AU631778B2 - Closure - Google Patents

Abstract

A closure of plastics material for containers for receiving and delivering liquids or pastes. The closure has a retractable turnspout. A plug for closing the container mouth has on its base an eccentrically disposed bush which rotatably carries a turret. Together with a transversely projecting tube the turret forms the turnspout. A liquid passage leads through the tube and turret and through the bush. Between the tube and bush a tap is formed to shut off the liquid passage. A cap engages over the plug and container mouth and is rotatable with respect to the plug. By virtue of rotation of the cap the tube is passed outwardly through a lateral opening in the cap and withdrawn again when rotated in the opposite direction. A shield upstanding from the plug base serves on the one hand to close the lateral opening in the cap, when in the closed position, and on the other hand to seal the outer end of the turnspout. A wall on the cap base has engaging edges for pivoting the tube out and in. For the purpose of further sealing, the turret can have in its interior a concentric hollow cylinder with a longitudinal slot for the passage of liquid and seal with respect to the wall of the bush when the tube is pivoted in. A tamper indicator can be produced by a tongue which can be broken away and which sits in the lateral opening in the cap or closely outside this opening.

Description

ii ii AU-Al-20862/88 PCT WELTORGANISATION FOR GEISTIGES EIGENTUM PCI Internationales Biro INTERNATIONALE ANMELDUNG VEROFFENTLICHT NACH DEM VERTRAG OBER DIE INTERNATIONALE ZUSAMMENARBEIT AUF DEM GEBIET DES PATENTWESENS (PCT) (51) Internationale Patentklassiflkation 4 (11) Internationale Veriffentlichungsnummer: WO 89/ 00958 47/26 Al (43) Internationales Verdffentlichungsdatum: 9. Februar 1989 (09.02.89) (21) Internationales Aktenzeich (22) Internationales Anmeldeda (31) Priorititsaktenzeichen: (32) Prioritiitsdaten: (33) Prioritiitslander: en: PCT/EP88/00643 .tum: 16. Juli 1988 (16.07.88) 077,909 87119298.5 (EP) 27. Juli 1987 (27.07.87) 29. Dezember 1987 (29.12.87)

US

AT, usw.

(74) Anwiilte: SCHROETER, Helmut; Bocksgasse 49, (DE) usw.

(81) Bestimmungsstaaten: AT, AU, BG, BR, DK, FI, HU, JP, KR, LK, LU, NO, RO, SU, US.

Veroffentlicht Mit internatio lemRcherchenb t. 7 a3I !77 8 20 APR 1g9 S.AUSTRALAN I (71) Anmelder (fiir alle Bestimmungsstaaten ausser A U US): ZELLER PLASTIK KOEHN, GRABNER CO.

'DE/DE]; Barlstrasse 46, D-5583 Zell (DE).

SECTION 113 DIRECTION SEE FOLIO I C i S\\it-C fu' IC,.E yj-<2 A

DIRECTED

PeoEOLAL~ ~fAES"-I C~ \CJ2A..c2 <t ~t~vvrt i: CLOSURE FOR CONTAINERS WITH RETRACTABLE SPOUT (54) Bezeichnung: BEHALTERVERSCHLUSS MIT EINZIEHBARER SCHWENKTOLLE I 26 6 9b 40 3a 9a 5 2b 13 6 16 17 (57) Abstract A plastic closure for containers for holding and dispensing liquids or pastes has a retractable spout A stopper for closing the mouth of the container has on its base an eccentric connecting sleeve fitted with a rotary cap The cap, together with a small tranverse tube forms the retractable Spout. A fluid channel passes through the small tube and cap and through the connecting sleeve. A tap for closing the fluid channel is located between the small tube and the connecting sleeve. The stopper and the mouth of the container are covered by a lid which can be turned with respect to the stopper. When the lid is turned, the small tube is extruded through a side opening in the lid, and when the lid is turned in the reverse direction, the small tube is retracted through the side opening, A vertical diaphragm on the base of the stoper (5a) serves, on the one hand, to close the side opening in the lid in the closed position and, on the other hand, to close the outer end of the retractable spout. A wall (26) arranged on the base of the lid (2a) has driving edges (39 and for extruding or retracting the small tube To ensure a tighter seal, the lid (9b) can have a hollow internal cylinder (42) with a longitudinal slit (44) for the passage of fluid and can seal off.the passage against the wall of the connecting sleeve when the small tube is retracted. A tear-off tab (46, 50) arranged in the side opening of the lid or which seals this opening on the outside can provide a tamperproof seal.

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j: i i.i i :il- JBER DIE NS (PCT) ?r WO 89/ 00958 -bruar 1989 (09.02.89) Bocksgasse 49, (DE) 3, BR, DK, Fl, HU,

US.

7,7 8 989

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1:; -1- CONTAINER CLOSURE WITH A RETRACTABLE TURNSPOUT 1 i~Jz~P~L(~ r r o The invention relates to a closure of plastics material on a container (particularly a bottle) which serves to receive and deliver liquids or pastes. The closure of this container has- a retractable turnspout and also the components referred to in the precharacterising portion of Claim 1. The terms defined in the claims are also used in the following detailed statement.

Such a closure is disclosed in US-A-3847313. The turnspout mentioned therein is rotatable about an eccentric bush. The tube of the turnspout can be moved outwardly or inwardly by way of a pivotal movement. In the one extreme position it disappears completely within an actuating cap. This is the closed position. In the other extreme position it projects to a maximum extent out of a lateral opening in the cap.

This is the use position in which liquid can be delivered (poured or squirted) through the turnspout.

A valve in the liquid passage to the turnspout is so actuated that it is open in the use position and closed in the closed position. In the known closure an additional movement of the turnspout is necessary, namely parallel to the closure axis, to actuate the valve so that a plug, which is attached within the tube on the upper wall, can engage in a bush and close it and vice versa. A helical ramp on the plug base and guide curves extending inwardly from the cap base are necessary for this additional upward and downward movement of the turnspout. A relatively large number of components are thus necessary for the actuation of the turnspout in two directions which results in complicated \injection moulded components.

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spout A stopper (5) i a rotary cap The through the small tube the small tube and the med with respect to the d when the lid is turned n on the base of the d, on the other hand, to riving edges (39 and 40) )W internal cylinder (42) of the connecting sleeve e lid or which seals this iit 81 i 'nowI 11111 II I III~F I l 2 In addition to the inevitable friction due to the rotary movement of the cap and tube when actuating the turnspout, friction in the axial direction (tube against bush) and friction on the helical ramp also occur so that the closure can only be actuated with the application of considerable force and cannot be actuated at all by frail people.

The height matching of the components which is necessary for the pressing in and turning is difficult due to the great number of the height tolerances which occur. In this connection there are four components to be taken account of, namely the cap, tube, plug and mouth.

US-A-3371827 discloses another container closure with a turnspout in which the turnspout needs only to be displaced in the direction of 'rotation. In one embodiment thereof (Figures 9 to 11) the free outer end of the turnspout may also be shut off, in fact by the actuating cap itself. In the closed position, not only the outer end of the tube but also its inner end are closed off. The tube itself is i angled and its lower limb in the use position passes through the base of the closure plug and is pivotable in this base.

A projection attached to the inner surface of the cap base serves to move the tube when the cap is rotated.

This has the following disadvantages: The bent tube can be manufactured integrally of plastics material, only with the aid of a complicated mould, in an injection moulding process.

When the closure plug is pressed in and the cap screwed on the cap wall is deformed and thus unsuitable for sealing the outer end of the tube.

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-3 The cap impedes the pivotal movement of the tube even at positions where no sealing is necessary, namely during the major portion of the pivotal movement.

A feed pipe for liquid cannot be fitted.

According to the present invention there is provided a container closure of plastics material with a retractable turnspout and the following components: a) a closure plug which may be rotationally fixedly inserted in the container mouth; b) an upwardly extending bush which is eccentrically arranged on the plug base and whose internal passage passesd through the plug base; C) a turret which sealingly engages over the bush and is rotatable on it and which together with a tube projecting from it transverse to its axis of rotation forms the turnspout, d) a continuous liquid passage in the turret and tube; e) a sealing device between the bush and turret; f) a cap which lockingly engages over the closure plug and the container mouth in the axial direction, is rotatable with respect to the closure plug and has a lateral opening through which the tube passes in its operational position and one edge of which serves to move the tube out of the operational position; g) a shield upstanding from the plug floor for closing the lateral opening when the turnspout is pivoted in; h) a wall which is on the cap base, projects towards the plug base and extends concentrically to the cap axis and having a first engaging edge which peripherally limits it for pivoting the tube out into its operational position; characterised by the following features: 1~ a longitudinal slot in the wall of the bush together with the inward end of the liquid 1 1 I I 411/18393-H I I -4 the tube Snamely :here is 1 with a 3: fixedly Lch is ase and the plug the bush r with a its axis -ret and rret; closure e axial to the through rational to move oor for arnspout projects trically ing edge .ing the i r passage of the tube forms a tap; j) the shield is part-cylindrical, has on its inner wall a projection as an abutment for the free end of the tube and thus serves to limit the 5 inward pivotal movement of the tube and also to seal the free end of the tube when it has been pivoted in; k) the wall projecting from the cap base towards the plug base has the shape, with the exception 10 of an interruption, of a closed cylindrical wall whose outer diameter is somewhat smaller than the inner diameter of the shield; and 1) a second engaging edge provided on the wall for pivoting the tube in towards the end of the 15 inward pivotal movement until it is behind the shield in its defined storage position.

The result is substantially simpler injection moulded components for actuating the turnspout by comparison with US-A-3847313 since the turnspout need 20 only be moved by the cap in the pivotal direction whilst components for raising and pressing down the turnspout are superfluous. Consequently, substantially less friction arises when actuating the closure in accordance with the invention.

25 By comparison with US-A-3371827 the shield in accordance with the invention attached to the plug offers the advantage principally that the free end of the tube is sealed perfectly in the closed position whilst in accordance with this prior publication it only engages the cap without being sealed. A further advantage resides in that the fit between the outer end of the tube and the shield is not changed when the container is closed, that is to say a perfect sealing function is maintained.

In accordance with a preferred embodiment the shield, which serves to close the lateral opening in the cap and to seal the outer end of the tube may be additionally used to limit the rotation of the cap in at

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~bzi~lll~)a~i C "I A 4A least one direction of rotation.

In the opening direction this purpose can be served in accordance with another preferred embodiment by one edge of the shield together with a projection on the interior of the cap wall.

A tamper indicator may be provided in accordance with a further preferred embodiment and this may be so constructed that the cap and tongue which may be broken away and which are necessary for this purpose may be manufactured in a simply constructed injection moulding tool.

In accordance with another preferred embodiment the plug can be positioned in the direction of rotation when inserted into the mouth of the container, e.g. can be aligned with respect to a bottle label.

In accordance with a further preferred embodiment in the closure position, the cap can be locked with respect to a rib provided at the outside of the container mouth.

411/18393-H ji~ WO 89/00958 PCT/EP8/00643 i;i'l" ;r can be Liment by n on the cordance Ly be so e broken may be moulding bodiment rotation a.g. can referred locked of the Exemplary embodiments with further features of the invention will be described below with reference to the drawings.

Figure 1 Figure 2 is a perspective view of a closure with a retractable turnspout in accordance with the invention mounted on a container.

is an exploded view on an enlarged scale of the container and the components of the closure.

is an axial section through the plug of the closure shown in the middle of Figure 2.

Figure .3 Figure 4 Figure 5 is a plan view of the plug.

Figure 6 Figure 7 Figure 8 is a side elevation of the plug with the turnspout on a reduced scale by comparison with Figures 3 and 4.

is a view from below of ti-ecap illustrated in Figure 2.

is an axial sectional view of the cap on the plane VII-VII in Figure 6.

is a partial axial section through the cap on the plane VITI-VITI in Figure 6.

is a longitudinal section through the container mouth, plug, cap and the turnspout which has been completely pivoted out and thus shows the use position.

is a sectional view on the plane X-X in Figure 9, that is to say viewed from above towards the plug base; the parts alsobeing in the use position.

Figure 9 Figure 10

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i.i i T/EP88/00643 wo 89/00958.

PCT/EP88/00643 o211 -6 igs.

Figures 11 to 14 are views similar to Figure 10 and show the relative positions of the components in differing rotary positions of the cap and the turnspout.

with a iith the Figure 15 is a longitudinal sectional view of a modified embodiment of a turnspout.

e of ce.

the Figure 16 is a plan view of this turnspout.

r of the turnspout 'igures 3

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Figure 17 Figure 18 is a partial sectional view on the plane XVII in Figure is a perspective view of another embodiment of the bush provided on the plug.

rated in the plane ip on the Figures 19 and 20 are aperspective view and a partial longitudirial sectional view through the cap, respectively, of a tamper-proof closure.

Figures 21 and 22 are similar views of another version of a tamper-proof closure.

Terms such as "above" and "below" refer to the position of the parts in a vertically standing mouth of an upright container. Terms such as "axial" refer to the axes of the mouth and of the plug.

All components of the container closure are manufactured from plastic material.

Figures 1 to 4 show a closure 1 with a turnspout in accordance with the invention. Rotatably secured toa container 4 is a cap 2 with cap base 2a and a cap wall 2b in \which there is a lateral opening 3. The container is container has been the use Figure 9, the plug ition.

D LO IV1 I li-- I PCT/EP88/00643 T/EP88/00643 WO 89/00958 ;.r~ii I -p~ -7 preferably elastically flexible.

nd show the n differing nspout.

a modified mfe XVII in nent of the i:.

:ial t he longicapI Figures 3 and 4 and the middle of Figure 2 show a plug with plug base 5a and a plug wall 5b extending upwardly therefrom for insertion of the plug into the container mouth The plug is integrally injection moulded with a bush 6 of relatively hard plastics material. The bush is situated substantially eccentrically and extends parallel to the plug axis. The lower end of the bush 6 is surrounded by an annular groove 5c. On its upwardly directed side the bush has a-longitudinal slot 7 which is parallel to the axis and which merges into a liquid passage 6a in the interior of the bush. The upper end of the bush can also be closed, as is shown on a bush 6' in Figure 18.

Figure 2 also shows the turnspout which is designated in its entirety as 9 and which has a cap-like turret 9b, on which there is a radial tube 9a whose liquid passage 9c is in communication with the interior of the turret. After assembly, the turret sits on the bush 6, as shown in Figure 9. It fits in a rotatable and sealing manner over the bush.

When the tube 9a is pivoted fully outwardly, its liquid passage 9c is in communication through the longitudinal slot 7 with the liquid passage 6a in the bush 6. The longitudinal slot has the effect of a tap; when the tube 9a is pivoted inwardly (Figures 11 to 14) this connection is broken and when the tube is completely pivoted out (Figure it is open.

On the plug base there is a shield 8 which is constructed as a part-cylindrical wall integral with the plug and is concentric with the plug axis 5d (Figure It serves to close the lateral opening 3 in the cap in the closed position, as shown in Figure 14. The shield also has other functions: it has an inwardly directed abutment rib 8a which !rsion of a I osition of in upright xes of the nufactured nspout in ured to a wall 2b in tainer is <i) 1-- ,T/EP88/00643 WO 89/00958 PCT/EP88/00643 I, 1 1 8 a plug 5 upwardly iner mouth i a bush 6 situated 3 the plug ded by an the bush a axis and Lor of the ;ed, as is *r Led in its on which 9c is in After in Figure the bush.

ts liquid linal slot longituube 9a is action is it (Figure is parallel to the axis and which in the closed position serves as an abutment for the outer end of the tube (Figure 14). The shield also serves in this position to seal the outer end of the tube 9a.

The edge of the plug base 5a rests on a lip 11 at the top of the container mouth 10. A bush 13 projects downwardly from the plug base 5a. A feed tube can, if required, be pushed onto it for the liquid which is to be delivered.

Figure' 6 shows the cap 2 from below on an enlarged scale.

One can see the lateral opening 3 in the cap wall 2b. Lower snap lugs 17 serve to retain the cap 2 on the container mouth 10. They engage below a snap ring 16 on the container mouth and fix the cap against rotation on the container and secure against axial movements. Upper snap lugs 18 serve to fix the plug 5 with the turnspout 9 in position within the cap 2. After its engagement the plug sits rotationally fixed in the container mouth and thus does not move when the cap 2 rotates. By virtue of the wall 26 a precise height assembly of the plug 5 with the turnspout 9 in the cap 2 is rendered possible. The wall 26 transmits the axial force which is necessary for the engagement of the plug in the container mouth 10, from the cap 2 to the plug A flat abutment web 25 (Figures 6 and 8) which extends along a radial plane and projects from the cap base limits the rotary movement of the cap 2 in the use position by abutment against the shield 8 and thus the pivotal movement of the turnspout when its tube 9a is completely extended (Figure 10). In this position the tube extends approximately in the direction of a radial plane. Fastened to the cap base is an inwardly directed cylindrical wall 26 which is however not completely closed but has an opening which is somewhat offset with respect to the lateral opening 3 in the cap and 3 c :ructed as Lg and is serves to ie closed has other 3 8a which pLIA dE

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r/EP8800643 WO 89/00958 PCT/EP88/00643 -9is defined by two edges, the "engaging edges" 39 and The wall 26 serves to move the tube 9a in the one or the other direction of rotation and thus to pivot the tube outwardlyinto the use position (Figure 10) and to pivot it inwardlyintothe closed position (Figure 14), so long as the rotary movement is not limited by abutments.

Provided on the inner side of the cap wall 2b is a flat positioning web 24 (Figure 8) which, when the plug 5 is inserted, serves together with the cap to position the plug go.. in the .direction of rotation, namely by abutment against a 1 rib 23 on the container mouth 10 (Figure In this manner g the plug can be aligned, e.g. with a bottle label or the like.- The cap can be locked in the closed position with respect to the rib 23 on the opening by a short locking web 27 (Figure 6) provided in the cap.

Figures 10 to 14 show in section on the plane X-X in Figure 9 the position of the parts in differing pivotal positions.

Figure 10 shows the use position with the tube 9a completely pivoted out corresponding to Figure 9 in which the container Scontents can be delivered. On rotation of the cap 2 in the clockwise sense out of the position of Figure 10 into that of Figure 12, the edge 35 of the lateral opening 3 in the cap moves the tube 9a with it in the clockwise sense.

Thereafter the tube is moved into the closed position of Figure 14 by an edge of the cylindrical wall 26, the "second engaging edge" 40 referred to in Claim 1, namely when it has been completely withdrawn inwardly out of the lateral opening 3 in the cap and as a result can no longer be moved by the edge 35 of the opening 3. In the closed position of Figure 14 the outer end 9a of the tube is sealed with respect to the inner wall of the shield 8. The abutment rib 8a of the shield limits the movement of the tube and thus LI also the rotation of the cap 2 with respect to the container :i ***Fgre 0t 1 hwin seto ntepan nFgr ii 9 he osit on f t e pa ts n d ffer ng ivo al p sit ons 10 mouth.

When the tube is pivoted in from the position of Figure in the clockwise sense its liquid passage 9c is firstly shut off with respect to the longitudinal slot 7 in the bush 6.

The inner end of the tube 9a is thus sealed. Only later, when in the position of Figure 14, is its outer end also shut off by the shield 8.

The "first engaging edge" 39 of the cylindrical wall 26 serves to move the tube 9a in the opposite direction out of the position of Figure 14 into that of Figure 10. When the cap is pivoted in the anti-clockwise sense the engaging edge 39 engages the side wall of the tube 9a, pivots the tube firstly out of its sealingposition with respect to the shield 8 and then further in the anti-clockwise sense so that after a certain pivotal movement it comes out of the latera opening 3 in the cap 2 and finally moves into the position of Figure 10 in which it projects by the maximum distance and again defines a continuous liquid passage, as shown in Figure 9. The rotation of the cap 2 in the anticlockwise sense is limited by abutment of the abutment web on the cap with the one edge of the shield 8, as shown in Figure In an embodiment shown in Figures 15 to 17, there is provided concentrically in the interior of the turret 9b for the purpose of additional sealing in the closed position a hollow cylinder 42 which after assembly sealingly engages in the liquid passage 6a of the bush. In its lower portion the hollow cylinder 42 has a longitudinal slot 44 which forms a liquid passage whose breadth corresponds to that of the longitudinal slot 7 in the bush 6 (Figure In the use L 1,44 position of Figure 10 the longitudinal slot 44 permits an unimpeded liquid flow between the liquid passages 6a and 9.c.

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WO 89/00958 PCT/EP88/00643 -I -1 11 In the positions of Figures 12 to 14, the wall of the hollow cylinder 42 blocks this liquid flow and thus serves additionally to seal the inner end of the tube 9a.

As shown in Figures 19 and 20, to provide a tamper-proof closure the lateral opening 3 of the cap can be closed by an integrally moulded tongue 46 which can be broken away. It is connected to the edges 3a of the opening 3 by means of web-like predetermined breaking points 48.

I Figures 21 and 22 show another embodiment of a tamper-proof closure. The illustrated tongue 50 which may be trn away" extends parallel to the axis of the cap 2 and is broader than the opening 3. It is connected to the cap wall 2b by means of predetermined breaking points 52. This embodiment has the advantage that the cap and tongue which may be torn away can be demoulded without an additional movement of the injection mould.

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Claims (2)

1. Container closure of plastics material with a retractable turnspout and the following components: a) a closure plug which may be rotationally fixedly inserted in the container mouth, b) an upwardly extending bush which is eccentrically arranged on the plug base and whose internal passage passes through the plug base, c) a turret which sealingly engages over the bush and is rotatable on it and which together with a tube projecting from it transverse to its axis of rotation forms the turnspout, d) a continuous liquid passage in the turret and tube, e) a sealing device between the bush and turret f) a cap which lockingly engages over the closure plug and the container mouth in the g** axial direction, is rotatable with respect to the closure plug and has a lateral opening through which the tube passes in its operational position and one edge of which serves to move the tube out of the operational position, g) a shield upstanding from the plug floor for closing the lateral opening when the turnspout is pivoted in, JLVILr: VtrVa J7 A- TVI w internal cylinder (42) )f the connecting sleeve lid or which seals this I~ d i1j turnspout in two directions which results in complicated injection moulded components. Slx -4?EN ii Fs~:~ d i a %Wk L with a )nents: )na]ly ~1, a and the over ich rom it ms the ret and 0 *c S p S *0 S. S 0 h) a wall which is on the cap base projects towards the plug base and extends concentrically to the cap axis and having a first engaging edge which peripherally limits it for pivoting the tube out into its operational position, characterised by the following features: i) a longitudinal slot in the wall of the bush together with the inward end of the liquid passage of the tube forms a tap, j) the shield is part-cylindrical, has on its inner wall a projection (abutment rib 8a) as an abutment for the free end of the tube and'thus serves to limit the inward pivotal movement of the tube and also to seal the free end of the tube when it has been pivoted in, k) the wall projecting from the cap base towards the plug base has the shape, with the exception of an interruption, of a closed cylindrical wall whose outer diameter is somewhat smaller than the inner diameter of the shield 1) a second engaging edge provided on the- wall for pivoting the tube in towards the end of the inward pivotal movement until it is behind the shield in its defined storage position. ~I i 0.* S S. 0 0

554. 0 0 and the n the pect to mning in its of floor ihen K~P~L'h 4 ~i 140 q O PE KjL ;_i-i :i 44!.<C A. .4~4 ±t I INTERNATIONALER RECHERCHENBERICHT I AL lmi* 'P rr PPD RA lnngd l l11 1 1 14 2. Container closure as claimed in claim 1, characterised in that for additional sealing of the inner end of the tube when the turnspout is fully pivoted in, a hollow cylinder is mounted on the base of the turret which fits concentrically and in a liquid-tight manner into a liquid passage in the interior of the bush and has a longitudinal slot which is directed towards the tube 3. Container closure as claimed in claim 1, characterised in that the interruption is situated between the two engaging edges and approximately opposite the lateral opening in the cap wall 4. Container closure as claimed in claim 1, characterised in that the shield serves to limit the rotation of the cap, at least when it reaches the Suse position. Container closure as claimed in claim 4, characterised in that a projection (abutment rib arranged in the interior of the cap wall together with the one edge of the shield forms an abutment to terminate the rotation of the cap after the tube has been pivoted out. 6. Container closure as claimed in claim 1 characterised in that the lateral opening in the cap is closed before use to provide a tamper indicator by an integrally moulded tongue which may be broken away. L 1 V v i m t a AjyL u1= 10±owing reatures: i) a longitudinal slot in the wall of the bush together with the inward end of the liquid -P 411/18393-H 1' I-. :1 I., -aim 1, of the is fully on the ally and in the ial slot 7. Container closure as claimed characterised in that the tongue which away extends parallel to the cap axis. in claim 6, may be broken .aim 1, ;ituated and in the .aim 1, :o limit :hes the 8. Container closure as claimed in claim 1 characterised by the following features: a) a positioning web parallel to the axis is provided on the inner surface of the cap wall r b) a rib parallel to the axis is provided on the outer surface of the container mouth p c) the positioning web serves to align the closure plug to a defined peripheral position when it is inserted in the container mouth. 9. Container closure as claimed in claim 8, characterised in that provided on the inner surface of the cap wall there is a locking web which snaps over the upper end of the rib on the container mouth when the cap reaches the closed position. aim 4, rib 25) :ogether Lbutment he tube Dated this 22nd day of July 1991. lim 1, in the tamper which KLAUS THANISCH By his Patent Attorney GRIFFITH HACK CO.