EP1467922B3 - Container closure plug - Google Patents

Container closure plug Download PDF

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Publication number
EP1467922B3
EP1467922B3 EP03700871A EP03700871A EP1467922B3 EP 1467922 B3 EP1467922 B3 EP 1467922B3 EP 03700871 A EP03700871 A EP 03700871A EP 03700871 A EP03700871 A EP 03700871A EP 1467922 B3 EP1467922 B3 EP 1467922B3
Authority
EP
European Patent Office
Prior art keywords
gasket
plug
seat
closure plug
rim
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03700871A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1467922B1 (en
EP1467922A1 (en
Inventor
Cornelis Am. Flange & MFG. Co. Inc VAN DE KLIPPE
Herman Kars
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Greif International Holding BV
Original Assignee
Greif International Holding BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27614816&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1467922(B3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US10/047,252 external-priority patent/US20030132231A1/en
Application filed by Greif International Holding BV filed Critical Greif International Holding BV
Priority to DE60315594T priority Critical patent/DE60315594T3/de
Publication of EP1467922A1 publication Critical patent/EP1467922A1/en
Publication of EP1467922B1 publication Critical patent/EP1467922B1/en
Application granted granted Critical
Publication of EP1467922B3 publication Critical patent/EP1467922B3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • B65D39/082—Bung-rings and bungs for bung-holes
    • B65D39/084—Separated bung-rings made by one element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2251/00—Details relating to container closures
    • B65D2251/20—Sealing means
    • B65D2251/205—Inserted

Definitions

  • This invention is directed to an improved container closure plug and more specifically a threaded plug having a unique gasket retaining feature.
  • drums, pails and the like with one or more dispensing and/or fill openings.
  • Such openings have an internal helical screw thread which merges into an unthreaded gasket sealing area.
  • An externally threaded closure plug carrying an annular sealing gasket is threadedly engaged within the opening. Upon tightening the plug, the plug gasket is drawn down tightly against the unthreaded gasket sealing area to provide an effective sealing of the container. While many millions of drums and other containers have been sealed in this fashion, an occasional problem arises which this invention addresses. Thatproblem has not only to do with sealing but also with unscrewing of the plug from the container opening.
  • An object of the present invention is to provide a closure plug that overcomes the problems of sealing gasket gripping and looping.
  • a further object of one embodiment of the present invention is to provide a closure plug that fits a range of container openings
  • a container closure plug is formed with a cylindrical sidewall having an external helical screw thread, a circumferentially enlarged rim, an annular gasket seat immediately under the plug rim and a continuous circumferential radially outwardly extending gasket retaining lip below the plug gasket seat, wherein the gasket seat flares radially outwardly and upwardly directly from the root of gasket retaining lip to meet the plug rim.
  • the gasket seat is of frusto-conic shape.
  • a resilient sealing gasket is stretched onto the gasket seat and assumes the shape of the gasket seat; the sealing gasket may assume the shape of a frusto-conic gasket seat
  • a closure plug in accordance with the present invention is combined with an opening in a container wall with a bushing, the bushing having a cylindrical wall with an internal helical screw thread and an upwardly extending, smooth gasket sealing area, the sealing gasket being substantially radially compressed between the bushing gasket sealing area and the plug gasket seat and lying in close proximity to the bushing internal helical screw thread.
  • a closure plug in accordance with the present invention provides a long sought after solution to the above mentioned "gripping" and looping' problems in a simple straightforward manner.
  • the closure plug is formed with a cylindrical threaded sidewall and a disc like bottom wall.
  • the sidewall terminates in a circumferentially enlarged rim and has an annular gasket seat immediately under the rim. Interposed between the plug gasket seat and the sidewall thread is the gasket retaining lip.
  • the resilient sealing gasket is stretched over the plug gasket seat occupying the vertical space between the plug rim and the retaining lip.
  • a more detailed feature is to provide a plug gasket seat with structure to positively retain the plug gasket thereon during screwing and unscrewing.
  • a prior art closure plug is illustrated in Figs 1 to 4 and is generally indicated at numeral 1, and is moulded from synthetic plastic resin to have a disc like bottom wall 2 surrounded by a cylindrical sidewall 3 terminating in a circumferentially enlarged rim 4.
  • the interior of the plug 1 has a series of wrench engaging lugs 5 for imparting screwing and unscrewing torque to the plug.
  • the plug sidewall 3 has a pilot portion 6 extending from the bottom wall 2, an external helical screw thread 7 and a gasket seat 8 positioned immediately below the plug rim 4.
  • the gasket seat 8 lies in plane axially aligned with the plug thread root diameter.
  • the plug sidewall 3 is formed with a circumferential retaining lip 9 at the upper end of the thread 7 which extends radially outwardly In axial alignment with the thread crest.
  • the plug thread runs out and terminates at the point 10 within the lip 9 leaving a uniform upwardly facing continuous annular surface 11 lying in a plane parallel to the undersurface 4a of the plug rim 4 and immediately above the thread termination 10.
  • a resilient annular sealing gasket 12 having a substantially square cross sectional shape is stretched over the plug so as to hug the gasket seat 8. The gasket thus positioned is snugly clamped between the undersurface 4a of the plug rim 4 and the upper surface 11 of the retaining lip 9 making dislodgement of the gasket 12 from the gasket seat 8 quite unlikely.
  • the container wall opening within which the plug 1 Is threadedly engaged as clearly shown in Fig. 3 consists of a container wall 20 within which a bushing generally Indicated at numeral 21 is inserted in a conventional manner.
  • the bushing 21 has a circumferentially extending polygonal base 22, a cylindrical wall 23 extending therefrom and terminating in a radially outwardly curled bead 24.
  • the container wall 20 overlles the polygonal base 22 in a mating embossment 25 and has an upstanding substantially cylindrical neck 26 which extends within the bushing curl 24.
  • a bushing gasket 27 is compressed between the bushing 21 and the surrounding surfaces of the container wall 20.
  • An internal helical screw thread 28 is formed on the bushing wall 23 extending from the base 22 to a thread run-out point 29 at the start of the bead 24.
  • the upwardly extending unthreaded bead portion immediately above the thread run-out point 29 forms a smooth gasket sealing area 30.
  • the sealing relationship between the plug 1 and bushing 21 in fully torqued condition as depicted in Fig. 3 shows the plug gasket 12 tightly compressed between the plug gasket seat 8 and the bushing sealing area 30.
  • the gasket 12 is also axially restrained between the rim undersurface 4a and the upper surface 11 of the retaining lip 9.
  • the gasket 12 in this tightened position lies in contact with the bushing thread helical run-out and termination point 29.
  • the continuous annular upper surface of the retaining lip maintains a constant axial spacing from the rim under surface 4a and prevents the gasket 12 from at any point becoming ensnared in the bushing thread 28.
  • Fig. 4 illustrates unscrewing another prior art plug 40 from an internally threaded container wall opening neck 41.
  • the plug gasket 42 sits on the gasket seat 43 formed at the root diameter of the plug thread but the plug thread 44 simply diminishes indicated by numeral 45 as it approaches the gasket seat 43.
  • the gasket 42 has almost no axial support supplied by the diminished thread 45.
  • the gasket becomes easily ensnared between the interengaging closure threads and is pulled off the gasket seat creating a serious obstruction to normal closure functionality.
  • a metal closure plug 60 in an example is cut and rolled from 1.15 mm drum end steel.
  • the gasket retaining lip 61 is rolled to have a triangular, thread-like, cross-section having an included angle of 55°, a radial extension D1 less than the outside radial extension D2 of the crest of thread 7 and to lie in a plane parallel to the undersurface 4a of the plug rim 4.
  • the upper flank 62 of the retaining lip 61 forms a continuous peripheral upwardly and outwardly facing surface above the screw thread 7.
  • the diameter D3 of the inner root 63 of the lip 61 is less than the thread root diameter D4.
  • the gasket seat 64 flares radially outwardly and upwardly to meet the rim 4 at essentially the same point that gasket seat 8 meets the rim in the first embodiment.
  • a conventional gasket 12, of E. P.D.M., black nitrile or P.E., is stretched onto the gasket seat 64 and assumes the same generally flared shape; as shown in Fig. 6 .
  • the effect of the geometry in this embodiment is that the radial extension D1 - D3 of lip 61 has gasket lifting and anti-grabbing and anti-looping functions.
  • the reduced lip diameter enables the closure plug to fit a greater range of container openings.
  • the flared gasket seat 64 has two advantages. Firstly it provides an increased volume for the sealing gasket 12 in the area between the closure plug lip 61 and the gasket sealing area 30 of the container closure bushing 21 and, secondly, the frusto-conic shape assumed by the stretched gasket 12 provides an increased area of contact between the gasket and the gasket sealing area 30 as the plug is being screwed into the bushing 21.
  • the sealing gasket is "fed in” to the volume between the bushing sealing area 30 and plug seat 64, with the leading end of the gasket initially being subjected to lower (or even no) compression.
  • the initial contact band between the gasket and the closure bushing is partway up the side of the gasket
  • FIGs. 7 and 8 This is seen most clearly in Figs. 7 and 8 , of an embodiment of a closure plug, formed from a suitable plastics material, in which the plug threads, rim and lip 61 have a similar geometry to the embodiment shown in Figs. 6 and 7 , but the plug is formed from a suitable plastics material.
  • the effect of this increased area of contact and lower gasket leading end compression is to further mitigate against gasket looping during plug torqueing.
  • Another advantage of the geometry used for the lip 61 is that it reinforces the plug, enabling the plug in Figs. 5 and 6 to be formed from thinner gauge steel than used for prior art plugs, whilststill maintaining equivalent structural integrity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Pipe Accessories (AREA)
  • Taps Or Cocks (AREA)
  • Glass Compositions (AREA)
  • Safety Valves (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
EP03700871A 2002-01-17 2003-01-15 Container closure plug Expired - Lifetime EP1467922B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE60315594T DE60315594T3 (de) 2002-01-17 2003-01-15 Behälterverschlussstopfen

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US47252 2002-01-17
US10/047,252 US20030132231A1 (en) 2002-01-17 2002-01-17 Closure plug improvement
GBGB0226866.2A GB0226866D0 (en) 2002-01-17 2002-11-18 Closure plug improvement
GB0226866 2002-11-18
PCT/GB2003/000130 WO2003062078A1 (en) 2002-01-17 2003-01-15 Closure plug

Publications (3)

Publication Number Publication Date
EP1467922A1 EP1467922A1 (en) 2004-10-20
EP1467922B1 EP1467922B1 (en) 2007-08-15
EP1467922B3 true EP1467922B3 (en) 2011-08-31

Family

ID=27614816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03700871A Expired - Lifetime EP1467922B3 (en) 2002-01-17 2003-01-15 Container closure plug

Country Status (12)

Country Link
EP (1) EP1467922B3 (zh)
JP (1) JP4475388B2 (zh)
CN (1) CN100341753C (zh)
AT (1) ATE370078T1 (zh)
AU (1) AU2003202017B2 (zh)
BR (1) BRPI0306963B1 (zh)
DE (1) DE60315594T3 (zh)
ES (1) ES2292930T7 (zh)
NO (1) NO327273B1 (zh)
PL (1) PL200367B1 (zh)
RU (1) RU2294870C2 (zh)
WO (1) WO2003062078A1 (zh)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7287662B2 (en) 2002-11-18 2007-10-30 American Flange & Mfg. Co., Inc Closure plug improvement
DE102009022800B3 (de) † 2009-05-27 2010-08-19 Schütz GmbH & Co. KGaA Spundstopfenverschluss für Spundbehälter
RU2490188C2 (ru) * 2010-06-22 2013-08-20 Федеральное казенное предприятие "Государственный научно-исследовательский институт химических продуктов" (ФКП "ГосНИИХП") Герметичная тара
RU2629863C2 (ru) * 2012-04-23 2017-09-04 Маузер-Верке Гмбх Металлическая шпунтовая заглушка с пластиковым защитным слоем
EP2772449A1 (en) * 2013-02-28 2014-09-03 Technocraft Industries (India) Ltd. Insert for a drum closure
CN103211702B (zh) * 2013-04-17 2014-12-24 常熟市康宝医疗器械厂 医用喂食、冲洗袋的加液口结构
CN104803085B (zh) * 2015-05-11 2016-08-24 邵晖 一种快速开启与闭合的容器塞
WO2017223091A1 (en) 2016-06-20 2017-12-28 Yeti Coolers, Llc Lid for container
KR101996541B1 (ko) * 2017-12-12 2019-07-04 주식회사 한화 덮개 구조체 및 이를 구비한 탄약의 발사통
DE102018104370B4 (de) * 2018-02-27 2020-12-03 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Vorrichtung zum Abdichten einer Ausnehmung in einem Objekt
US11426023B2 (en) * 2019-03-05 2022-08-30 Helen Of Troy Limited Beverage brewing apparatus
CN110158717A (zh) * 2019-06-10 2019-08-23 张文明 一种下水器的结构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1478918A (en) * 1922-01-11 1923-12-25 Rupp William Tap device for wooden barrels
US2906429A (en) * 1955-07-05 1959-09-29 American Flange & Mfg Closure plugs
US4768677A (en) 1986-10-21 1988-09-06 Nihon Radiator Co., Ltd Fuel tank cap
DE4440852C5 (de) * 1994-11-15 2006-02-09 Altmann, Otto, Dipl.-Ing. Verschlußvorrichtung für Flüssigkeitsbehälter, insbesondere Batteriestopfen sowie Verfahren zu deren Herstellung
CA2202944A1 (en) * 1996-05-06 1997-11-06 Douglas M. Mclelland Closure plug with bonded gasket
DE20215810U1 (de) 2002-10-15 2004-02-26 DURA Automotive Systems Köhler GmbH Tankdeckel mit Überdruckventil

Also Published As

Publication number Publication date
DE60315594D1 (de) 2007-09-27
NO327273B1 (no) 2009-06-02
BR0306963A (pt) 2004-12-14
RU2294870C2 (ru) 2007-03-10
JP4475388B2 (ja) 2010-06-09
DE60315594T2 (de) 2008-05-21
ES2292930T7 (es) 2012-03-16
CN1617820A (zh) 2005-05-18
BRPI0306963B1 (pt) 2015-06-23
WO2003062078A1 (en) 2003-07-31
RU2004124934A (ru) 2006-02-10
EP1467922B1 (en) 2007-08-15
CN100341753C (zh) 2007-10-10
PL200367B1 (pl) 2008-12-31
EP1467922A1 (en) 2004-10-20
NO20043428L (no) 2004-08-17
DE60315594T3 (de) 2013-01-31
PL370538A1 (en) 2005-05-30
ES2292930T3 (es) 2008-03-16
JP2005525271A (ja) 2005-08-25
AU2003202017B2 (en) 2008-02-14
ATE370078T1 (de) 2007-09-15

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