Source: https://patents.google.com/patent/US20020074359A1/en
Timestamp: 2018-05-28 05:59:36
Document Index: 771904975

Matched Legal Cases: ['arts 21', 'art 22', 'arts 21', 'arts 21', 'art 21', 'art 22', 'art 2', 'art 22', 'art 22', 'arts 21', 'art 21', 'art.\n12']

US20020074359A1 - Dispenser drain attachment for flowable media - Google Patents
Dispenser drain attachment for flowable media Download PDF
US20020074359A1
US20020074359A1 US10020282 US2028201A US2002074359A1 US 20020074359 A1 US20020074359 A1 US 20020074359A1 US 10020282 US10020282 US 10020282 US 2028201 A US2028201 A US 2028201A US 2002074359 A1 US2002074359 A1 US 2002074359A1
US10020282
US6752295B2 (en )
As a consequence, the dispenser drain tube is tightly sealed by the lower rubber diaphragm under such vacuum, because its sealing lip is tightly pressed from below to the inner wall of the tube under the increased external, i.e., atmospheric pressure, whereas the upper rubber diaphragm yields to the atmospheric pressure acting from the top, thereby permitting the flow of liquid around the sealing lip downwards, so that the chamber between the two rubber diaphragms is virtually filled up with liquid. When the gas bellows are compressed again, the lower diaphragm is opened by the pressure generated in the chamber between the two rubber diaphragms, and liquid flows around the diaphragms downward and out of the tube. The upper rubber diaphragm, by contrast, remains tight, or its tightness is increased even more so, by the increased pressure acting from the bottom. After the bellows has been released, a vacuum is generated again vis-A-vis the external pressure, which causes the lower rubber diaphragm to be closed, whereas the upper rubber diaphragm opens and new liquid can flow into the chamber between the two rubber diaphragms. Thus, the chamber is filled for further portioning, whereby the liquid, however, is retained by the lower rubber diaphragm until the gas bellows is actuated the next time.
[0019]FIG. 1 is a side, sectional view of the assembled dispenser drain attachment of the present invention;
[0020]FIG. 2 shows the two one-piece structural parts, each produced by the two-component injection molding technique, next to each other before they were plugged together, each of said parts being shown via a side, sectional view;
[0021]FIG. 3 shows the drain tube of the present invention with a receiving ring for accommodating the gas bellows in the injection molding position after the first component has been produced by injection molding;
[0022]FIG. 4 shows the drain tube with the receiving ring for receiving the gas bellows in the injection molding position after the second component has been produced by injection molding; and, FIG. 5 shows the two one-piece parts, each produced via the two-component injection molding technique, before the two parts are plugged together.
It will now be explained in greater detail how drain tube 10, with gas bellows 11, is structured and injection-molded. For their assembly, the two structural parts 21, 22 are readily plugged one onto the other. For this purpose, a collar 13 is formed on threaded cap 1, extending around its drain socket 2. Collar 13 belongs to threaded cap 1, thereby forming one single piece with the latter. As a result of collar 13, an annular groove is formed between the collar itself and drain socket 2; said annular groove extending entirely around drain socket 2. On its upper inner side, collar 13 has a recess 14 extending all around. On the other hand, the end segment of the drain tube 10 and, thus, the second one-piece structural part 22, have a bulge 15 extending entirely around on the outer side. When the two structural parts 21, 22 are plugged together, bulge 15 snaps precisely into a recess 14 and fits into the recess in a sealing manner. This permits the two structural parts 21, 22 to be simply plugged together, so as to produce a connection that is tension-proof and tight. Furthermore, drain tube 10 clings tightly to the outer surface of drain socket 2, so that it is correctly guided on the latter, thereby making certain that double diaphragm 6 will come to rest in the interior of drain tube 10 correctly centered and, consequently, will safely seal the dispenser drain attachment against unintended draining of liquid. Furthermore, the joint is sufficiently strong to afford the force of reaction required in order to tightly retain the dispenser drain when the bellows are also compressed.
[0028]FIG. 2 shows, separately, two one-piece structural parts produced via the two-component injection molding technique, in their positions relative to one another before they are plugged together. Threaded cap 1 with drain socket 2 and extension 5 are injection molded onto the latter from the first injection molding component, and double diaphragm 6 is injection molded onto extension 5 as the second injection molding component, thereby jointly forming the first one-piece structural part 21 of the dispenser drain attachment.
The second structural part 22, which is a one-piece part, as well, is shown and visible underneath. Part 2 is comprised of drain tube 10 and lateral sleeve 16 being injection-molded thereon, with holding ring 12 for retaining gas bellows 11. Drain tube 10, lateral sleeve 16 and retaining ring 12 are produced from the first injection molding component, whereas elastic gas bellows 11 is produced from the second injection molding component.
[0030]FIG. 3 shows drain tube 10 with lateral receiving sleeve 16 and retaining ring 12 for retaining gas bellows 11 in the injection-molding position after a first injection molding component has been injected. The second structural part 22 can be seen here from the right-hand side in FIGS. 1 and 2. Receiving sleeve 16 comprises an edge 17, which is slightly bulging on its inner side, or the inner wall of receiving sleeve 16, is slightly offset outwards behind edge 17. Retaining ring 12 is connected with lateral receiving sleeve 16 via a film hinge 18; it has an edge which is slightly bulging on its outer side in an edge zone 20. Retaining ring 12 can be folded over and around film hinge 18 by 180° and clipped into lateral receiving sleeve 16, in that its bulging edge 20 snaps in behind the budging inner edge of lateral receiving sleeve 16, and will then rest tightly against the inner wall of lateral receiving sleeve 16.
[0031]FIG. 4 shows a sectional view of drain tube 10 with gas bellows 11, representing the second injection molding component already molded on in the injection molding position, as viewed along the line A-A in FIG. 3. The lateral receiving sleeve 16, for receiving retaining ring 12, can be seen; the latter being connected thereto via film hinge 18. Film hinge 18 makes it possible to injection-mold drain tube 10 together with lateral receiving sleeve 16 and retaining ring 12 in an expeditious manner. The representation shown in the drawing figures illustrates a bulging inner edge 19 of lateral receiving sleeve 16, as well as bulging outer edge 20 of retaining ring 12. Elastic gas bellows 11 is injection-molded onto said retaining ring 12 via a second injection molding component. Thereafter, the second one-piece structural part 22 for the dispenser drain attachment is completed.
Finally, FIG. 5 shows the finished one-piece structural parts 21, 22, each injection-molded by the injection molding technique before they are then plugged together. Visible in FIG. 5 is the plurality of holes 4 provided in the connection surface of drain socket 2, as well as collar 13, extending around drain socket 2. On its outer side, threaded cap 1 is provided with a knurling 23, so that the dispenser drain attachment can be safely gripped when it is screwed to the mouth of a bottle. Double diaphragm 6, with the two spaced-apart diaphragm disks 7, 8, can be seen below drain socket 2. The laterally mounted lateral receiving sleeve 16, for accommodating retaining ring 12, and gas bellows 11, supported by said retaining ring 12, are visible on drain tube 10, as shown underneath. The bulged edge 20 is visible on the upper edge of the orifice of drain tube 10. When plugged to the first structural part 21, the bulged edge fits into a corresponding recess located on the inner edge of collar 13.
1. A dispenser drain attachments comprising:
a first one-piece structural part forming a threaded cap with a tapering drain socket, said first one-piece structural part being made of a material moldable in an injection-molding procedure;
a second one-piece structural part forming a drain tube having a double diaphragm for sealing said drain tube, said double diaphragm being located within said drain tube and having deformable diaphragm disks, said second one-piece structural part further including elastic gas bellows for dispensing a flowable media by alternately deforming said deformable diaphragm disks of said double diaphragm, said elastic gas bellows acting as one-way valves as a result of changed pressure conditions occurring when said elastic gas bellows is deformed via compression and release, said second one-piece structural part being made of a material moldable in an injection-molding procedure; and,
means for attaching said first one-piece structural part to said second one-piece structural part, said means for attaching being formed as an integral part of at least one of said first one-piece structural part or said second one-piece structural part;
said dispenser drain attachment consisting of said first one-piece structural part and said second one-piece structural part with each of said one-piece structural parts made via two-component injection molding.
2. The dispenser drain attachment according to claim 1, wherein said tapered drain socket of said threaded cap of said first one-piece structural part has a perforated terminating element with an extension, with said double diaphragm of said second one-piece structural part being molded onto said extension.
4. The dispenser drain attachment according to claim 1, further comprising a lateral receiving sleeve shaped on an outer side of said drain tube, said lateral receiving sleeve merges on one side into a film hinge, onto which a retaining ring with a collar is molded, said collar being capable of being tightly clipped into said lateral receiving sleeve.
5. The dispenser drain attachment according to claim 1, wherein said drain socket of said first one-piece structural part and said drain tube of said second one-piece structural part are injection-molded from a polyolefin.
6. The dispenser drain attachment according to claim 5, wherein said polyolefin is a member selected from the group consisting of polypropylene, polyethylene and polyamide.
7. The dispenser drain attachment according to claim 1, wherein said double diaphragm and said elastic gas bellows are injection-molded from a thermoplastic elastomer.
8. The dispenser drain attachment according to claim 1, further comprising a collar molded around said drain socket on said threaded cap, said collar having a recess extending entirely around its inner wall, with a bulge extending entirely around an upper edge of a mouth of said drain tube and fitting into said recess.
9. The dispenser drain attachment according to claim 1, further comprising a lateral receiving sleeve injection-molded onto an outer side and laterally on said drain tube comprising a bulging inner edge, with a retaining ring connected with said lateral receiving sleeve via a film hinge comprising a collar with a bulging outer edge, so that said retaining ring is clipable onto said lateral receiving sleeve in a sealing manner so that said collar of said retaining ring is able to fit tightly into said lateral receiving sleeve.
10. The dispenser drain attachment according to claim 9, wherein said retaining ring is pivotable by 180° onto said lateral receiving sleeve and tightly clipped onto said lateral receiving sleeve.
11. The dispenser drain attachment according to claim 1, wherein said means for attaching said first one-piece structural part to said second one-piece structural part includes tightly plugging said first one-piece structural part with said second one-piece structural part.
12. A method for manufacturing a dispenser drain attachment, said dispenser drain attachment including:
a first one-piece structural part forming a threaded cap with a tapering drain socket, said first one-piece structural part being made of a material moldable in an injection-mold-ing procedure;
means for attaching said first one-piece structural part to said second one-piece structural part, said means for attaching being formed as an integral part of at least one of said first one-piece structural part or said second one-piece structural part, said method comprising the steps of:
(a) a two-component injection-molding procedure for making said first one-piece structural part;
(b) a two-component injection-molding procedure for making said second one-piece structural part; and,
(c) attaching said first one-piece structural part to said second one-piece structural part to complete manufacture of said dispenser drain attachment.
13. The method for manufacturing a dispenser drain attachment according to claim 12, wherein said attaching step is carried out by plugging said first one-piece structural part with said second one-piece structural part to form said dispenser drain attachment.
14. The method for manufacturing a dispenser drain attachment according to claim 12, wherein said tapered drain socket of said threaded cap of said first one-piece structural part has a perforated terminating element with an extension, with said double diaphragm of said second one-piece structural part being molded onto said extension.
15. The method for manufacturing a dispenser drain attachment according to claim 12, wherein said double diaphragm is made of an elastic, injection-moldable rubber material.
16. The method for manufacturing a dispenser drain attachment according to claim 12, further comprising a lateral receiving sleeve shaped on an outer side of said drain tube, said lateral receiving sleeve merges on one side into a film hinge, onto which a retaining ring with a collar is molded, said collar being capable of being tightly clipped into said lateral receiving sleeve.
17. The method for manufacturing a dispenser drain attachment according to claim 12, wherein said drain socket of said first one-piece structural part and said drain tube of said second one-piece structural part are injection-molded from a polyolefin.
18. The method for manufacturing a dispenser drain attachment according to claim 17, wherein said polyolefin is a member selected from the group consisting of polypropylene, polyethylene and polyamide.
19. The method for manufacturing a dispenser drain attachment according to claim 12, wherein said double diaphragm and said elastic gas bellows are injection-molded from a thermoplastic elastomer.
20. The method for manufacturing a dispenser drain attachment according to claim 12, further comprising a collar molded around said drain socket on said threaded cap, said collar having a recess extending entirely around its inner wall, with a bulge extending entirely around an upper edge of a mouth of said drain tube and fitting into said recess.
21. The method for manufacturing a dispenser drain attachment according to claim 12, further comprising a lateral receiving sleeve injection-molded onto an outer side and laterally on said drain tube comprising a bulging inner edge, with a retaining ring connected with said lateral receiving sleeve via a film hinge comprising a collar with a bulging outer edge, so that said retaining ring is clipable onto said lateral receiving sleeve in a sealing manner so that said collar of said retaining ring is able to fit tightly into said lateral receiving sleeve.
22. The method for manufacturing a dispenser drain attachment according to claim 21, wherein said retaining ring is pivotable by 180° onto said lateral receiving sleeve and tightly clipped onto said lateral receiving sleeve.
US10020282 2000-12-15 2001-12-14 Dispenser drain attachment for flowable media Expired - Fee Related US6752295B2 (en)
CH2448/2000 2000-12-15
CH2448/00 2000-12-15
CH24482000 2000-12-15
US20020074359A1 true true US20020074359A1 (en) 2002-06-20
US6752295B2 US6752295B2 (en) 2004-06-22
ID=4569308
US10020282 Expired - Fee Related US6752295B2 (en) 2000-12-15 2001-12-14 Dispenser drain attachment for flowable media
US (1) US6752295B2 (en)
EP (1) EP1215167B1 (en)
DE (1) DE50113369D1 (en)
DK (1) DK1215167T3 (en)
ES (1) ES2298211T3 (en)
WO2006004311A1 (en) * 2004-04-06 2006-01-12 Kyung-Soon Kim Drain vessel for vacuum packing
CN2937092Y (en) * 2006-08-02 2007-08-22 袁建军 Liquid dispenser
FR2962986B1 (en) 2010-07-23 2013-04-19 Gb Dev A device for dispensing a liquid, and method of fabricating such a device.
GB2150226B (en) * 1983-11-01 1986-11-12 Kebo Prod Ab A dispensing device for discharging a liquid or pasty product from a container containing such a product
WO2004073878A2 (en) * 2003-02-18 2004-09-02 Incro Limited Dispenser pump
WO2004073878A3 (en) * 2003-02-18 2004-10-14 Incro Ltd Dispenser pump
DE50113369D1 (en) 2008-01-24 grant
EP1215167A2 (en) 2002-06-19 application
EP1215167B1 (en) 2007-12-12 grant
DK1215167T3 (en) 2008-05-05 grant
US6752295B2 (en) 2004-06-22 grant
ES2298211T3 (en) 2008-05-16 grant
EP1215167A3 (en) 2002-06-26 application
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WEBER, THOMAS;REEL/FRAME:012608/0393