US3229842A - Crown closure - Google Patents

Crown closure Download PDF

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Publication number
US3229842A
US3229842A US354050A US35405064A US3229842A US 3229842 A US3229842 A US 3229842A US 354050 A US354050 A US 354050A US 35405064 A US35405064 A US 35405064A US 3229842 A US3229842 A US 3229842A
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US
United States
Prior art keywords
crown closure
crown
closure
container
metal shell
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
US354050A
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English (en)
Inventor
Antoine J Leenaards
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.)
Crown Cork and Seal Co Inc
Original Assignee
Crown Cork and Seal Co Inc
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 Crown Cork and Seal Co Inc filed Critical Crown Cork and Seal Co Inc
Priority to US354050A priority Critical patent/US3229842A/en
Priority to BE660640D priority patent/BE660640A/xx
Priority to NL6503310A priority patent/NL6503310A/xx
Priority to ES0310719A priority patent/ES310719A1/es
Priority to FR10221A priority patent/FR1426787A/fr
Application granted granted Critical
Publication of US3229842A publication Critical patent/US3229842A/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
    • B65D41/10—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts
    • B65D41/12—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts made of relatively stiff metallic materials, e.g. crown caps

Definitions

  • the present invention relates generally to container seals or closures, and more particularly, to an improved crown closure for containers such as bottles of glass, plastic or other suitable material.
  • Crown closures of the type contemplated in the instant invention are commonly employed to effect the closure and sealing of glass bottles containing carbonated beverages or other liquids capable of exerting internal pressure.
  • glass bottles typically have a standard glass finish which includes a circumferential radially outwardly projecting bead having a rounded profile adjacent to and surrounding, the opening or mouth of the bottle.
  • the gasket or liner is initially compressed between the metal of the crown cap and the rounded, generally upwardly facing, sealing surface of the glass finish at the mouth of the bottle to form a seal therebetween.
  • a suitable die means such as a tapered sealing throat engages the lower edge of the fiuted skirt of the crown closure upon axial displacement relative thereto, so as to radially compress and deform such fluted skirt portion of the closure inwardly to wedge the lower portions of the skirt flutings under the bead and thereby retain the crown closure in sealing engagement with the mouth of the bottle.
  • This action not only provides locking engagement of the crown closure with the bead, but also generally results in some further compression of the gasket.
  • the crown shells have been made of tin plate of sufiicient thickness and rigidity to resist substantial fiexing or bulging after application and crimping thereof to the container mouth, as aforedescribed, so as to be firm and unyielding thereon until distorted in the operation of intentionally removing the cap.
  • tin plate of sufiicient thickness and rigidity to resist substantial fiexing or bulging after application and crimping thereof to the container mouth, as aforedescribed, so as to be firm and unyielding thereon until distorted in the operation of intentionally removing the cap.
  • a crown closure be constructed of relatively inexpensive light gauge metal and that the crown closure readily lend itself to removal from a container to which it has been applied without the necessity of substantial permanent deformation of the metal crown shell, but also that such benefits be attained without compromising the dependability or operativeness of the initial seal effected by the crown closure.
  • a principal object of the present invention is to provide an improved crown closure.
  • An additional object of the present invention is to provide an improved crown closure which is more economical to produce than comparable closures of the prior art, but also fully as effective, as regards sealing capacity and dependability.
  • Another object of the present invention is to provide an improved crown closure which can be formed from lighter gauge metal than heretofore possible.
  • a further object of the present invention is to provide an improved crown closure for glass bottles containing carbonated beverages or other liquids capable of exerting internal pressure, which can be formed from lighter gauge metal than heretofore possible and is thus more economical to produce than comparable crown closures of the prior art.
  • a still further object of the present invention is to provide an improved crown closure for glass bottles which is formed from lighter gauge metal than heretofore possible which can be applied to such bottles to seal the same by existing production facilities Without expensive modification and redesign thereof.
  • Another object of the present invention is to provide an improved crown closure for sealing bottles containing carbonated beverages 0r other liquids capable of exerting Y internal pressure which is particularly adapted to be removed from the bottle without excessive permanent deformaton thereof and be reapplied by hand to the bottle to effect a resealing thereof.
  • An additional object of the present invention is to provide an improved crown closure for glass bottles which is v more economical to produce than comparable closures of the prior art and permits not only an effective tight sealing of the bottle in the first instance but also readily lends itself to an unsealing thereof without substantial permanent deformation of the crown closure shell so that the crown closure may be repeatedly applied to the bottle to effectively reseal the same.
  • FIGURE 1 is a perspective view of a crown closure embodying this invention prior to its application to a container;
  • FIGURE 2 is a plan view of the crown closure shown in FIGURE 1;
  • FIGURE 3 is an enlarged sectional side view taken taken along the line 3-3 of FIGURE l;
  • FIGURE 4 is a perspective view of a prior art standard crown closure
  • FIGURE 5 is an enlarged side elevational view of the neck portion of a glass bottle having a standard glass iinish with the mouth of the bottle sealed by a crown closure embodying this invention.
  • FIGURE 6 is an enlarged side elevational view in section of thevneck portion of a glass bottle having an irnproved crown closure receiving nish adapted to facilitate removal of a crown closure with the mouth of the bottle sealed by a crown closure embodying this invention.
  • crown cap or closure 10 having a generally hat-shaped metal shell 12 formed from relatively light gauge metal, such as 55 pound tin plate having a thickness of about 0.0061 inch, embodying the present invention.
  • the metal shell 12 includes a slightly domed, circular top portion 14 and a substantially cylindrical skirt 16 ydepending therefrom having substantially smooth cylindrical outer and inner surfaces 18 and 20, respectively, and terminating in an annular undulatory locking flange 22 extending radially outward of, and at substantially right angles to, the smooth cylindrical skirt 16.
  • circular top portion 14 has been described and is shown in the drawings as being slightly domed so as to present a slightly convex outer surface 24 and a slightly concave inner surface 26, it will be apparent that the circular top portion 14 can be substantially at so as to present substantially plain outer and inner surfaces.
  • the smooth cylindrical skirt 16 merges with the circular top portion 14 of the metal shell 12 in a smooth inwardly flaring annular transition portion 28 which is rounded in radial section so as to define similarly rounded annular outer and inner transition surfaces 30 and 32, respectively.
  • the krounded annular outer transition surface 30 smoothly merges with the outer surfaces 18 and 24 of the cylindrical skirtk 16 and circular top portion 14, respectively, while the rounded annular inner transition surface 32 similarly merges with the inner surfaces 20 and 26 of the cylindrical skirt 16 and ycircular top portion 14, respectively.
  • the radially extending annular locking ange 22 is given an undulatory form by being provided circumferentially with multitudinous corrugations 34 of substantially identical form.
  • the .corrugations 34 each merge with the cylindrical skirt.16 in a relatively sharply rounded juncture 36, having a relatively small radius in radial section, and extend radially outward therefrom to the peripheral edge 38 of the annular locking ange 22.
  • corrugations 34 will be seen to compriseH kneeformingdownwardly projecting utes or ribs 38 formed by radially extending downwardly converging wall portions 40 which mergeiin a rounded or slightly flattened radially extending juncture42, alternatingwith similarly shaped upwardly projecting ridges A44 formed by. up-
  • the multitudinous corrugations 34 not only add great ⁇ strength and rigidity to the annular locking flange 22,1but
  • a relatively thin gasket or liner 50 of compressible molded resilient material such as a suitable thermoplastic or elastomeric material compounded so as to be odorless and tasteless and to be free from effects on, or to be affected by, ordinary foods or liquids which may be stored in the container.
  • the liner 50 comprises a vinyl chloride plastisol such as has been illustrated and described in U.S. Patent 3,002,641.
  • the plastisol liner 50 will be deformed during the capping operation so as to conform to, and be in intimatey sealing engagement with, the opposed sealing surface of the container or bottle.
  • the cylindrical skirt 16 is thus relatively shallow, i.e., of relatively short axialextent as compared to standard crown closures, since it need accommodate only a relatively thin gasket or liner 50. ⁇
  • the aforedescribed construction of the crown closure 10 employing an extremely light gauge metal shell 12 according to the present invention is in direct contrast to the conventional prior art construction of a standard crown i closure 52 employing a heavy gauge metal shell 54 shown ⁇ in FIGURE 4 of the drawings.
  • the prior art crown closure 52 includes a metal shell 54 formed from relatively heavy gauge metal such as from to 107 pound tin plate having a thickness in the neighborhood of 0.012 inch.
  • the metal shell 54 includes a top portion 56 and a depending outwardly flared ltinted skirt 58 terminating in a peripheral edge 60.
  • the skirt 58 is provided with rela- ⁇ shown the neck portion 66 of a glass bottle 68 with my4 novel crown closure 10 secured in operative sealing ⁇ engagement with a crown closure receiving standard glass nish.
  • the standard glass finish 70 will be seen to in- ⁇ clude a circumferential radially outwardly projecting bead 72 having a rounded profile surmounting the neck 66 tof the bottle 68 so as to surround the mouth thereof.
  • the undulating locking ange t 22 has, under the influence of a suitable capping die .(not shown), been deformed downwardly and radially inwardly so as to dispose multitudinous'relatively short inwardly p projecting locking knees 74, formed by the innermost portions of the radially extending flutes or ribs 38, belowthe maximum kcircumference of the bead 72 and in seal retaining gripping engagement with the underside 76 of the bead 72. ⁇
  • thefcrown closure 10 By virtue of the increased strength and rigidity imparted to the metal shell 12 by the multitudinous corrugations 34, thefcrown closure 10 Will be reliably and effectively retained in sealing engagement with the mouth of the bottle 68 by the multitudinous locking knees 74 even under the substantial internal container pressures generated by carbonated beverages and the like. Moreover,-
  • the crown closure 10 can be removed from sealing engagement with the bottle 68 'with a minimum amount of camming force and permanent distortion by means of the well-known conventional opener or prizing tool (not shown).
  • FIGURE 6 of the drawings wherein there is shown the neck portion 78 of a glass bottle 80 having an improved crown closure receiving finish 82 with my novel crown closure secured in operative sealing engagement therewith.
  • the improved crown closure receiving finish 82 is more fully described in the copending application of Joseph J. Waters, entitled Container and filed January 31, 1964, the disclosure of which is incorporated herein by reference.
  • the improved crown receiving finish 82 generally incldues an annular upwardly facing flat sealing surface 84, an outwardly facing longitudinally extending cylindrical surface 86 and an annular upwardly diverging beveled or conical closure gripping surface 88.
  • the conical gripping surface 88 and the outwardly facing cylindrical surface merge at a relatively sharp slightly rounded annular gripping edge surface 90 having a very small radius, preferably not exceeding 0.025 inch.
  • the undulating locking flange 22 has, under the influence of a suitable capping die (not shown), been crimped by being deformed downwardly and sharply bent inwardly about the small radius of the relatively sharp annular gripping edge surface 90 of the improved finish 82 so as to form and dispose multitudinous relatively short locking knees 74' formed by the innermost portions of the radially extending flutes or ribs 38 in intimate gripping contact with the conical gripping surface 88.
  • the short locking knees 74 merge with the outwardly diverging or :daring corrugated marginal edge portion of the locking flange 22 in kneelike radially inwardly facing arcuate surfaces 92.
  • the locking knees 74 need only extend a relatively short distance inwardly of the maximum outside diameter of the finish 82.
  • a minimum or limited amount of distortion of the metal shell 12 of the crown closure 10 is necessary to effect sufficient outward movement of the locking flange 22 so as to permit the knee-like arcuate surfaces 92 to clear the outer cylindrical surface 86 of the finish 82 and thereby effect removal of the crown closure 10.
  • My novel crown closure 10 has been found to have particular utility in sealing a glass bottle provided with the improved crown receiving finish 82 since the greater resiliency of the relatively thin gauge metal shell 12 readily lends itself to removal therefrom without substantial permanent deformation of the metal shell 12. It will therefore be apparent that since there will not be substantial permanent deformation of the metal shell 12 of my novel crown closure 10 during the initial intentional removal operation, the grip between the locking knees 74 and the conical gripping surface 88 of the closure receiving finish 82 may readily be reestablished by merely pressing the crown closure 10 over the finish 82. Incident to such reapplication of the crown closure 10 to the improved crown closure receiving finish 82, the liner 50 will again be pressed in sealing engagement with the annular sealing surface 84.
  • the neck 78 of the bottle 80 is provided with a suitable camming surface 96 spaced axially below the conical gripping 6 surface 88, which is adapted to act as a fulcrum point for the coin 94 which is twisted as shown by the arrow A to effect removal of the crown closure 10 from sealing engagement with the bottle 80, as more fully described in the aforementioned copending application of Joseph I. Waters.
  • a crown closure adapted to be applied to sealingly engage the mouth of a container comprising in combination: a metal shell formed from relatively light gauge metal having a thickness of about 0.0061 inch as compared with the 0.012 inch thickness of a standard crown closure, ⁇ said metal shell comprising, a circular top portion, a substantially smooth cylindrical skirt depending from said circular top portion, and an integral annular locking flange extending radially outward of said smooth cylindrical skirt, said annular locking flange being provided with multitudinous radially extending corrugations comprising at least 40 downwardly projecting ribs alternating with at least 40 upwardly projecting ridges in order to strengthen ysaid metal shell; and a molded resilient liner secured to the inner surface of said circular top portion adapted to sealingly engage the container whereby when said crown closure is operatively applied to the container, said strengthened locking flange will retain said liner in sealing engagement with the container.
  • a crown closure comprising in combination: a metal shell formed from relatively light gauge metal having a thickness of about 0.0061 inch as compared with the 0.012 inch thickness of a standard crown closure, said metal shell comprising, a circular top portion, a substantially smooth cylindrical skirt depending from said circular top portion, and an integral annular locking flange

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US354050A 1964-03-23 1964-03-23 Crown closure Expired - Lifetime US3229842A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US354050A US3229842A (en) 1964-03-23 1964-03-23 Crown closure
BE660640D BE660640A (US06312121-20011106-C00033.png) 1964-03-23 1965-03-04
NL6503310A NL6503310A (US06312121-20011106-C00033.png) 1964-03-23 1965-03-16
ES0310719A ES310719A1 (es) 1964-03-23 1965-03-18 Un dispositivo de cierre del tipo de tapon corona destinado a ser aplicado hermeticamente a la boca de una botella o recipiente similar.
FR10221A FR1426787A (fr) 1964-03-23 1965-03-22 Bouchon-couronne multidents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US354050A US3229842A (en) 1964-03-23 1964-03-23 Crown closure

Publications (1)

Publication Number Publication Date
US3229842A true US3229842A (en) 1966-01-18

Family

ID=23391684

Family Applications (1)

Application Number Title Priority Date Filing Date
US354050A Expired - Lifetime US3229842A (en) 1964-03-23 1964-03-23 Crown closure

Country Status (4)

Country Link
US (1) US3229842A (US06312121-20011106-C00033.png)
BE (1) BE660640A (US06312121-20011106-C00033.png)
ES (1) ES310719A1 (US06312121-20011106-C00033.png)
NL (1) NL6503310A (US06312121-20011106-C00033.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030041568A1 (en) * 2001-09-04 2003-03-06 Seidita Thomas M. Crown-like twist-off closure
US20050029218A1 (en) * 2003-08-08 2005-02-10 Richard Golding Fluted crown cap
IT202100025805A1 (it) 2021-10-08 2023-04-08 Sacmi Chiusura a corona e stampo per realizzarla

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956215A (en) * 1932-11-26 1934-04-24 Crown Cork & Seal Co Container closure
US2543775A (en) * 1949-04-01 1951-03-06 Gora Lee Corp Container closure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956215A (en) * 1932-11-26 1934-04-24 Crown Cork & Seal Co Container closure
US2543775A (en) * 1949-04-01 1951-03-06 Gora Lee Corp Container closure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030041568A1 (en) * 2001-09-04 2003-03-06 Seidita Thomas M. Crown-like twist-off closure
US8495854B2 (en) * 2001-09-04 2013-07-30 Obrist Closures Switzerland Gmbh Crown-like twist-off closure
US20050029218A1 (en) * 2003-08-08 2005-02-10 Richard Golding Fluted crown cap
IT202100025805A1 (it) 2021-10-08 2023-04-08 Sacmi Chiusura a corona e stampo per realizzarla

Also Published As

Publication number Publication date
NL6503310A (US06312121-20011106-C00033.png) 1965-09-24
ES310719A1 (es) 1965-10-01
BE660640A (US06312121-20011106-C00033.png) 1965-09-06

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