DE2130205A1 - Deformable plastic cover that can be inserted into the opening of a container or the like - Google Patents

Description

PATENT LAWYERS

DR-W-SCHALK-DIPL ₁ -INcRWIRTH · DIPL.-ING. G. DANNENBERG DRV. SCHMIED-KOWARZIK · DR. P. WEI NHOLD · DR. D. GUDEL

6 FRANKFURT AM MAIN

C *. EtCHENHElMEK STRA (M «9

June 15, 1971 * RP-7848-M26

Da / Stt "....

Dart Industries Inc. Angeles, California, V.St.A.

Deformable plastic cover which can be inserted into the opening of a container or the like

The invention relates to lids for containers or the like and relates in particular to those covers that close tightly and yet can be operated easily by hand

are. I.

So far, lids for containers or the like made of materials with the desired properties of strength, Elasticity and flexibility are made and this includes lids made of compressed fiber, paper, cellulose material, Plastic as well as condensation products, either alone or in various combinations.

The invention relates to a sealing lid for containers or the like in the form of a hollow stopper, which has the elasticity and flexibility to

109853/1 2A6

. ORIGINAL INSPECTED

neither silently without a snap action or with a snap action on the edge of a container by hand or by machine can be applied and removed again by a kind of peeling off

In particular, the invention relates to .reusable Plastic lids for container openings "or other tubular openings, whereby the attachment of the lid and the Type of sealing is quick and easy to implement is and where a permanent seal is ensured · Furthermore, a cover according to the invention can be expedient be molded by pressure molding or injection molding and is therefore economical to manufacture

A lid according to the invention has some special shopping-κ®Χ © BM t ₉ od his Yerwen & faarkeit and his repeated © applicability for containers © r like "improve This includes a conical, bowl-like or concave-convex medium ¥ _andbereich? which facilitates the contraction of the Ussfangskante this wall portion, so that üer cover slightly in the opening of a Ge'fäßes, the container © like eingeseli ^ / ßlä then allowed to expand to give a reliable seal against the wall of the opening,

These and other features of the invention are apparent from the following Description of PerformiMgab®! Play based on can be seen in the drawing, and swar seigern

Fig 1 * © ine plan view of ®imm conical lid

naea fäes »Invention?

Fig. 2 is a perspective view section after the line 2-2 of Fig. 1;

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BATH ORIGINAL

Pig. 3 shows an enlarged partial section through a preferred embodiment of the seal on the circumference of the lid and a fora of a tubular opening that is suitable for receiving the lid;

Fig. 4 one of the Flg. 5 corresponding fex values Section through another preferred embodiment;

Fig. 5 is a plan view of another embodiment

shape of a lid according to the invention; Ä

6 shows a perspective section along the line 6-6 in FIG. 5I

7 shows a plan view of a bowl-like cover according to the invention;

Fig. 8 is a perspective section along the line 8-8 of Fig. 7}

9 is a plan view of a concavo-convex

Lid according to the invention; and _Λ

10 is a perspective section along line 10-10 of FIGS. 9.

In the drawing, 10 (Fig. 4) is a conventional container denotes, the opening of which is surrounded by a conical side wall, dia in a circumferential edge 11 ends. A similar container is designated 12 (Fig. 3) with the exception that the inner wall of this container is provided with an annular bead 13 on the edge part.

109853/1246

The containers 10 and 12 can also have any shape and made of any flexible, malleable, semi-rigid or rigid material such as plastic, Consist of glass or metal. When using flexible or deformable material, this is the following described lid provided with an active resistor to effect a seal while in use the seal between the lid and the wall of the container opening is made of rigid material, that the engaging with the container wall of the lid with pressure against the wall of the container opening lays.

According to the exemplary embodiments shown, the cover, generally designated 14, has a central conical, hyperboloidal or bowl-like or concavo-convex wall 16 and an upwardly directed, inverted U-shaped, circumferential channel on its circumference. The outer wall 18 delimiting the channel ends above the inner wall 20, to which it is connected by an upper wall 22 . · ■ «

It should be noted in particular that the U-shaped channel formed by the walls 18, 20 and 22 is so wide that the outer wall 18 does not come into engagement with the rim 11 of the container when the lid is on the container opening. is attached. The outer wall 18 can even be omitted or its shape changed in such a way that it practically does not contact the edge 11 of the container opening when the edge region 16 is inserted into the opening by means of contraction. In the exemplary embodiment according to FIG. 3, an annular bead 24 is also provided on the sealing side of the wall 20. When the lid 14 is inserted into the container 12, this bead 24 snaps behind a rib 15 on the latter and creates a seal around the inner wall of the container 12 below the rib 13.

109853/1246. · '

* · COPY-

ORIGINAL INSPECTED

"· 5

The rib 13 therefore acts as a stop and partially limits the upward movement of the lid 14.. ;

When putting any of the lids on a container the lid with the inverted groove is placed over the mouthpiece or the upper edge of the container rim, and approximately in the middle of the wall area 1 6 is a downward with the thumb or some other mechanical means directed pressure is exerted in order in this way a contraction of the wall 20 delimiting the inside of the channel to reach. It is therefore important to note that this locally deformable cover have a construction that allows contraction and expansion, so that the Wall 20 is displaceable together with the central wall region 16. This function is thanks to the elasticity and the elastic memory of the material used for the lid and in particular because the middle wall portion 16 has a shape derived from takes advantage of these physical properties inherent in the material.

This shape can be conical, hyperboloidal, or concave-convex be designed and can be either from a center point or from a substantially planar central area 26, as can be seen, for example, from FIGS. 5, 7 and 9. It is essential that the middle wall area 16 because of its curved or non-rectilinear shape tends to under the action of pressure to collapse, as it were, in the middle. This collapse displaces the inner wall part essentially uniform inwards. In theory, the entire central wall area 16 would be in the manner of an umbrella continue to collapse if it had no rigidity of its own and through the walls 18, 20 and 22 of the outer channel would receive a stiffener.

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As already mentioned above, the embodiment demonstrates 3 shows an outwardly directed bead 24 which extends around the circumference of the inner wall 20. FIG. 3 also shows an undercut or reverse step 28 on the container which forms the rib 13 and below which the bead 24 can seal against the inner wall of the container 12.

The distances between the inside of 4 wall 22 on the Misshapen groove and the bead 24 on the one hand and between the upper edge of the rim 11 on the container and the undercut 28, on the other hand, are preferably dimensioned so that when the cover is inserted into the container 12 in a sealing manner 14 the entire bead 24 comes to lie below and out of contact with the undercut 28. This is dam ensures the actual seal takes place between the bead 24 or - in FIG. 4 - the outside of the wall 20 and the inside wall of the container and not against the undercut 28.

The aforementioned inequality of the distances between the inside of the wall 22 and the bead 24 as well as the upper edge of the edge 11 / the undercut 28 makes compliance with precise tolerances unnecessary. Would be against it for example, to maintain a permanent seal between the bead 24 and the undercut 28, would have to be maintained ensure that there is actually a line contact between these two elements given their special shape is adhered to. In the embodiment shown, however, it is only necessary to cut the bead 24 below the undercut 28 so that the seal against a flat Part of the inner wall of the container is made.

109853/1246 original inspected

The undercut 28 is therefore used to audibly indicate when the cover is in the correct covering position slides over the container and also acts in the already sense indicated above that it holds the lid back in the opening of the container. It should be noted in this regard that the undercut can be continuous or discontinuous to give this effect and that also the undercut and the bead, if desired, in their mutual position on the container and on the lid can be swapped.

In addition, according to another shown in FIG. 4, '<| preferred embodiment, an undercut 28 is not to be provided. For example he needs Edge 11 of a typical tubular object or container 10 should not be undercut, and the bead can be omitted in some designs without impairing the effectiveness of a cover according to the invention.

To remove one of the lids from a container, the Wall 18 grasped between thumb and forefinger and easily and quickly peeled off or removed from the edge 11 of the container. peeled off, in a noiseless manner and without snap action.

The lid and the container, if the latter, can be made of glass or of a material with similar characteristics how that of the lid is made, for packing or filling a wide variety of substances find such as alcoholic or carbonated beverages, fruits, canned food, milk and dairy products, cheese, Sweets, other foods and beverages as well as pharmaceuticals, branded goods, etc.

109853/1246

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Lids of the type described above can be made by compression molding, injection molding, or other molding techniques will. The properties of the lid shape are enhanced by the characteristics of the material used. These characteristics have a rubbery, thermoplastic Composition that does not absorb moisture and is not readily wettable by water is; which are odorless and resistant to acids, alkalis, solutions and others at normal temperatures Chemicals that do not soften well below the boiling point of water; caused by mold, microorganisms and insects are not attacked; and which has flexibility and resilience with slow recovery, and feels waxy with sliding resistance. Suitable such cover materials include the polymers, for example of ethylene, which are sold under the names "Polythene" and "Polyäthylen".

109853/1246 copy

Claims (1)

Claims; Locally deformable plastic lid that is contractible and is designed to be expandable and has an elastic memory such that it has an opening of a container or other object can seal tightly, characterized in that the lid (14) of a center point or central area (26) is a conical, hyperboloidal or concavo-convex Wall area (16), which extends up to one, preferably integrally connected to it, peripheral wall (20) extends, whereby by application of pressure about the middle of the lid in the wall area (16) a Tendency to collapse with the peripheral wall (20) substantially uniformly radially inwardly shift can be generated and thus the cover (14) can easily be inserted into an opening. 2. Lid according to claim 1, characterized in that it is made by injection molding from thermoplastic material. * Lid according to Claim 1 or 2, characterized in that the peripheral wall (20) has a wall projecting on its periphery Has seal (24) and due to the blastic 109853/1246 COPY * - 21 30? Π5 city and the elastic memory of the lid (14) when the pressure is stopped, at least partially with the wall of the opening of a container (10 or 12) or the like in sealing engagement can be brought. 4. Lid according to claim 3, characterized in that the The seal (24) can be displaced in the same way as the peripheral wall (20) and when the application of pressure ceases on the lid thanks to its elasticity and elastic memory at least partially sealing with the Wall of an opening of a container or the like can be brought into engagement. Lid according to one of the preceding claims for the opening of a container or the like essentially made of rigid material, the opening of which is surrounded by a circumferential band, characterized in that, that the substantially rigid cover (14) has a central wall region (16) and a raised peripheral edge having an inner wall (20), an outer wall (18) and an upper connecting wall (22), wherein the circumferential edge (11) of the container opening in the Groove between the inner and outer wall (20 'and 18, respectively) by frictional engagement and releasably receivable and wherein the middle wall region (16) of the lid as a result conical, hyperboloidal or concave-convex formation under the action of pressure approximately in the middle tends to displace the inner V / and (20) essentially uniformly and thus its entry into the to allow opening of the container for sealing engagement therewith, with the distance of the outer Wall (18 / from the inner wall (20) is sufficient to move the inner wall (20) to the outer wall (18) 109853/1246 original inspected to hold overhanging and essentially without engagement with the edge (11) of the container (10 or 12). Patent attorney; 109853/1246 Blank page