-18 2007-05-23 SEDA S.p.A. Lid for a cup-shaped receptacle
US20080164268A1 (en) * 2006-12-05 2008-07-10 D Amato Gianfranco Package
US20090020597A1 (en) * 2005-11-11 2009-01-22 D Amato Gianfranco Insulated cup
US20090170680A1 (en) * 2005-04-15 2009-07-02 Seda S.P.A. Insulated container, method of fabricating same and apparatus for fabricating
US20090186133A1 (en) * 2008-01-22 2009-07-23 Chris Bjork Microwaveable cup arrangement and methods
US20110089066A1 (en) * 2008-01-17 2011-04-21 William B. Kircher Cover for closing a container
US8393886B2 (en) 2005-11-14 2013-03-12 Seda S.P.A. Device for producing a stacking projection and container with same
WO2015109409A1 (en) * 2014-01-23 2015-07-30 Abdiye Abbey Lid for beverage containers
US20170036811A1 (en) * 2014-04-15 2017-02-09 Morlo Gesellschaft mit beschraenkter Haftung Closure cap for a substantially cylindrical vessel
US9730540B2 (en) 2011-04-14 2017-08-15 Berry Plastics Corporation Cup lid
US9783359B2 (en) 2005-09-08 2017-10-10 Seda S.P.A. Double-walled cup
US9814334B2 (en) 2014-10-24 2017-11-14 Berry Plastics Corporation Drink cup lid

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US3353708A (en) * 1965-03-15 1967-11-21 Sweetheart Plastics Disposable plastic article
US3384265A (en) * 1966-12-12 1968-05-21 Frank Corp Alan I W Container lid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353708A (en) * 1965-03-15 1967-11-21 Sweetheart Plastics Disposable plastic article
US3384265A (en) * 1966-12-12 1968-05-21 Frank Corp Alan I W Container lid

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912118A (en) * 1973-03-22 1975-10-14 Stanford W Bird Container lid
US3904072A (en) * 1973-04-30 1975-09-09 Continental Can Co Screw on lid
US3883036A (en) * 1973-05-04 1975-05-13 Continental Can Co Snap-on lid
US3964635A (en) * 1973-12-26 1976-06-22 Owens-Illinois, Inc. Recessed, rim-locking container closure
US3918578A (en) * 1974-04-01 1975-11-11 Multiform Desiccant Products I Desiccant end cap
US4051951A (en) * 1975-06-18 1977-10-04 Phillips Petroleum Company Package having means for providing coaxial alignment in a stack thereof
US4275815A (en) * 1976-05-24 1981-06-30 Sweetheart Plastics, Inc. Lid
US4122973A (en) * 1977-10-14 1978-10-31 Ahern Paul B Lined containers for paint and the like
US4210258A (en) * 1978-03-02 1980-07-01 Holdt J W Von Seal for plastic buckets and cans
US4280635A (en) * 1978-07-27 1981-07-28 Murphy Richard W Vase cover
US4194645A (en) * 1978-10-10 1980-03-25 Nyman Mfg. Co. Container cover construction
US4421244A (en) * 1981-09-08 1983-12-20 Amhil Enterprises Ltd. Plastic lid for containers
US4495209A (en) * 1982-06-07 1985-01-22 Whiteside Michael G Method of forming, filling and hermetically sealing containers
US4518096A (en) * 1983-05-12 1985-05-21 Maryland Cup Corporation Drink-through container lid with removable drink-through section
US4615459A (en) * 1985-01-11 1986-10-07 Solo Cup Company Lid with drinking opening
US5377860A (en) * 1993-09-14 1995-01-03 James River Corporation Of Virginia Double seal food container
US5419451A (en) * 1993-11-10 1995-05-30 Design Specialties, Inc. Stacking tray and lid assembly
US5678720A (en) * 1995-10-27 1997-10-21 Amhil Enterprises Lid for disposable containers of differing sizes
US5921282A (en) * 1997-04-16 1999-07-13 Tci Products Protective cover for plumbing fixtures
US6076559A (en) * 1997-04-16 2000-06-20 Gregory N. Castillo Protective cover for plumbing fixtures
US6168044B1 (en) * 1998-06-25 2001-01-02 S. C. Johnson Home Storage, Inc. Container having a snap fit selectively detachable lid
US7134570B1 (en) * 2000-01-24 2006-11-14 Heath Robert C Smooth spouted disposable lid for a cup
US8146796B2 (en) 2001-01-30 2012-04-03 Seda S.P.A. Cardboard container for drinks and process therefor
US20060186012A1 (en) * 2001-01-30 2006-08-24 Seda S.P.A. Cardboard container for drinks and process therefor
US6789393B2 (en) 2002-02-11 2004-09-14 S.C. Johnson Home Storage, Inc. Container with pressure relief and lid and method of manufacture therefor
EP1367001A1 (en) * 2002-05-29 2003-12-03 SEDA S.p.A. Cup-shaped receptacle and lid
EP2159161A1 (en) * 2002-05-29 2010-03-03 SEDA S.p.A. Lid
US6932234B2 (en) 2002-05-29 2005-08-23 Seda S.P.A. Cup-shaped receptacle and lid
WO2003101855A1 (en) * 2002-05-29 2003-12-11 Seda S.P.A. Cup-shaped receptacle and lid
US20040011803A1 (en) * 2002-05-29 2004-01-22 D'amato Gianfranco Cup-shaped receptacle and lid
US20040118732A1 (en) * 2002-12-19 2004-06-24 Yun-Chung Lee Cap stacking structure of nail gun
US20050006449A1 (en) * 2003-07-10 2005-01-13 D'amato Gianfranco Container
US20050218146A1 (en) * 2004-04-05 2005-10-06 Thissen Rafael K Food and beverage storage and serving vessel comprising an integral phase change material
US7431174B2 (en) * 2004-04-05 2008-10-07 Rafael K. Thissen Food and beverage storage and serving vessel comprising an integral phase change material
US20090170680A1 (en) * 2005-04-15 2009-07-02 Seda S.P.A. Insulated container, method of fabricating same and apparatus for fabricating
US8794294B2 (en) 2005-04-15 2014-08-05 Seda S.P.A. Insulated container, method of fabricating same and apparatus for fabricating
US8932428B2 (en) 2005-04-15 2015-01-13 Seda S.P.A. Insulated container, method of fabricating same and apparatus for fabricating
US20090166402A1 (en) * 2005-04-15 2009-07-02 Seda S.P.A. Insulated container, method of fabricating same and apparatus for fabricating
US8360263B2 (en) 2005-04-15 2013-01-29 Seda S.P.A. Insulated container, method of fabricating same and apparatus for fabricating
US9783359B2 (en) 2005-09-08 2017-10-10 Seda S.P.A. Double-walled cup
US20090020597A1 (en) * 2005-11-11 2009-01-22 D Amato Gianfranco Insulated cup
US8146797B2 (en) 2005-11-11 2012-04-03 Seda S.P.A. Insulated cup
US8393886B2 (en) 2005-11-14 2013-03-12 Seda S.P.A. Device for producing a stacking projection and container with same
US20090159606A1 (en) * 2005-11-18 2009-06-25 D Amato Gianfranco Lid for a cup-shaped receptacle
JP2009515787A (en) * 2005-11-18 2009-04-16 セダ エス.ピー.エイ.Seda S.P.A. Cup-shaped lid for the container
KR101005506B1 (en) * 2005-11-18 2011-01-04 세다 에스.피.에이. Lid for a cup-shaped receptacle
WO2007057123A1 (en) * 2005-11-18 2007-05-24 Seda S.P.A. Lid for a cup-shaped receptacle
EP1787916A1 (en) * 2005-11-18 2007-05-23 SEDA S.p.A. Lid for a cup-shaped receptacle
JP4914451B2 (en) * 2005-11-18 2012-04-11 セダ エス.ピー.エイ.Seda S.P.A. Cup-shaped lid for the container
CN101356097B (en) 2005-11-18 2011-02-16 赛达有限公司 Lid for a cup-shaped receptacle
US8118187B2 (en) 2005-11-18 2012-02-21 Seda S.P.A. Lid for a cup-shaped receptacle
US8490792B2 (en) 2006-12-05 2013-07-23 Seda S.P.A. Package
US20080164268A1 (en) * 2006-12-05 2008-07-10 D Amato Gianfranco Package
US8807339B2 (en) 2006-12-05 2014-08-19 Seda Spa Package
US9114916B2 (en) * 2008-01-17 2015-08-25 Huhtamaki Oyj Cover with depressions for closing a container
US20110089066A1 (en) * 2008-01-17 2011-04-21 William B. Kircher Cover for closing a container
US20090186133A1 (en) * 2008-01-22 2009-07-23 Chris Bjork Microwaveable cup arrangement and methods
US9730540B2 (en) 2011-04-14 2017-08-15 Berry Plastics Corporation Cup lid
WO2015109409A1 (en) * 2014-01-23 2015-07-30 Abdiye Abbey Lid for beverage containers
US20170036811A1 (en) * 2014-04-15 2017-02-09 Morlo Gesellschaft mit beschraenkter Haftung Closure cap for a substantially cylindrical vessel
US9814334B2 (en) 2014-10-24 2017-11-14 Berry Plastics Corporation Drink cup lid

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