US3323672A - Closure cap - Google Patents

Closure cap Download PDF

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Publication number
US3323672A
US3323672A US431844A US43184465A US3323672A US 3323672 A US3323672 A US 3323672A US 431844 A US431844 A US 431844A US 43184465 A US43184465 A US 43184465A US 3323672 A US3323672 A US 3323672A
Authority
US
United States
Prior art keywords
cap
lug
skirt
container
closure cap
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
US431844A
Other languages
English (en)
Inventor
Daniel D Acton
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.)
Anchor Hocking Glass Corp
Original Assignee
Anchor Hocking Glass Corp
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
Application filed by Anchor Hocking Glass Corp filed Critical Anchor Hocking Glass Corp
Priority to US431844A priority Critical patent/US3323672A/en
Priority to SE9408/65A priority patent/SE315828B/xx
Priority to BE668355D priority patent/BE668355A/xx
Priority to DE1486199A priority patent/DE1486199C3/de
Priority to FR28590A priority patent/FR1444544A/fr
Priority to LU49348A priority patent/LU49348A1/xx
Priority to NL6510856A priority patent/NL6510856A/xx
Priority to GB36942/65A priority patent/GB1074769A/en
Application granted granted Critical
Publication of US3323672A publication Critical patent/US3323672A/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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/045—Discs

Definitions

  • the present invention relates to the sealing art and more particularly to an improved closure cap and to a related container finish which cooperates with the cap to provide an improved sealed package.
  • the closure cap is for sealing threaded or logged conminers and has a series of concealed and inwardly projecting lugs at the lower edge of the cap skirt permitting the cap skirt itself to be relatively straight and smooth. This not only provides an attractive design form but also permits the skirt to be conveniently used for trademark and instructional indicia as Well as for decorative designs.
  • the cap has an improved tightly formed flexible lug which adapts the cap for accepting the tolerance extremes of closure cap, closure liner, and container finish.
  • a preferred container thread finish cooperates with the cap lugs to eliminateabrasion and chippage of the finish thread.
  • Safety seal liners have sealing membranes lightly adhered to inner cardboard cap liners. When the caps are applied to the containers, the membranes are adhered to the container rims to form an air tight seal. As the caps are removed from the containers, the membranes remain glued to the container rims and the cap strips the cardboard liner from the sealing membrane and lifts it from the sealed package.
  • the cap lug and container finish of this invention cooperate to accommodate for the tolerance extremes in liner thicknesses in such liners and provide a tight seal without lug damage or container thread abrasion or chippage.
  • an object of the present invention is to provide an improved closure cap.
  • Another object of the present invention is to provide an improved sealed package.
  • Another object of the present invention is to provide an improved closure cap having tightly formed and fleXible concealed lugs.
  • Another object of the present invention is to provide an improved closure cap having a safety seal liner.
  • FIG. 1 is a perspective view partially in section of a preferred embodiment of the closure cap
  • FIG. 2 is an enlarged fragmentary .sectional view of the closure cap of FIG. 1 applied to a container having a preferred thread finish;
  • FIG. 3 is an enlarged detailed sectional view showing the preferred embodiments of the lug and thread finish
  • FIG. 4 is a fragmentary elevational view of the inside of the cap skirt illustrating the shape of the improved lug.
  • FIG. 5 is a fragmentary bottom plan view of the cap skirt illustrating the shape of the lug.
  • the closure cap 1 in accordance with the present invention comprises a cover 2 and depending skirt 3.
  • the skirt 3 preferably has a smooth surface to facilitate decoration and also to provide a closure cap 1 with an attractive appearance.
  • the cover 2 also is relatively fiat facilitating decoration, however, as best illustrated in FIG. 2 a stacking panel 4 is provided on the cover by the formation of a circular channel 5 at the outer edge of the cap cover 2 adjacent to the skirt 3.
  • the outer edge of the channel 5 is defined by the top portion of the skirt 3and the inner edge is defined by an inclined wall 6.
  • the channel 5 and the stacking panel 4 are com veniently formed during the drawing step when a fiat disc of the cap forming metal is drawn into a cup-like blank.
  • each of the lugs 8 includes an inner container thread engaging portion comprising a double thickness of the cap material formed into a tight fold 9.
  • the lug 8 is formed to include an upwardly and inwardly inclined lower portion 10 extending to the thread engaging fold 9 which is positioned about centrally of the depth of the skirt head 7.
  • the lugs 8 are formed as shown in FIG. 4 so that the fold 9 extends generally level or parallel to the lower edge of the skirt 3 and with the level fold 9 comprising a substantial portion of the circumferential length of each lug. As illustrated in FIG.
  • lugs 8 which is a bottom plan view of a lug '8, the lugs 8 are seen to extend radially inwardly for a substantial distance along a major portion of their circumferential length with the fold 9 having a slightly arcuate shape when viewed in this direction.
  • the logs 8 of the closure cap 1 engage a series of inclined threads 11 on a container 12.
  • a preferred cross section of the threads '11 is illustrated wherein the folds 9 of the lugs 8 engage the lower surfaces 13 of the threads.
  • the lower surfaces 13 in cross section are upwardly and outwardly inclined and are relatively straight intermediate their curved end portions.
  • the cap 1 of the present invention is particularly useful with caps having paperboard liners and particularly those having safety seal [liners of the well-known type wherein an air-tight membrane 14 is used to seal the container mouth.
  • this membrane 14 is preferably initially and lightly attached to a paperboard liner 15 of sufiicient thickness to be relatively stiff.
  • the liners 15 and the attached membranes 14 are placed in the finished closures 1 prior to the sealing operation and the cap lugs -8 retain the liners 15 and sealing membranes 14 in position during the cap handling and sealing operations.
  • the edge of the stacking panel 4 of the cap top be above at least a portion of the container rim 16 so that it engages the liner 15 during and after the sealing operation as illustrated in FIG. 2.
  • the channel 5 forming the stacking panel 4 is preferably relatively narrow and a preferred channel positions the inner edge 6 of the channel so that it is approximately above the inner edge of the cap lugs 8 as seen in FIG. 2.
  • the sealing membrane 14 and liner 15 extend radially outwardly to a position over lugs 8 to insure the retention of the liners 15 within the caps before and during sealing and also to insure that the cap lugs 8 remove the paperboard liner portions 15 when the closure caps 1 are removed from the sealed containers 12 thus insuring that the paperboard liners 15 are stripped clear of the package sealing membranes 14.
  • an improved closure cap has been provided combining the advantages of a. tightly formed, flexible, concealed in lug and a smooth, straight skirt.
  • This combination of features provides a cap uniquely suited for packaging products heretofore commonly packaged using caps of the continuous thread type and having irregular skirt surfaces.
  • the cap has a novel lug structure formed by a related novel lug forming process wherein concealed lugs are provided with the ability to accept the extremes of closure, liner, and container finish tolerances.
  • a container finish thread is provided which cooperates with the novel lug to eliminate abrasion and chippage of the container finish thread.
  • the capability of the lug and package to accept extremes of liner thickness tolerances makes the cap particularly suitable for use with paperboard liners including those used with safety seal membranes. Consistently air-tight seals are obtained using such safety seal liners with the improved cap.
  • a closure cap for sealing a container and having a cover and a depending skirt with an inwardly rolled bead at the lower edge of the skirt and a plurality of circumferentially spaced lugs projecting inwardly therefrom the improvement which comprises an outwardly directed tight fold at the inner edge of each lug extending along a minor portion only of the radial width of the lug, and
  • closure cap as claimed in claim 1 which further comprises a downwardly facing channel at the outer portion of said cap cover forming a stacking panel and having its inner wall positioned above the folded edges of said lugs.
  • closure cap as claimed in claim 1 which further comprises a cut cap liner extending radially outwardly beyond the inner edges of said lugs.
  • closure cap as claimed in claim 1 which further comprises a cut cap liner in said cap having an air impervious membrane on its surface opposite to the cap cover for engaging the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US431844A 1965-02-11 1965-02-11 Closure cap Expired - Lifetime US3323672A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US431844A US3323672A (en) 1965-02-11 1965-02-11 Closure cap
SE9408/65A SE315828B (ja) 1965-02-11 1965-07-16
DE1486199A DE1486199C3 (de) 1965-02-11 1965-08-17 Verschlußkappe zum Abdichten eines an seiner öffnung mit Gewinde versehenen Behalters
FR28590A FR1444544A (fr) 1965-02-11 1965-08-17 Bouchon de fermeture et son procédé de fabrication
BE668355D BE668355A (ja) 1965-02-11 1965-08-17
LU49348A LU49348A1 (ja) 1965-02-11 1965-08-18
NL6510856A NL6510856A (ja) 1965-02-11 1965-08-19
GB36942/65A GB1074769A (en) 1965-02-11 1965-08-27 Closure caps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US431844A US3323672A (en) 1965-02-11 1965-02-11 Closure cap

Publications (1)

Publication Number Publication Date
US3323672A true US3323672A (en) 1967-06-06

Family

ID=23713690

Family Applications (1)

Application Number Title Priority Date Filing Date
US431844A Expired - Lifetime US3323672A (en) 1965-02-11 1965-02-11 Closure cap

Country Status (7)

Country Link
US (1) US3323672A (ja)
BE (1) BE668355A (ja)
DE (1) DE1486199C3 (ja)
GB (1) GB1074769A (ja)
LU (1) LU49348A1 (ja)
NL (1) NL6510856A (ja)
SE (1) SE315828B (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786954A (en) * 1971-10-18 1974-01-22 Anchor Hocking Corp Closure cap liner
US4392580A (en) * 1981-07-21 1983-07-12 Anchor Hocking Corporation Closure cap
US5230427A (en) * 1991-06-12 1993-07-27 Ppg Industries, Inc. Sterilizable hermetically-sealed substantially glass container
US6968965B1 (en) 2003-10-03 2005-11-29 Cunningham Kelly W Container closure assembly
US20090236353A1 (en) * 2008-03-20 2009-09-24 Crown Packaging Technology, Inc. Closure edge protection via polymer coated metal
US20160152384A1 (en) * 2014-04-11 2016-06-02 Silgan White Cap LLC Metal Closure With Low Pressure Engagement Lugs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1684415A (en) * 1927-03-05 1928-09-18 Schriver Flavius Randolph Container closure
US2089954A (en) * 1935-03-06 1937-08-17 Anchor Cap & Closure Corp Closure cap and method of making
US2148169A (en) * 1932-09-30 1939-02-21 Empire Metal Cap Co Inc Receptacle closure and method of manufacture thereof
US3134496A (en) * 1961-09-11 1964-05-26 Continental Can Co Closure member gasket compositions

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1684415A (en) * 1927-03-05 1928-09-18 Schriver Flavius Randolph Container closure
US2148169A (en) * 1932-09-30 1939-02-21 Empire Metal Cap Co Inc Receptacle closure and method of manufacture thereof
US2089954A (en) * 1935-03-06 1937-08-17 Anchor Cap & Closure Corp Closure cap and method of making
US3134496A (en) * 1961-09-11 1964-05-26 Continental Can Co Closure member gasket compositions

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3786954A (en) * 1971-10-18 1974-01-22 Anchor Hocking Corp Closure cap liner
US4392580A (en) * 1981-07-21 1983-07-12 Anchor Hocking Corporation Closure cap
US5230427A (en) * 1991-06-12 1993-07-27 Ppg Industries, Inc. Sterilizable hermetically-sealed substantially glass container
US6968965B1 (en) 2003-10-03 2005-11-29 Cunningham Kelly W Container closure assembly
US7293396B1 (en) 2003-10-03 2007-11-13 Cunningham Kelly W Method of connecting a top to a container
US20090236353A1 (en) * 2008-03-20 2009-09-24 Crown Packaging Technology, Inc. Closure edge protection via polymer coated metal
US8210377B2 (en) 2008-03-20 2012-07-03 Crown Packaging Technology, Inc. Closure edge protection via polymer coated metal
US20160152384A1 (en) * 2014-04-11 2016-06-02 Silgan White Cap LLC Metal Closure With Low Pressure Engagement Lugs
US9694946B2 (en) * 2014-04-11 2017-07-04 Silgan White Cap LLC Metal closure with low pressure engagement lugs
US10364070B2 (en) 2014-04-11 2019-07-30 Silgan White Cap LLC Metal closure with low pressure engagement lugs

Also Published As

Publication number Publication date
LU49348A1 (ja) 1965-10-18
SE315828B (ja) 1969-10-06
DE1486199A1 (de) 1969-04-03
BE668355A (ja) 1965-12-16
NL6510856A (ja) 1966-08-12
GB1074769A (en) 1967-07-05
DE1486199C3 (de) 1980-06-04
DE1486199B2 (de) 1974-03-21

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