US3380618A - Plugs for container closures - Google Patents

Plugs for container closures Download PDF

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Publication number
US3380618A
US3380618A US573378A US57337866A US3380618A US 3380618 A US3380618 A US 3380618A US 573378 A US573378 A US 573378A US 57337866 A US57337866 A US 57337866A US 3380618 A US3380618 A US 3380618A
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US
United States
Prior art keywords
plug
rim
opening
wall
groove
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
US573378A
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English (en)
Inventor
Melville J Phillips
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.)
Rheem Australia Pty Ltd
Original Assignee
Rheem Australia Pty Ltd
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
Priority claimed from AU63532/65A external-priority patent/AU291997B2/en
Application filed by Rheem Australia Pty Ltd filed Critical Rheem Australia Pty Ltd
Application granted granted Critical
Publication of US3380618A publication Critical patent/US3380618A/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
    • B65D39/084—Separated bung-rings made by one element

Definitions

  • a plastic closure plug for sealing the opening in the top of a drum container or the like in a leak proof manner is described.
  • the plug includes a transverse base wall and an upwardly extending cylindrical side wall which is externally screw threaded at its lower end.
  • a circumferential rim extends outwardly from the upper end of the side wall and defines a plug seating face adapted to sealingly engage a peripheral seat about the opening in the drum or the like.
  • a circumferential groove extends into the upper end of the body portion at a location which is inwardly of the rim to permit inward flexing of the rim upon engagement of the rim with the seat in the opening so that any irregularities between the face and seat are accommodated to assure that a leak proof seal is obtained.
  • the invention relates to plugs of plastic materials adapted for closing the openings in drums or like containers.
  • plastic is intended to include any resilient material suitable for the purpose of the invention.
  • Words such as base and upwardly should not be interpreted restrictively since the opening to be closed might be in the side or bottom of the container.
  • Plugs wholly of plastic materials are known in the art but suffer certain defects as effective sealing means for various reasons, which normally necessitate the addition to them of a relatively costly separate gasket ring of rubber or the like.
  • the known plug is formed as a hollow section but requires integral internally projecting lugs which serve to act as leverage for screwing the plug in and out of the opening.
  • reinforcing ribs are embodied.
  • a second problem which is encountered in satisfactory sealing relates to the insert or flange which is adapted to the opening.
  • This insert normally of steel, is partly screw threaded and has a plain cylindrical wall extending upward and curling over the extruded opening in the container. The curled portion acts as a base seating for the plug.
  • the invention is a plastic plug having a transverse base wall, an upwardly extending approximately cylindrical side wall externally screw threaded around its lower end, a thickened upper end rim on the wall, the outside of the thickened rim being adapted to engage sealingly the adjacent upper surface of a flange secured in the container opening, and a continuous or discointinuous groove in the upper end surface of the rim extending at least part way around the rim.
  • the invention in another general form, is a plastic plug having a transverse base wall, an upwardly extending approximately cylindrical side wall externally screw threaded around its lower end, a thickened upper end rim on the wall with its lower outer part diverging upwards and its upper outer part converging upwards and an annular groove around the upper end face of the rim near its junction with its converging part.
  • the invention comprises a plug of plastic material which, when applied to a container opening, ensures that the mating surfaces of the plug and container opening are in complete contact to provide an effective leak proof seal.
  • FIG. 1 is a plan view of a plug in accordance with the invention.
  • FIG. 2 is a sectional view on the line 22 of FIG. 1.
  • FIG. 3 is an enlarged view of portion of FIG. 2;
  • FIG. 4 illustrates the plug applied to a container opening.
  • the plug consists of a base 1, a vertically extending cylindrical side wall 2 terminating at 3, a laterally extending rim comprising a lower conical surface 4 and an upper conical surface 5, lugs 6 to receive a spanner for purposes of insertion and removal of the plug, and reinforcing ribs 7, a portion of the vertical walls being screw threaded as shown at 8.
  • annular groove 9 At the external junction of sidewall 3 and conical surface 5 is shown an annular groove 9. Whilst in no way affecting the stability of the spanner lugs or screwed wall section, the formation of this groove permits a degree of flexibility in the rim and consequently, as pressure is applied in inserting the plug, suflicient localised movement in the plastic material is obtained to readily take up irregularities in either the plug surface or the container opening without the need to apply excessive pressure which could otherwise damage the thread or lug details.
  • the groove 9 of FIG. 2 now represented at 9a has been closed as pressure has been applied to insert the plug into the opening and effective sealing is obtained between surface 4 of plug and face 10 of flange inserted in opening.
  • the groove may be discontinuous.
  • a plastic closure plug adapted for sealing an opening in a drum or the like in a leak proof manner comprising a body portion having a substantially cylindrical outer surface which is externally screw threaded at its lower end nd has a circumferential outwardly extending rim at its upper end defining a plug seating face adapted to sealingly engage with a peripheral seat about the opening in said drum or the like, the upper end of said body portion having a circumferential groove inwardly of said outwardly extending rim permitting inward flexing of said rim upon engagement of said plug seating face with said opening seat to accommodate any irregularities bebetween said face and seat and assure a leak proof seal therebetween.
  • the plastic closure plug of claim 1 wherein the body portion of said plug includes a transverse base wall and an upwardly extending substantially cylindrical side wall which defines said substantially cylindrical outer surface, said outwardly extending rim being a thickened rim portion at the upper end of said side wall.
  • said thickened rim portion at the upper end of said side wall includes a lower outer circumferential part diverging outwardly in the upward direction to provide said plug seating face and an upper outer circumferential part converging inwardly in the upward direction and terminating in a generally transverse upper end surface, said groove being located in said upper end surface adjacent its junction with said upper outer part of said rim.
  • a plastic closure plug adapted for sealing an opening in a drum or the like in a leak proof manner comprising a body portion having a substantially cylindrical outer surface which is externally screw threaded at its lower end and has a circumferential outwardly extending rim at its upper end, said rim including a lower outer circircumferential part which diverges outwardly in the upward direction to provide a plug seating face adapted to sealingly engage with a peripheral seat about the opening in said drum or the like and an upper outer circumferential part converging inwardly in the upward direction and terminating in a generally transverse upper end surface, and a circumferential groove extending into said upper end surface adjacent its junction with said rim upper outer circumferential part permitting inward flexing of said rim upon engagement of said plug seating face with said opening seat to accommodate any irregularities between said face and opening seat and assure a leak proof seal therebetween.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US573378A 1965-09-01 1966-08-18 Plugs for container closures Expired - Lifetime US3380618A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU63532/65A AU291997B2 (en) 1965-09-01 Improvements in plugs for container closures

Publications (1)

Publication Number Publication Date
US3380618A true US3380618A (en) 1968-04-30

Family

ID=3748332

Family Applications (1)

Application Number Title Priority Date Filing Date
US573378A Expired - Lifetime US3380618A (en) 1965-09-01 1966-08-18 Plugs for container closures

Country Status (4)

Country Link
US (1) US3380618A (enrdf_load_stackoverflow)
BE (1) BE686321A (enrdf_load_stackoverflow)
GB (1) GB1114986A (enrdf_load_stackoverflow)
MY (1) MY6900278A (enrdf_load_stackoverflow)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912116A (en) * 1974-03-27 1975-10-14 Wm Chahley Ltd Tamper-resisting screw-threaded plug
US3937324A (en) * 1974-02-04 1976-02-10 Creative Tools, Inc. Container for marine storage of tools
US5111955A (en) * 1990-08-16 1992-05-12 Halliburton Company Non-metallic acid hatch
US5353944A (en) * 1992-08-19 1994-10-11 Halliburton Company Non-metallic hatch apparatus
US5413240A (en) * 1993-09-17 1995-05-09 Russell-Stanley Corporation Replaceable closure system
US5458257A (en) * 1992-08-19 1995-10-17 Halliburton Company Non-metallic blanking hatch apparatus
US5489041A (en) * 1992-08-19 1996-02-06 Halliburton Company Non-metallic obround blanking hatch apparatus
US5680953A (en) * 1993-11-16 1997-10-28 Rieke Corporation Plastic drum closure
US5862936A (en) * 1996-09-27 1999-01-26 Sonoco Products & Company Bung for a pressure vessel
US6364146B1 (en) * 2000-06-07 2002-04-02 Frank S. Beckerer, Jr. Access screw cover for containers and enclosures
USD491062S1 (en) 2003-06-24 2004-06-08 Rieke Corporation Threaded plug for a closure assembly
US20060138141A1 (en) * 2004-12-17 2006-06-29 Stolzman Michael D Reduced thickness cover
US20090156386A1 (en) * 2004-11-01 2009-06-18 Craig John Freeman Modification of alkaline earth silicate fibres
US7690526B1 (en) 2003-06-24 2010-04-06 Rieke Corporation Closure assembly
US20160009456A1 (en) * 2013-02-23 2016-01-14 Greif International Holding Bv Press in flange container closure system
US9567882B2 (en) 2002-12-16 2017-02-14 Hartmut Flaig Screw plug made of a metallic material, method for the production thereof, corresponding blank, and corresponding tool
USD940982S1 (en) * 2020-03-26 2022-01-11 Matrix Bottles, Llc Bucket lid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982649A (en) * 1975-01-30 1976-09-28 Denver Plastics, Inc. Bung for a barrel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2243290A (en) * 1938-08-20 1941-05-27 Barrel Fitting & Seal Corp Closure plug and sealing means therefor
US2746486A (en) * 1952-01-23 1956-05-22 Gratzmuller Jean Louis Fluid-tight assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2243290A (en) * 1938-08-20 1941-05-27 Barrel Fitting & Seal Corp Closure plug and sealing means therefor
US2746486A (en) * 1952-01-23 1956-05-22 Gratzmuller Jean Louis Fluid-tight assembly

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937324A (en) * 1974-02-04 1976-02-10 Creative Tools, Inc. Container for marine storage of tools
US3912116A (en) * 1974-03-27 1975-10-14 Wm Chahley Ltd Tamper-resisting screw-threaded plug
US5111955A (en) * 1990-08-16 1992-05-12 Halliburton Company Non-metallic acid hatch
US5353944A (en) * 1992-08-19 1994-10-11 Halliburton Company Non-metallic hatch apparatus
US5458257A (en) * 1992-08-19 1995-10-17 Halliburton Company Non-metallic blanking hatch apparatus
US5489041A (en) * 1992-08-19 1996-02-06 Halliburton Company Non-metallic obround blanking hatch apparatus
US5413240A (en) * 1993-09-17 1995-05-09 Russell-Stanley Corporation Replaceable closure system
US5971189A (en) * 1993-11-16 1999-10-26 Rieke Corporation Plastic drum closure
US5680953A (en) * 1993-11-16 1997-10-28 Rieke Corporation Plastic drum closure
US6065627A (en) * 1996-09-27 2000-05-23 Sonoco Development, Inc. Bung for a pressure vessel
US5862936A (en) * 1996-09-27 1999-01-26 Sonoco Products & Company Bung for a pressure vessel
US6364146B1 (en) * 2000-06-07 2002-04-02 Frank S. Beckerer, Jr. Access screw cover for containers and enclosures
US9567882B2 (en) 2002-12-16 2017-02-14 Hartmut Flaig Screw plug made of a metallic material, method for the production thereof, corresponding blank, and corresponding tool
USD491062S1 (en) 2003-06-24 2004-06-08 Rieke Corporation Threaded plug for a closure assembly
US7690526B1 (en) 2003-06-24 2010-04-06 Rieke Corporation Closure assembly
US20090156386A1 (en) * 2004-11-01 2009-06-18 Craig John Freeman Modification of alkaline earth silicate fibres
US20060138141A1 (en) * 2004-12-17 2006-06-29 Stolzman Michael D Reduced thickness cover
US20160009456A1 (en) * 2013-02-23 2016-01-14 Greif International Holding Bv Press in flange container closure system
US10427840B2 (en) * 2013-02-23 2019-10-01 Greif International Holding Bv Press in flange container closure system
USD940982S1 (en) * 2020-03-26 2022-01-11 Matrix Bottles, Llc Bucket lid

Also Published As

Publication number Publication date
BE686321A (enrdf_load_stackoverflow) 1967-03-01
GB1114986A (en) 1968-05-22
MY6900278A (en) 1969-12-31

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