US3804283A - Composite closure cap - Google Patents

Composite closure cap Download PDF

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Publication number
US3804283A
US3804283A US00278187A US27818772A US3804283A US 3804283 A US3804283 A US 3804283A US 00278187 A US00278187 A US 00278187A US 27818772 A US27818772 A US 27818772A US 3804283 A US3804283 A US 3804283A
Authority
US
United States
Prior art keywords
closure
fitment
closure lid
section
channel
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
US00278187A
Other languages
English (en)
Inventor
H Frankenberg
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.)
Continental Can Co Inc
Original Assignee
Continental Can 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 Continental Can Co Inc filed Critical Continental Can Co Inc
Priority to US00278187A priority Critical patent/US3804283A/en
Priority to ZA731158A priority patent/ZA731158B/xx
Priority to DE2334730A priority patent/DE2334730C2/de
Priority to GB3591873A priority patent/GB1432057A/en
Priority to AU58925/73A priority patent/AU471220B2/en
Priority to IT27621/73A priority patent/IT993694B/it
Application granted granted Critical
Publication of US3804283A publication Critical patent/US3804283A/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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings or strips; Use of seals
    • B65D55/08—Annular elements encircling container necks
    • B65D55/0863—Plastic snap-on cap-like collars having frangible parts

Definitions

  • one of the important improvements and innovations is in having the plastic fitment or overcap provided with an outer annular section including a downwardly opening channellike'margin which rides in spaced relationship on a downwardly'opening gasket-lined channel on a closure lid or panel carried in the' fitment so as to provide shock absorbing action from straight-down blows.
  • a further innovation and improvement is in having the gasketlined closure lid retained snugly within the plastic outer fitment or overcap but with provision for limited relative vertical movement therebetween so as to prevent accidental lifting or dislodgment of the lid before it is intended that a package sealed therewith be opened.
  • Still another innovation and improvement is in having the overcap or plastic fitment provided with an inwardly extending annular flange in the top portion which resiliently presses down on the top of the center panel portion of the closure lid so that there is no open space therebetween.
  • the object of the present invention is the provision of composite closure caps for press-on application in high speed capping machines and easy pull-off removal by hand incorporating the abovementioned innovations and improvements which may be economically mass-produced with a high degree of uniformity and conformance to specifications.
  • FIG. 1 is a top plan view of such'a composite closure
  • FIG. 2 is a top perspective view illustrating the manner in which the composite closure cap may be removed from a container;
  • FIG. 3 is a vertical sectional view of the composite closure cap taken on line 3-3 of FIG. 1;
  • FIG. 4 is a fragmentary sectional view on enlarged scale showing the relationship between the composite closure cap of FIG. 1-3 and the top seal finish of a container.
  • a composite closure cap indicated generally at 5 comprises an outer integrally formed plastic fitment or overcap 6 which snugly retains therein a gasketed closure lid 7.
  • the fitment 6 may be injection molded in multiple cavity molds in large quantities from any suitable plastic material such as polystyrene, polyethylene, polypropylene, etc. It will be understood that the plastic material will be selected so as to have the appropriate physical properties including ability to withstand such handling and processing conditions and temperatures as may be required in connection with applying the composite closure caps 5 to products filled with various foods or other contents.
  • suitable plastic material such as polystyrene, polyethylene, polypropylene, etc. It will be understood that the plastic material will be selected so as to have the appropriate physical properties including ability to withstand such handling and processing conditions and temperatures as may be required in connection with applying the composite closure caps 5 to products filled with various foods or other contents.
  • the fitment 6 has a top portion which includes an outer annular section 8 (FIG. 1) and an inner lift ring or tab 10.
  • a generally cylindrical skirt portion 11 integrally depends from the periphery of the outer annular section 8.
  • the outer annular section 8 has a downwardly opening channel-like margin 12 (FIG. 3) and an annular flange 13 extending radially inwardly therefrom.
  • the flange 13 is made so as in the free condition to be downwardly inclined at a slight angle, eLg. 5, from the horizontal and thereby press down on the central portion 14 (FIG. 4) of the closure lid 7 leaving no space between the inner free edge of the flange 13 and the lid. This prevents dirt or foreign material from collecting under the flange l3 and the appearance of the closure cap 5 is enhanced.
  • the downwardly opening channel-like margin 12 has a roof or top portion 15 (FIG. 4) and inner and outer sidewall portions 15 and 17, respectively.
  • the skirt 11 of the overcap or plastic fitment 6 is provided on the interior with aplurality of circumferentially extending lugs or bosses 18-18 (FIGS. 3 and 4) the upper surfaces of which serve to provide supporting surfaces for the circumferential outer edge 20 of the closure lid 7.
  • each groove 21 preferably has three surfaces, i.e., an upper surface 22 which joins a lower or intermediate surface 23 which in turn joins or merges with a still lower or bottom surface 24.
  • the surfaces 22 and 24 form acute angles with respect to the vertical while the surface 23 forms a smaller or shallower acute angle to the vertical than does the surface 24. While three distinct surfaces 22, 23 and 24 are shown in enlarged scale in FIG. 4, it will be appreciated that if desired, these surfaces could be smoothly blended into a continuous surface having different portions generally corresponding to surfaces 22, 23 and 24. The relationship of the surfaces 22, 23 and 24 or their functional equivalent of each groove 21 is important with respect to their engagement with portions of the closure lid 7 as will be explained.
  • the closure lid 7 in addition to the continuous center panel portion 14 has an annular groove 25 surrounding the center panel 14 and radially outwardly therefrom an integral downwardly opening lined channel 26.
  • the channel 26 is of generally an inverted-U shape and is lined with a gasket or sealant 27 of known composition so as to form a hermetic seal with the top seal finish 28 on the rim 30 of a container indicated generally at 31.
  • the closure lids 11 may be produced in known manner as by stamping from enameled or lacquered sheet metal after which the gaskets 27 may be suitably introduced and cured or fluxed as required.
  • the container 31 shown is formed of metal but it will be understood that it could also be formed of glass or plastic.
  • the container has a circumferential bead 32 formed directly below the rim or top opening 30 and the dimension of the bead 32 is such that it extends radially outwardly beyond the outer surface of the skirt 11 of the closure cap 5. Accordingly, when the capped containers 31 are placed sidewise against another such as in packing into larger containers the beads 32 will engage each other and absorb sidewise blows thereby protecting the skirts ll of the closure caps 5 from these sidewise blows that might dislodge the closure lids and break the seals provided thereby.
  • the terminal edge 20 of a closure lid 7 engages the intermediate lower surface 23 provided by each of the lugs 18 normally at a point slightly above the line where the surfaces 23 intersect the surfaces 24.
  • This place of normalengagement allows the outer plastic fitments 6 to be moved upwardly a small distance relative to the closure lids 7 without unsealing or lifting the closure lids so as to break the sealformed between the gasket 27 and the top seal finish 28 of the container mouth.
  • the steepness of the surfaces 23 is such that relative movement between the terminal edge 20 and the surfaces 23 is relatively easy.
  • the angles of the surfaces 24 are such that relative movement is prevented and these surfaces act primarily as lifting surfaces.
  • the gasketed closure lids 7 may be readily assembled into the plastic fitments or overcaps 6 so as to form the composite closure caps 5.
  • the closure caps may be applied with known commercially available capping machines vto filled containers 31 at high rates of speed preferably by introducing steam into the small head spaces of the filled containers. When the steam condenses in the head spaces with the closure caps in place, the ensuing vacuum perfects the resulting hermetic seals and firmly retains the closure caps in place against inadvertent or unintentional displacement or removal. In the capping process the closure caps 5 are pressed down on the filled containers allowing capping speeds in the order of 1,000 or more containers per minute in one machine.
  • the user grasps the lift ring or tab 10 and pulls upwardly thereon thereby initially breaking the frangible connections 35 between the lift ring and the inner edge of the flange 13 but leaving the lift ring 10 securely attached to the skirt portion 11 through the integral hinge 36.
  • Continued lifting of the ring or tab 10 causes the bottom surface or surfaces 24 on one or more of the lugs 18 in the vicinity of the hinge 36 to engage under the terminal edge 20 and thereby break the vacuum after which the closure lid 7 may be readily removed from the container 31.
  • the close spacing at 37 (FIG. 4) between the bottom edge of the skirt ll of a closure cap 5 and the adjacent sidewall of the container 31 serves to keep out debris and foreign objects.
  • a composite closure for press-on application and pull-off removal with respect to a container having a top opening with an annular top seal finish said composite closure comprising an outer integrally-formed plastic fitment and a gasketed closure lid carried within I said fitment, said fitment having a top portion which includes an outer annular section with an inner lift ring and a generally cylindrical skirt portion depending from the periphery of said outer annular section, said outer annular section having a downwardly opening channel-like margin and a radially inwardly extending flange on the inner sidewall of said margin and said skirt portion having a plurality of circumferentially extending lugs on the interior thereof with an inwardly opening groove above each of said lugs with the lower side of each groove being formed by the upper side of its associated lug, said closure lid having a continuous center panel section and an integral downwardly opening gasket-lined channel the outer sidewall of which terminates in a terminal edge, the sidewalls of said fitments downwardly opening channel-like margin riding on the upper side of said
  • each of said inwardly opening grooves has an upper section which is at a slight angle from the vertical and a lower section which is at an appreciably greater angle from the vertical with said terminal edge of said closure lid normally engaging said upper section whereby lifting of said fitment relative to said closure lid when retained by vacuum on a container permits said closure lid to remain seated on said top seal finish until a lower section of at least one of said inwardly opening grooves engages said terminal edge.
  • closure cap of claim 1 wherein said integral downwardly opening gasket'lined channel of said closure lid is generally of inverted U-shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
US00278187A 1972-08-07 1972-08-07 Composite closure cap Expired - Lifetime US3804283A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US00278187A US3804283A (en) 1972-08-07 1972-08-07 Composite closure cap
ZA731158A ZA731158B (en) 1972-08-07 1973-02-19 Composite closure cap
DE2334730A DE2334730C2 (de) 1972-08-07 1973-07-07 Zweiteiliger Verschluß für Behälter, insbesondere Vakuumbehälter
GB3591873A GB1432057A (en) 1972-08-07 1973-07-27 Closures
AU58925/73A AU471220B2 (en) 1972-08-07 1973-08-06 Composite closure cap
IT27621/73A IT993694B (it) 1972-08-07 1973-08-07 Dispositivi di chiusura per contenitori

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00278187A US3804283A (en) 1972-08-07 1972-08-07 Composite closure cap

Publications (1)

Publication Number Publication Date
US3804283A true US3804283A (en) 1974-04-16

Family

ID=23064035

Family Applications (1)

Application Number Title Priority Date Filing Date
US00278187A Expired - Lifetime US3804283A (en) 1972-08-07 1972-08-07 Composite closure cap

Country Status (6)

Country Link
US (1) US3804283A (it)
AU (1) AU471220B2 (it)
DE (1) DE2334730C2 (it)
GB (1) GB1432057A (it)
IT (1) IT993694B (it)
ZA (1) ZA731158B (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504803A1 (de) * 1975-02-05 1976-08-19 Schmalbach Lubeca Vakuum-verschluss fuer behaelter
US5785203A (en) * 1993-11-11 1998-07-28 Industrial Containers Ltd. Tamper-evident container with integrally molded handle
GB2405869A (en) * 2003-09-12 2005-03-16 Calor Teoranta A tamper evident cap for gas cylinders
US20210245940A1 (en) * 2020-02-11 2021-08-12 Oregon Precision Industries, Inc. Dba Paktech Tamper-resistant secure container cover
USD957940S1 (en) 2020-12-16 2022-07-19 Oregon Precision Industries, Inc. Secure container cover
AU2021200685B2 (en) * 2020-02-11 2023-02-16 Oregon Precision Industries, Inc. Dba Paktech Tamper-resistant secure container cover

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ214466A (en) * 1984-12-07 1988-07-28 Rheem Australia Pty Ltd Forming curl top drum: curl rolls more than 360 o
FR2666306B1 (fr) * 1990-09-05 1994-06-24 Cmb Packaging Sa Dispositif de renforcement d'emballage metallique.
CA2082739A1 (en) * 1991-11-12 1993-05-13 Carter Holt Harvey Plastic Products Group Limited Tamper indicating elements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460701A (en) * 1967-06-07 1969-08-12 Continental Can Co Composite closure
US3630405A (en) * 1968-06-08 1971-12-28 Armando Podesta Device for ripping off metal crown caps
US3656648A (en) * 1970-04-24 1972-04-18 Continental Can Co Composite closure
US3690499A (en) * 1971-07-29 1972-09-12 Continental Can Co Composite closure
US3708083A (en) * 1970-11-25 1973-01-02 L Kutik Closure fitment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3596790A (en) * 1969-06-11 1971-08-03 Aluminum Co Of America Closure assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460701A (en) * 1967-06-07 1969-08-12 Continental Can Co Composite closure
US3630405A (en) * 1968-06-08 1971-12-28 Armando Podesta Device for ripping off metal crown caps
US3656648A (en) * 1970-04-24 1972-04-18 Continental Can Co Composite closure
US3708083A (en) * 1970-11-25 1973-01-02 L Kutik Closure fitment
US3690499A (en) * 1971-07-29 1972-09-12 Continental Can Co Composite closure

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504803A1 (de) * 1975-02-05 1976-08-19 Schmalbach Lubeca Vakuum-verschluss fuer behaelter
US5785203A (en) * 1993-11-11 1998-07-28 Industrial Containers Ltd. Tamper-evident container with integrally molded handle
GB2405869A (en) * 2003-09-12 2005-03-16 Calor Teoranta A tamper evident cap for gas cylinders
GB2405869B (en) * 2003-09-12 2005-10-26 Calor Teoranta A tamper evident cap
US20210245940A1 (en) * 2020-02-11 2021-08-12 Oregon Precision Industries, Inc. Dba Paktech Tamper-resistant secure container cover
EP3868681A1 (en) * 2020-02-11 2021-08-25 Oregon Precision Industries Inc. d.b.a. Paktech Secure container cover
AU2021200685B2 (en) * 2020-02-11 2023-02-16 Oregon Precision Industries, Inc. Dba Paktech Tamper-resistant secure container cover
US11772863B2 (en) * 2020-02-11 2023-10-03 Oregon Precision Industries, Inc. Tamper-resistant secure container cover
US20230373696A1 (en) * 2020-02-11 2023-11-23 Oregon Precision Industries, Inc. Dba Paktech Tamper-resistant secure container cover
EP4269274A3 (en) * 2020-02-11 2024-03-06 Oregon Precision Industries Inc. d.b.a. Paktech Secure container cover
US12129087B2 (en) * 2020-02-11 2024-10-29 Oregon Precision Industries Inc. Tamper-resistant secure container cover
USD957940S1 (en) 2020-12-16 2022-07-19 Oregon Precision Industries, Inc. Secure container cover

Also Published As

Publication number Publication date
AU5892573A (en) 1975-02-06
DE2334730C2 (de) 1984-07-19
GB1432057A (en) 1976-04-14
IT993694B (it) 1975-09-30
ZA731158B (en) 1974-10-30
AU471220B2 (en) 1976-04-15
DE2334730A1 (de) 1974-02-21

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