CLOSING CAP ARRANGEMENT

Abstract

The invention relates to a closing cap arrangement (80) for being disposed on an outlet opening of a vessel realised as a pot or a bottle, the closing cap arrangement having a multipart design, the closing cap arrangement comprising an enveloping cap (81) and an inner cap (82) provided with a connective element for detachably connecting the closing cap arrangement to the outlet opening and realised independently of the enveloping cap, the inner cap and the enveloping cap being connected to each other via a detachable connection realised as a form-fit, substance-to-substance or force-fit connection.

Claims

1. A closing cap arrangement (80, 100, 110, 141, 142, 143, 144, 145, 146) for being disposed on an outlet opening of a vessel realised as a pot or a bottle, the closing cap arrangement having a multipart de-sign, the closing cap arrangement comprising an enveloping cap (81, 101, 113, 172, 222, 242, 262) and an inner cap (82, 102, 114) pro-vided with a connective element for detachably connecting the closing cap arrangement to the outlet opening and realised independently of the enveloping cap, characterised in that the inner cap and the enveloping cap are connected to each other via a detachable connection realised as a form-fit, substance-to-substance or force-fit connection.

2. The closing cap arrangement according to claim 1, characterised in that the enveloping cap (81, 101, 113) and the inner cap (82, 102, 114) are each connected to each other by their lower edge via concentric contact surfaces.

3. The closing cap arrangement according to claim 1, characterised in that the inner cap (82, 114) has a sealing disk (85, 115) disposed on a cap bottom (103, 112), the inner cap having a locking groove (97), which protrudes radially inward, adjacent to the cap bottom for fixing the sealing disk.

4. The closing cap arrangement according to claim 1, characterised in that a cap insert (83) realised as a sleeve and forming a separate entity of mass is disposed in a gap formed between the inner cap (82) and the enveloping cap (81).

5. The closing cap arrangement according to claim 4, characterised in that the cap insert (83) has a radially inner and a radially outer contact surface (88, 89) for forming a connection to a sleeve part of the inner cap and a sleeve part of the enveloping cap.

6. The closing cap arrangement according to claim 5, characterised in that the cap insert (83) has ribs (91, 92), which extend parallel to the centre axis of the cap insert (83) on an inner or outer contact surface of the cap insert (83).

7. The closing cap arrangement according claim 4, characterised in that the cap insert (83) is partially realised as a plastic part at least in the area of its contact surface.

8. The closing cap arrangement according to claim 4, characterised in that the cap insert (83) is realised as a cap weight.

9. The closing cap arrangement according to claim 1, characterised in that the enveloping cap (113) comprises a cap bottom (112) formed independently to a jacket sleeve (111) and the inner cap (114) forms a connective element for connecting the jacket sleeve to the cap bottom.

10. The closing cap arrangement according to claim 9, characterised in that the inner cap (114) comprises a cap base (116), which forms the connective element for connecting the outlet opening, and a connective sleeve (117) for connecting the jacket sleeve to the cap bottom, the connective sleeve being disposed concentrically to a sleeve part of the cap base and being received in the jacket sleeve (111) for forming a gap.

11. The closing cap arrangement according to claim 10, characterised in that both the connection between the cap bottom (112) and the connective sleeve (117) and the connection between the jacket sleeve (111) and the connective sleeve are realised as locking connections.

12. The closing cap arrangement according to claim 1, characterised in that the inner cap (82, 114) has a screw thread for forming the connective element for connecting the outlet opening.

13. The closing cap arrangement according to claim 1, characterised in that the inner cap is made of multiple parts and has a collar (151, 177, 193, 202), which is realised as a sleeve and serves for being disposed on the outlet opening, or on a dispense element disposed in the outlet opening and has a push-on cap (150, 170, 200, 220, 240, 260) for being disposed on the collar.

14. The closing cap arrangement according to claim 13, characterised in that the push-on cap (150, 170, 200, 220) has a sleeve part having at least one spring cam (154, 180, 232), which comprises two opposite slots (155, 156, 181, 182, 233), which are disposed in a wall of the sleeve part for forming the tab base, and a cam (159, 184, 235), which is directed radially inward on the cam base.

15. The closing cap arrangement according to claim 14, characterised in that the cam (159, 184, 235) is formed by an indentation in a sleeve wall.

16. The closing cap arrangement according to claim 14, characterised in that the slots (155, 156) each comprise a horizontal section (160), which extends in the circumferential direction of the sleeve part, and two vertical sections (161), which extend from the ends of the horizontal section and are directed towards each other.

17. The closing cap arrangement according to claim 14, characterised in that the slots (181, 182) extend vertically.

18. The closing cap arrangement according to any one of the claim 13, characterised in that the push-on cap (150, 170, 200, 220) comprises several spring cams (154, 180, 232).

19. The closing cap arrangement according to claim 13, characterised in that the collar (193) is equipped with a locking groove (194), which extends circumferentially and is directed radially inward and serves for locking with the spring cam (180) disposed in the sleeve part of the push-on cap (170).

20. The closing cap arrangement according to claim 20, characterised in that the spring cam (232) is disposed between two spacing elements (229).

21. The closing cap arrangement according to claim 20, characterised in that the spacing elements simultaneously serve for connecting the push-on cap (220) to the enveloping cap (222).

22. The closing cap arrangement according to claim 13, characterised in that a sleeve-shaped cap insert (174) is received in a gap (173) formed between the push-on cap (170) and the enveloping cap (172).

23. The closing cap arrangement according to claim 22, characterised in that the cap insert (174) serves for connecting the enveloping cap to the push-on cap.

24. The closing cap arrangement according to claim 23, characterised in that the cap insert (174) comprises vertical ribs (191, 192) on both its in-ner surface and its outer surface.

25. The closing cap arrangement according to claim 24, characterised in that the enveloping cap (172) comprises at least one horizontal circumferential groove (188), which protrudes radially inward, on a sleeve part in such a manner that crossings are formed between the circumferential groove and the ribs (191, 192) because of the arrangement of the cap insert in the gap.

26. The closing cap arrangement according to claim 1, characterised in that the cap inner part (261) is formed in an upper sleeve section as a clamping sleeve (267), which has a clamping cross section (270) deviating from a circular cross section of a collar (269), which is disposed on the push-on cap (260), in contour.

27. The closing cap arrangement according to claim 26, characterised in that the clamping cross section has a flattening, which deviates from a circular cross section, in such a manner that the diameter of the clamping cross section in the area of the flattening is smaller than the outer diameter of the collar.

28. The closing cap arrangement according to claim 27, characterised in that the clamping cross section (270) has a plurality of flattenings (271) distributed across the circumference.

29. The closing cap arrangement according to claim 28, characterised in that a crossover section, which forms a cross section crossover from the circular cross section in the area of an opening edge (265) to the clamping cross section (270) of a clamping sleeve (267), is formed for forming the cross section crossover from the opening edge of the cap inner part to the sleeve section formed as the clamping sleeve.

Description

[0034] In the following, preferred embodiments of the closing cap arrangement are described in more detail using the drawings.

[0035] FIG. 1 shows an isometric view of a closing cap arrangement according to a first embodiment;

[0036] FIG. 2 shows an exploded view of the closing cap arrangement shown in FIG. 1;

[0037] FIG. 3 shows a cross-sectional view of the closing cap arrangement shown in FIG. 1;

[0038] FIG. 4 shows an isometric view of a closing cap arrangement according to another embodiment;

[0039] FIG. 5 shows an exploded view of the closing cap arrangement shown in FIG. 4;

[0040] FIG. 6 shows a cross-sectional view of the closing cap arrangement shown in FIG. 4;

[0041] FIG. 7 shows an isometric view of a closing cap arrangement according to another embodiment;

[0042] FIG. 8 shows an exploded view of the closing cap arrangement shown in FIG. 7;

[0043] FIG. 9 shows a cross-sectional view along cutting plane IX-IX of the closing cap arrangement shown in FIG. 7;

[0044] FIG. 10 shows a cross-sectional view along cutting plane X-X of the closing cap arrangement shown in FIG. 7;

[0045] FIG. 11 shows a partial cross-sectional view from the top of the closing cap arrangement shown in FIG. 7;

[0046] FIG. 12 shows an isometric view of a closing cap arrangement according to another embodiment;

[0047] FIG. 13 shows an exploded view of the closing cap arrangement shown in FIG. 12;

[0048] FIG. 14 shows a cross-sectional view along cutting plane XIV-XIV of the closing cap arrangement shown in FIG. 12;

[0049] FIG. 15 shows a cross-sectional view along cutting plane XV-XV of the closing cap arrangement shown in FIG. 12;

[0050] FIG. 16 shows an exploded view of a closing cap arrangement according to another embodiment;

[0051] FIG. 17 shows a first cross-sectional view of the closing cap arrangement shown in FIG. 16;

[0052] FIG. 18 shows a second cross-sectional view of the closing cap arrangement shown in FIG. 16;

[0053] FIG. 19 shows an isometric view of a closing cap arrangement according to another embodiment;

[0054] FIG. 20 shows an exploded view of the closing cap arrangement shown in FIG. 19;

[0055] FIG. 21 shows a cross-sectional view along cutting plane XXI-XXI of the closing cap arrangement shown in FIG. 19;

[0056] FIG. 22 shows a cross-sectional view along cutting plane XXII-XXII of the closing cap arrangement shown in FIG. 19;

[0057] FIG. 23 shows an isometric view of a closing cap arrangement according to another embodiment;

[0058] FIG. 24 shows an exploded view of the closing cap arrangement shown in FIG. 23;

[0059] FIG. 25 shows a cross-sectional view along cutting plane XXV-XXV of the closing cap arrangement shown in FIG. 23;

[0060] FIG. 26 shows a cross-sectional view along cutting plane XXVI-XXVI of the closing cap arrangement shown in FIG. 23;

[0061] FIG. 27 shows an isometric view of a closing cap arrangement according to another embodiment;

[0062] FIG. 28 shows an exploded view of the closing cap arrangement shown in FIG. 27;

[0063] FIG. 29 shows a cross-sectional view along longitudinal cutting plane XXIX-XXIX of the closing cap arrangement shown in FIG. 27:

[0064] FIG. 30 shows a cross-sectional view along cutting plane XXX-XXX of the closing cap arrangement shown in FIG. 27;

[0065] FIG. 31 shows an isometric view of a closing cap arrangement according to another embodiment;

[0066] FIG. 32 shows an exploded view of the closing cap arrangement shown in FIG. 31;

[0067] FIG. 33 shows a cross-sectional view along longitudinal cutting plane XXXIII-XXXIII of the closing cap arrangement shown in FIG. 31;

[0068] FIG. 34 shows a cross-sectional view along cutting plane XXXIV-XXXIV of the closing cap arrangement shown in FIG. 31.

[0069] FIGS. 1 to 3 show a closing cap arrangement 80, which comprises a total of four components, which includes an enveloping cap 81, an inner cap 82 provided with a cap thread 90, a cap insert 83 disposed in a gap between enveloping cap 81 and inner cap 82 and a sealing disk 85 disposed on a cap bottom 84. With the exception of sealing disk 85, all further components of closing cap arrangement 80 are made of metal, in particular aluminium, in this embodiment. It is generally also possible, to make cap insert 83 of a plastic material, in particular in the event when a first radially outer connection 86 between cap insert 83 and enveloping cap 81 and a second radially inner connection 87 between cap insert 83 and inner cap 82 provided with cap thread 90 are realised as a press-fit connection or an adhesive connection.

[0070] As FIG. 2 shows, cap insert 83 is designed like a sleeve, ribs being provided in the instance of this embodiment, which extend parallel to the centre axis of cap insert 83 on its inner and/or outer contact surface. In the event that connections 86 and 87 are realised as adhesive connections, ribs 91, 92 enable enlarging the adhesive surface on jacket surfaces 88, 89.

[0071] For realising a connection 93 between a radial connective edge 94 of a connective collar 96 formed on an opening edge 95 of inner cap 82 and a lower edge 97 of enveloping cap 91, a crimping connection, an adhesive connection or a welded connection can be provided.

[0072] For fixating sealing disk 85 on cap bottom 84 of inner cap 82, a locking connection is intended in such a manner that the diameter of sealing disk 85 is slightly larger than the inner diameter of inner cap 82 defined by a locking groove formed adjacent to cap bottom 84 in inner cap 82.

[0073] In the case of the same material being chosen for enveloping cap 81, inner cap 82 and cap insert 83, the material preferably being aluminium, plastic sealing disk 85 only has to be taken out of the locking connection to inner cap 82 so that the other cap components can be recycled together.

[0074] Closing cap arrangement 100 shown in FIGS. 4 to 6 comprises only one enveloping cap 101, an inner cap 102 provided with a cap thread 105 and a sealing disk 104 disposed on a cap bottom 103 of inner cap 102. Enveloping cap 101 and inner cap 102 are each connected to each other by their lower edge via concentric contact surfaces, the connection being able to be realised as a press-fit connection, an adhesive connection or a welding connection.

[0075] Closing cap arrangement 110 shown in FIGS. 7 to 11 is made up of overall four components, namely an enveloping cap 113 made up of a jacket envelope 111 and a cap bottom 112 and an inner cap 114, which in contrast to enveloping cap 113, which is made of metal, in particular aluminium, is made of a plastic material and has a sealing disk 115 inserted into inner cap 114.

[0076] For closing cap arrangement 110, plastic inner cap 114 takes over the function of a connective element for connecting jacket envelope 111 to cap bottom 112 besides providing a cap thread 126, jacket envelope 111 and cap bottom 112 together forming enveloping cap 113. For realising this connective function, a connective sleeve 117 is formed on the peripheral edge of a cap base 116 provided with cap thread 126, connective sleeve 117 extending concentrically to a jacket envelope 118 of cap bottom 116 and being connected to cap base 116 only via a radial web 119 formed on the lower edge of cap base 116. On the free end of connective sleeve 117, connective sleeve 117 is provided with a circumferential locking groove 122 and/or a locking protrusion 123 on both an inner side 120 and an outer side 121 in such a manner that a locking groove 125 formed on an edge web 124 of cap bottom 112 locks with locking groove 122 if edge web 124 of cap bottom 112 is inserted into a gap formed between jacket sleeve 118 of cap base 116 and connective sleeve 117.

[0077] Jacket envelope 111 and inner cap 114 are connected in such a manner that jacket envelope 111 is pushed onto connective sleeve 117 of inner cap 114 until an edge seam 126, which is formed on jacket envelope 111, locks behind locking protrusion 123.

[0078] For forming an anti-rotation element between cap bottom 112 and inner cap 114, a locking web 128, which is formed parallel to the cap axis and locks with locking groove 129 formed in edge web 124 of cap bottom 112, is provided on inner side 120 of connective sleeve 117. Another anti-rotation element is formed between radial web 119 of inner cap 114 and a lower edge 131 of jacket envelope 111 in such a manner that a locking protrusion 130 formed on radial web 119 engages into a locking opening of jacket envelope 111. Moreover, locking protrusion 130 serves as an orientation abutment of the cap with respect to a pot not illustrated in this instance.

[0079] In FIGS. 12 and 34, different embodiments of closing cap arrangements 141, 142, 143, 144, 145 and 146 having push-on caps 150, 170, 200, 220, 240 and 260 are illustrated, which as illustrated by the exemplary embodiment in FIG. 12 preferably are intended for being positioned on a collar 151, which is disposed on a bottle neck of a vessel realised as a glass bottle, for example. Collar 151 typically serves for cover a dosing pump, which is disposed in or on the bottle neck and serves for dispensing a liquid, such as in particular perfume, received in the bottle.

[0080] FIG. 13 shows an exploded view of push-on cap 150 which is pulled off collar 151 and, as shown in FIGS. 13 and 15, is connected to collar 151 via a clamp connection when disposed on collar 151.

[0081] As a synopsis of FIGS. 13 and 15 shows, push-on cap 150 is sleeve-shaped and comprises a sleeve part 152, which is provided with a cap bottom 153 on an end. Sleeve part 152 comprises spring cams 154, which are distributed across the circumference of sleeve part 152 and each comprise a cam base 158, which is divided by two opposite slots 155, 156 in a sleeve wall 157 and is provided with a cam 159, which is directed radially inward and is formed by an indentation in sleeve wall 157 in this instance.

[0082] Slots 155, 156 are preferably realised such that they each comprise a horizontal section 160 extending in the circumferential direction of sleeve part 152 and two vertical sections extending from the ends of horizontal section 160, wherein vertical sections 161 of the horizontal sections 160 and are parallel to each other. The opposite slots 155 and 156 enable cam 159, which is formed on cam base 158, to be moved radially outward against a resilient recoil movement.

[0083] As in particular FIG. 13 shows, collar 151 is sleeve-shaped and is provided with a smooth contact surface 164 on its outer surface. On its inner side, collar 151 comprises a plurality of clamping webs 165, which are distributed across the circumference, protrude radially inward and extend vertically. When collar 151 is disposed on a bottle neck (not shown) or on a pumping element of a dosing pump disposed on the bottle neck, clamping webs 165 enable forming a clamping connection between collar 151 and the bottle neck or the pumping element.

[0084] As a synopsis of FIGS. 14 and 15 shows, the clamping connection mentioned above between push-on cap 150 and collar 151 is caused by spring cams 154, which protrude radially inward, abutting against contact surface 164 of collar 151 when pushing push-on cap 150 on collar 151 under preload.

[0085] FIGS. 16 and 18 serve for explaining push-on cap 170, which comprises a cap inner part 171, an enveloping cap 172 and a cap insert 174, which is preferably realised as a cap weight and is inserted into a gap 173 formed between cap inner part 171 and enveloping cap 172.

[0086] Cap inner part 171 comprises a sleeve part 176, which is provided with a cap bottom 175 on an end and, as in particular FIGS. 16 and 17 show, with a radial collar 177 on its lower end, radial collar 177 crossing over to a circumferential axial edge web 178 on its lower edge.

[0087] Sleeve part 176 comprises several spring cams 180 in a sleeve wall 179, the spring cams 180 being distributed across the circumference and each comprising a cam base 183, which is divided by two parallel slots 181, 182, which extend vertically in this instance, in sleeve wall 179 and on which a cam 184 is formed, which protrudes radially inward and is formed by an indentation in the present case.

[0088] Enveloping cap 172 is also sleeve-shaped and has a cap bottom 186 formed on the upper end of a sleeve part 185 and an opening edge 187 formed at the lower end.

[0089] Cap insert 174 disposed in gap 173 is also sleeve-shaped, ribs 191, 192, which extend in the longitudinal direction of cap insert 174, being formed on both an outer surface 189 and on an inner surface 190 in such a manner that cross sections, in which clamping forces become effective, are formed between horizontal grooves 188 and vertical ribs 191 when cap insert 174 is disposed in gap 173. Likewise, a clamping is carried out between vertical ribs 192 and sleeve wall 179 of cap inner part 171.

[0090] Cap inner part 171 and enveloping cap 172 are directly connected between opening edge 187 of enveloping cap 172 and edge web 178 formed on collar 177 of cap inner part 171, this connection selectively being able to be realised as a press-fit connection, an adhesive connection or a welding connection.

[0091] As in particular a synopsis of FIGS. 16 and 17 makes clear, push-on cap 170 or cap insert 171 serves for being disposed on a collar 193, which is located on a bottle neck (not shown) or a pumping element of a dosing pump. The collar is provided with a locking groove 194, which extends horizontally and circumferentially and with which spring cams 180 formed on cap inner part 171 lock when pushing push-on cap 170 on. For ensuring a safe locking of cap inner part 171, an axial abutment is formed on collar 193 via a collar ledge 195 protruding outward radially.

[0092] FIGS. 19 to 22 show push-on cap 200, whose general design and functioning corresponds to that of cap inner part 171 of push-on cap 170, push-on cap 200 comprising neither a collar 177 nor a web edge 178 at the lower edge of sleeve part 205 unlike cap inner part 171.

[0093] Push-on cap 200 serves for the locked arrangement on a collar 202, which is shown in FIGS. 20 and 21 and which does not comprise a collar ledge unlike collar 193 illustrated in FIG. 16, for example, which serves for being combined with push-on cap 170 provided with cap inner part 171.

[0094] Beyond this, a locking connection between push-on cap 200 and collar 202, which is provided with a horizontally circumferential locking groove 203 consistent with collar 193, is realised in such a manner that, as illustrated in FIGS. 21 and 22, cams 184, which are formed on spring cams 180, lock with locking groove 203 when push-on cap 200 is pushed onto collar 202 if spring camps 180 spring into locking groove 203 after an elastic deformation, which is caused by an upper opening edge 204 and is directed radially inward, upon reaching locking groove 203.

[0095] In FIGS. 23 to 26, another embodiment of push-on cap 220 is shown, which, as is shown in particular in FIGS. 24 to 26, comprises a cap inner part 221 and an enveloping cap 222, which each comprise a sleeve part 223, 224, which are closed at one end by a cap bottom 225 and 226, respectively, and comprise a cap opening having an opening edge 227 and 228, respectively, which are formed by a lower edge of sleeve part 223 and 224, respectively, on respective opposite ends.

[0096] Cap inner part 221 comprises spacing elements 229, which protrude radially outward and are distributed across the circumference of a sleeve wall 231 and are formed, in this instance, from a plurality of ribs 230 extending parallel to each other in the longitudinal direction of sleeve part 223. In wall areas of sleeve wall 231, which are each disposed between to spacing elements 229, a spring cam 232 is formed, which comprises a cam 235, which protrudes radially inward and is shown in particular in FIGS. 25 and 26, on a cam base 234, which is divided by two parallel slots 233, which extend in the longitudinal direction of sleeve part 223 in the instance at hand and are located in sleeve wall 231. As FIG. 25 shows, sleeve wall 231 of sleeve part 223 is equipped with three spacing elements 229 distributed equidistantly across the circumference and also comprises three spring cams 232 each disposed between two spacing elements 229 and distributed equidistantly across the circumference.

[0097] To elucidate the function of spring cams 232, the contour of a collar 151 (FIG. 13) is shown by a chain dotted line, collar 151 being equipped with a smooth outer jacket surface. For disposing push-on cap 220 on collar 151, the mechanical assembly, which is made up of cap inner part 221 and enveloping cap 222 and with which enveloping cap 222 is preferably produced via a frictional connection between spacing elements 229 and a sleeve wall 236, is pushed onto collar 151, spring cams 232 elastically escaping into a spring space, which is formed between spring cams 232 and sleeve wall 236 of enveloping cap 222, while producing a preload force acting radially inward. Push-on cap 220 is secured on the collar by the spring force exerted by spring cams 232 on collar 151 and can be disposed on or be removed from the collar by overcoming the spring force. The connection between cap inner part 221 and enveloping cap 222 can also be an adhesive connection or a welding connection.

[0098] In FIGS. 27 to 30, push-on cap 240 is shown in another embodiment, which comprises a cap inner part 241 and an enveloping cap 242 in the instance of the presently illustrated embodiment, enveloping cap 242 comprising a sleeve part 243 having a uniform diameter, which is closed on one end by a cap bottom 244 and comprises a cap opening having an opening edge 245 on its opposite end. Cap inner part 241 comprises a sleeve part 246 having a tiered diameter, such that a first sleeve ledge 250 is formed in the cross over area from a first sleeve section 248 closed by a cap bottom 247 on one end to a second sleeve section 249 larger in diameter, and such that a second sleeve ledge 252 is formed in the cross over area from sleeve section 249 to an opening edge 251 at a radially outward offset. In the present instance, the connection between cap inner part 241 and enveloping cap 242 can take place between opening edges 245 and 251 by producing a welding connection, press-fit connection or adhesive connection.

[0099] For fixedly disposing push-on cap 240 on a collar 253, sleeve-shaped collar 253 is equipped with a plurality of clamping webs 255, which are distributed across the circumference of a sleeve wall 254, on the outer side of sleeve wall 254, clamping webs 255 protruding radially outward from sleeve wall 254, as in particular FIGS. 28 to 30 show, so that clamping forces are produced between sleeve part 246 of cap inner part 241 or sleeve section 249 and the in this instance three clamping webs 255 when disposing push-on cap 240 on collar 253.

[0100] As in particular FIG. 29 shows, sleeve ledge 250 formed between sleeve section 248 and sleeve section 249 serves as an axial abutment against an upper collar edge 256 when push-on cap 240 is disposed on collar 253.

[0101] In FIGS. 31 to 34, another embodiment of push-on cap 260 is shown, which, as shown in particular in FIGS. 33 and 34, comprises a cap inner part 261 and an enveloping cap 262, both cap inner part 261 and enveloping cap 262 being sleeve-shaped and each being closed on one end by a cap bottom 263 and 264, respectively, and each being equipped with an opening edge 265 and 266, respectively, on opposing ends. For forming a mechanical connection forming push-on cap 260 in its entirety, cap inner part 261 and enveloping cap 262 are connected to each other on their opening edges 265, 266 disposed concentrically to each other by means of a press-fit connection, an adhesive connection or a welding connection.

[0102] As in particular a synopsis of FIGS. 33 and 34 makes clear, cap inner part 261 is formed in an upper sleeve section as a clamping sleeve 267, which has a clamping cross section 270 whose contour deviates from a circular cross section 268 of a collar 269, on which push-on cap 260 is disposed, and which preferably comprises three flattenings 271, which are formed on cross-sectional sections distributed across the circumference, so that the diameter of the clamping cross section is smaller in the area of the flattening than the outer diameter of collar 269.

[0103] In the case at hand, clamping cross section 270 is formed beginning from a circular shape by flattenings 271 being deformed radially inwards starting from an inner diameter, which is larger than the outer diameter of collar 269, so that corresponding clamping forces act on collar 269 in the area of flattenings 271, the clamping forces enabling a clamping fixation of push-on cap 260 on collar 269.

[0104] As FIG. 33 shows, a cross over section 272, which enables the cross-sectional cross over from a circular cross section in the area of opening edge 265 to clamping cross section 270 of clamping sleeve 267 shown in FIG. 34, is formed for forming a cross-sectional cross over from opening edge 265 of cap inner part 261 to the clamping sleeve provided with clamping cross section 270.

[0105] For a better handling of push-on cap 260, which in particular enables pulling push-on cap 260 off of collar 269, an upper handle part 272 of enveloping cap 262 is equipped with a handle protrusion 273, which protrudes radially outward with respect to opening edge 266 and is realised in the present instance by forming a knob part.