DE1782319A1 - Dispensing device for liquids and pasty materials from a container - Google Patents

Description

DH. ING. ERNST MAIER

PATENT ADVOCATE

8 MUNICH 5

iirvATiiiii. t · niiioi »snail,» si · «

A 28268 August 14, 1968

EM / Ml / My

DIAMOND INTERNATIONAL CORPORATION, 733 Third
Avenue, New York, NY / V. St. A.

Dispensing device for liquids and pasty materials

from a container

The invention relates to a dispensing device
for liquids and pasty masses from an airtight container which can be compressed by atmospheric pressure and which is inserted into a rigid housing.

Such devices are known, for example from
U.S. Patent 3,228,334. It is then known
use an ordinary piston pump to dispense the liquid or paste from the collapsible container. Such a collapsible container can

109884/0033

SparkaiH Schrambere Bankhaui M * rcfc, Finck & Co., Munich, No. 25464 Bankhau H. Aufhäuiar, Munich, No. 53597 Poilichecki Munich 153661 T «l * grammadr * 3i ·! Patentwnior

be inserted into a rigid housing, which then absorbs the vertical pressure that occurs during pumping. It is particularly important in such a device, a completely tight seal between the Container and the closure, because if air gets into the container, even if only very little, the pump either becomes completely unable to pump or at least loses considerable efficiency when pumping relatively high viscosity liquids and pastes.

With respect to the delivery of various materials, it is often desirable to have a closure that after the one-time placement on the container without visible Damage cannot be removed again, so that an emptied container without the knowledge of the consumer cannot be refilled or its contents can be replaced by a replacement product.

With the invention, a closure and the necessary adaptations to the container are created to closure and to be able to use containers together in the manner indicated above. The closure and the required Adjustments to the container are mainly for a dispenser for liquids and pastes

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introducing genar ^. Jen Art definitely, but you can too, in other applications where no dispensing pumps or the like occur.

According to an important feature of the invention the closure on the container neck by means of snap beads attached to both parts, which are brought into connection with each other by the fact that the closure with the help of is pulled axially onto the container by threaded pieces. The snap beads and threaded pieces are arranged so that the threads taper out of engagement after the snap beads have grabbed one after the other. By means of corresponding inclined surfaces, the beads themselves press against one another and hold the closure tightly tight on the neck of the container. Separate the cooperating sloping surfaces the threaded pieces raised from one another, so that it is not possible to unscrew the closure again. Around To achieve the goal, it is sufficient that one of the two parts is deformable in the radial direction.

If the container neck is roughly flexible, further important properties can be achieved according to the invention will. The closure can then have, for example, a stopper which protrudes into the neck opening of the container,

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and the upper end of the container neck between the opening edge and the snap bead then tapers upwards tapering, so that a pressure from the closure in the axial direction on the neck end of this radially inward presses against the stopper. In addition, the closure presses radially from the outside on the container neck, whereby the upper portion of the neck is stretched somewhat and consequently presses resiliently against the closure.

Using the following description of an exemplary embodiment In connection with the drawing, the invention is more clearly apparent. Show it:

Pig. 1 shows a vertical longitudinal section through a preferred embodiment of the invention, in which a pump is inserted into the container;

Pig. 2 on a smaller scale the container of FIG. 1, of which the closure and the Pump removed, in side view; and

3 shows an enlarged detail of the connection point of container neck and cap in section.

The dispenser consists of an inner container made of a flexible plastic material such as polyethylene, which can have a hull 10 of any shape,

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placed on the tubular neck 12 of circular cross-section is, the upper end of which is the container outlet opening 14, which preferably protrudes from axially Sealing rings 15 is surrounded, which at a radial distance are arranged concentrically to one another so that they can accommodate a sealing ring 16 between them, which is integrally formed on the top surface 18 of a closure cap designated as a whole by 20. This cap has also a jacket 22 in which an internal thread is incorporated, which corresponds to the thread on the container neck 12 in a manner to be described in more detail later.

In the preferred embodiment of the invention, the container 10 is collapsible. It is therefore It is advantageous to use it in a rigid G housing 24, the top cover of which is covered by the closure cap 20 is formed in conjunction with a bowl-like widening 24 made of vinyl or a similarly rigid one Plastic material.

From Fig. 1 it can be seen that the collapsible container 10 is connected to the closure cap is and in the container 24 »hanging on the cap,

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ORIGINAL!? ■ *: "CICTED

worn v / ird. To the closure with the housing body 24 to bring in connection, is on the cap 20 itself preferably in one piece a bowl-shaped Formed widening 26, the end of which is formed by a known snap ring 28, the behind a matching snap bead 30, which runs around the upper edge of the housing body 24, cooperates. One down facing surface 32 on the bowl-shaped extension 26 comes to rest on the upper edge of the Housing body 24 'so that the closure cap and the container itself are carried by the housing 24 at this point will.

In the present example, liquid is to be pumped out of the container 10 by means of a pump known per se, which has a stationary pump cylinder 34 which is preferably formed in one piece with the top surface 18 of the container. The pump cylinder 34 is open at the top through the container cover surface and can thus accommodate a pump piston 36 which has corresponding passage channels (not shown) which are connected to the dispensing spout 38 at the outer end of the piston 36. The piston can be spring-loaded in a known manner and with pressure

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the hand on the palm rest 40 can be operated.

To prevent the pump from leaking out of the container content or entry of air between the pump piston and to seal the cylinder, it may be necessary to use an upwardly directed internal thread on the cap equipped neck piece 42, the internal thread of which with an external thread on the pump body 44 cooperates in the usual way. By screwing the pump body 44 into the internally threaded one Neck piece 42 becomes a tight seal as much as possible 46 scored. The pump body 44 makes sealing contact with a support shoulder 48 in the pump cylinder.

If the contents of the container are to be pumped out with the aid of the pump, the pump body becomes 44 rotated so far that it is free of the internal thread of the neck piece 42, whereupon it is then and reciprocating the pump piston can challenge the desired amount from the container.

The container 1C is under atmospheric pressure,
which can freely reach the container through the outer housing 24 through an opening 50 in its bottom. Will, so

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the contents of the container are pumped out of the container, so atmospheric pressure will compress the container around the pump cylinder 34. So now the container cannot obstruct the entry into the pump cylinder when it is folded up, becomes the pump cylinder advantageously provided with a number of slots 52 which extend downwards from the lower end thereof extend and the upper end slightly below the bottom dead center of the pump piston in the cylinder is located.

The arrangement described so far can already be found in US Pat. No. 3,288,334, in which a Air entry into the container and exit of the container contents through the closure through a corresponding seal is achieved between the container and the closure parts. Although the invention is advantageous in this

is not used in an arrangement, it is nevertheless

restricts.

The invention not only creates an effective seal, but also ensures that the closure can be placed very easily on the container. Another feature of the invention is that

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that the closure is fixed in such a way on the container is that it is no longer held removable after the one-time application and only removed if various parts are damaged or destroyed in the process. So a manufacturer who e.inen using such a container for the sale of its products has the security that the container cannot be replenished with substitutes without the consumer being aware of it.

The particular connection between the closure cap and the container will now be described in detail. In the pig. 1 and 2 it can be seen that the container neck 12 has a radially protruding snap bead 56 from its outside close to the neck end 14, while the closure cap 22 has a radially inwardly protruding snap bead 58 which cooperates with the snap bead 56. Both snap beads have on their highest elevation an annular ridge 56 ', 58 ¹ J which lie in a plane perpendicular to the axis, and the smallest inside diameter of the snap bead 58 is smaller than the largest outside diameter of the snap bead 56 on the container neck.

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In addition, threaded sections 60, 62 are attached both on the inside of the container cap 22 and on the outside of the container neck 12 below these snap beads. These threaded pieces are so arranged and dimensioned with respect to their axial position to one another that they are only in engagement with one another while the cap is being screwed onto the container neck until the two comb sections 56 ', 58 ^{f of} the snap-on beads 56, 58 are in the same plane lie. As soon as the outer snap bead has slid over the inner one, the threads 60 and 62 disengage.

The thread sections preferably represent parts of several thread turns with the same pitch in the same Height so that they by their concentric arrangement with relative rotation of the container and the closure cap generate a uniform axial force, which prevents the two parts from tilting against each other will.

It has been stated earlier that the container 10 including the neck 12 is preferably consists of a flexible, resilient material that is compressible in the radial direction,

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so that the very ppbulst 58 of the closure over the Snap bead 56 on the neck of the container can be pressed over can.

In order to promote such a radial compression of the container neck, so that the snap-on beads 56 and 58 can jump over one another when the closure is put on, one of the snap-on beads, in the example shown that of the closure cap, is given a conical inclined surface 58a, which extends below the ridge 58 'represents a conical surface that widens downwards. If the closure cap is screwed onto the container neck, this conical inclined surface 58a presses the snap bead 56 radially inward and, in the present example, presses the container neck at the base of the conical surface 56a until the snap bead jumps over one another.

At this moment the threaded pieces are 60 screwed through the threaded pieces 62 on the threaded neck and know how to solve them, and the radial The collapsed part of the container neck is now free so that it can expand again.

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To produce an axial distance between the threads that prevents the cap can later be unscrewed from the container again, receives one of the snap beads, in the present example the bead 58 on the cap, a conical inclined surface 58b, which, seen in the axial direction upwards, from Ridge 58 · widens and on that of the snap bead 56 after crossing the ridge 58 'during the subsequent Expanding slides, so that thereby the container cap is further pulled up onto the container neck after the threads are already out of engagement. The inclination of this inclined surface is preferred 58b sufficiently steep, so that thereby the container closure with sufficient security on the container is being held.

It should also be mentioned that the inner diameter of the closure 20 above the bead 58 is somewhat smaller is held as the outer diameter of the snap bead 56 on the container neck, so that even after sliding over each other the snap beads 56 and 58 at the point of the bead 56, a radial force prevails. In this way it is achieved that the container neck is somewhat elongated while sealing against the underside

10 988 4/0031

Deokfläclie presses the fastener while at the same time the closure cap is pressed onto the container neck by the vertical component of the force on the inclined surface and creates a tight seal.

From the drawing it can also be seen that above the snap bead 56 is a conical surface 56a, which increases in diameter when viewed downwards and which represents the upper side of the bead 56.

An annular, rigid stopper 66 is located on the underside of the cover surface of the closure from, which finally fits into the container opening 14. Since the upper end of the container neck is conical, is due to an axial pressure force between the top surface 18 of the closure and the upper end of the container neck generates a radially inwardly acting force which tries to narrow the container opening H so that it rests firmly against the plug radially. The plug in turn presses against the by the reaction force radially inwardly curved container neck and thus generates an axial force of the container neck against the top surface 18 of the clasp. The stopper prevents the flexible plastic neck from becoming

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H -

The force exerted is fluidly deformed or deformed over time the elastic resilience weakens.

The method of operation of the invention is already clear from the preceding description. Of the Closure with the attached pump is normally inserted into the filled container before it is in the housing 24 is used. The pump is inserted down into the neck of the container while the closure 20 is placed axially on the container neck 12 until the threaded pieces 60 and 62 engage with one another. By rotating the container 10 with respect to the closure 20, the snap bead 58 of the closure becomes straight pulled so far out onto the container that it jumps over the ridge of the snap bead 56 on the container neck, whereby the container neck in the plane of the snap bead 56 is compressed radially; at this moment the threaded pieces are also completely messed up screwed through. Now the effect of the upper inclined surface 58b occurs, on which the snap bead 56 as a result the radial expansion force of the container neck slides in and pulls the closure further onto the container neck down, so that the threaded sections 60 and 62 come out of engagement and also the top surface

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before 18 of the closure cap sealingly on the upper edge of the Belialterhalses is pulled.

In the jumped-in state of the snap-on bulges 56 uxid 58, the snap-on bulge 56 is continuously pushed by the lock held under radial compressive force. Because of the conical shape of the upper end of the container neck this radial force generates an axial component with which the container neck lies against the top surface of the closure pushes, and also a radially inward component that connects the neck opening 14 at its upper end is compressed and forms a tight seal around the plug 66.

In addition, the plug 66 forms a kind of support in this arrangement for the top edge of the container, which the radially inward force caused by the pressure of the top surface 18 of the closure on the container neck arises, absorbs, so that the plastic material of the container neck can not be permanently cold deformed.

After the closure together with the pump is placed on the container 10, the container is then placed in the relatively stiff housing 24 used and the un-

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edge of the shoulder of the achus-shaped part 26 of the The closure cap is pressed onto the container housing 24 in the manner of a snap-in connection.

The pump can then be used in the usual manner to dispense the contents of the container from the container 10. In order to put the pump into operation, it is first necessary to provide the pump piston with its external thread Unscrew section 44 from the internally threaded base 42 of the closure cap, whereupon the piston then can be operated by intermittent pinger pressure on the palm support surface 40, so that the container contents comes out of the beak 38.

If the contents are removed from the container, the container is through the atmospheric pressure, which is about the opening 50 in the housing 24 has access, compressed. It is not necessary that the pump have a Has inlet opening near the container bottom, since the container is compressed around the pump and so that its contents enter the pump cylinder through the inlet slots 52 and push in the open lower end of the pump cylinder.

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Through the description of a preferred embodiment According to the invention, the invention is in no way restricted to this example. Rather, stand that Numerous modifications are available to those skilled in the art without departing from the scope of the invention.

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Claims (12)

Claims 1. Dispensing device for liquids and pasty masses from a container, characterized in that the container has an annular neck (12) made of resiliently deformable material with a circular opening on the upper edge (H) and a closure (20) has a cover surface (18) which extends axially onto the upper end of the container neck (12) is placed, and a subsequent jacket (22) which surrounds the container neck (12), wherein the The upper end of the neck (12) is designed as a truncated cone, the base of which is radially over the adjoining neck section protrudes as a snap bead (56) that a plug (6 $ from the top surface (18) of the closure (20), with Neck opening (H) closing tightly, hanging down and a radially inwardly directed snap bead (58) in the closure jacket (22) is integrally formed, the inner diameter of which is smaller is than the outer diameter of the snap bead (56) on the container neck (12), so that the snap bead (56) on The container neck is compressed when the cap (20) is pushed over and through below the beaded edge (56) the extension remains in contact with the cap, the top surface (18) from the bead edge (58) of the Verohlusses has such an axial distance that it is against the 109884/0033 The upper edge of the container shark presses and the neck seals rests radially against the plug (66). 2. Performing according to claim 1, characterized gekennzeiohnet, that the -casis of the truncated cone-shaped section has a downwardly facing, annular inclined surface of conical shape with which it connects with the bead edge of the closure (20) comes into contact, so that the top surface (16) of the closure against the upper edge of the Neck (12) is pulled due to the radial expansion of the beaded edge (56) on the container neck. 3. Apparatus according to claim 2, characterized by that on the container neck (12) and on the cap casing (22) below the snap beads (56,58) with one another cooperating thread sections (6C, 62) attached which come into engagement with one another by rotating the closure cap (20), whereby the snap bead (58) on the cap (2C) is pressed over the base portion, and that the threaded portions (6C, 62) are disengaged advised when the snap bulge (56) on the container neck (12) with the annular inclined surface of the neck in .Contact is, where the radial extension of the base '' cut the neck of the container (12) after the snap 109884/0033 bead (58) of the closure cap (20) has slid over, pulls the closure in the axial direction onto the neck and thereby pulls the threaded sections (60,62) in the axial direction separates from each other. 4. Apparatus according to claim 3> characterized in that that the threaded sections (60,62) sections of a multi-start threads of the same pitch, each comprising only a fraction of the circumference, and the individual Threaded sections engage one another at the same time at a plurality of circumferential sections, so that a Tilting between the container and the closure is avoided. 5. The device according to claim 1, characterized by telescopically interlocking sections on the container and on the cap that is held by the snap beads (56,58) have a distance. 6. Apparatus according to claim 5, characterized in that the telescopically sliding sections have a substantially larger diameter than the snap beads (56,58). 7. Dispensing device for liquids and pasty masses from a container, characterized in that 109884/0033 the container has an annular neck (12), the upper end of which is the outlet opening, and an axially attachable and the upper end of the neck (12) tightly closing closure (20) is provided, one of the elements (12, 20) being resilient deformable material is that the neck (12) has a radially outwardly protruding beaded edge (56) and the closure (20) has a jacket (22) surrounding the neck, on which a radially inwardly projecting beaded edge (58) is formed, that both beaded edges (56,58) have burr edges (56 ^f , 58 ^f ) located in planes of diameter, the bead edge (58) on the closure cap (20) normally having a significantly smaller burr diameter than the burr diameter of the bead edge (56) on the container neck (12), that both on the container neck (12) and on the cap shell (22) cooperating threaded sections - (60,62) below the 7 / ulstränder (56,58) are provided, which during the screwing of the container cap (20) on the Be container neck (12) are in engagement with each other until the ridges (56 ', 58 ·) have slid over each other, and then immediately disengage so that one of the bead edges (58) has a downwardly widening conical inclined surface as a contact surface for the second Bead edge (56) around the radially deformable element 109834/0033 when screwing the container cap (20) onto the container neck (12) to deform that one of the bead edges (58) has an axially upwardly directed, widening conical inclined surface with which the other edge of the volute (56) after the ridges (56 ·, 58 ') slide over one another and the threaded sections (60,62) have been separated in Comes into contact, and that on the closure cap (20) means for axial sealing on the container neck and the limitation the downward movement of the closure cap (20) are provided before the deformable element reaches its dimensions resumed in a relaxed state. 8. Apparatus according to claim 7> characterized in that that the means for sealing in the axial direction against the container neck (12) the top surface (18) of the closure cap is. 9. Apparatus according to claim 7, - characterized in that that the container (10) and the closure (20) have telescopically sliding sections which at a distance below the snap beads (56,58) and have a much larger diameter. 10. The device according to claim 7, characterized in that the threaded sections of a multi-turn 109884/0033 gigen, coaxial thread of the same pitch are the occupy only a fraction of the circumference, and that the threads engage simultaneously at several circumferential points, so that a tilting of the cap your container is avoided. 11, device according to claim 7, characterized in that α ate the container (10) made of resiliently deformable material and its container neck (12) is held by the closure cap (20) under radial compressive force, whereby a resilient axial sealing force presses against the closure cap, 12. The device according to claim 7, characterized in that that the container is made of resiliently deformable material, the beaded edge (5B) on the cap shell (22) according to has at the top widening conical inclined surface (58b), with the help of which the closure (20) through the partially relaxation of the snap bead (56) on the container neck (12) after jumping over the burrs (56 ', 58') the neck is pulled, the inner diameter of the cap shell (22) is greater in connection with the snap bead (58) is smaller than the diameter of the ridge (58) of the snap bead than the ridge diameter of the snap 109884/0033 bead (56) on the container neck, so that the snap bead (56) remains radially compressed on the container neck and and the upper end of the container neck (12) resiliently against it the top surface (18) of the closure cap (20) is pressed. 13. Device according to claim 7, characterized in that the upper end of the neck is essentially a truncated cone has a shaped shape with the container opening (14) decreasing diameter and the diameter at the Container opening is much smaller than the outer diameter of the snap bead (56), and that on the Closure cap, a stopper (66) is formed which protrudes into the container opening (14), the resilient Axial force of the container neck (12) against the top surface (18) of the closure cap together with the conical shape of the upper end of the container neck sealing the inner surface of the container neck with radial force pushes the stopper. H. Dispensing device for liquids and pasty masses from a container, characterized in that the container has an annular half made of resiliently deformable Material with a circular discharge opening (H) 109884/0033 having at its upper end and a closure cap (20) made of stiffer material is present with a Top surface (18) for the axial abutment of the upper end of the container neck (12) and with a surrounding the container neck Cap shell (22) that on the container neck a radially protruding snap bead (56), surrounding this, is formed, the upper end of the container neck (12) substantially truncated cone shape with from above downward increasing diameter, which is not larger than the diameter of the snap bead (56), has, an inwardly protruding snap bead (58) is formed in the cap shell (22), which one after has a conical inclined surface that widens at the bottom for the radial compression of the snap bead (56) on the container neck (12) and thereby axially lengthening the end part of the container neck, while the closure cap is pushed onto the container neck, a plug (66) is attached to the top surface (18), which is shown in the neck opening (14) protrudes, and one of the snap-on beads has an upwardly widening conical inclined surface (58b) on which the. other snap bead (56) slides off, whereby the top surface (18) of the TKerschlußkappe (20) is resiliently pressed axially against the container neck end, since the bead edge (56) extends radially tends to expand after the ridges (56 ·, 58 ') 109884/0033 have passed each other, and whereby the opening edge (H) is pressed radially against the plug (66). 109884/0033