US3780902A - Container end closure - Google Patents

Container end closure Download PDF

Info

Publication number
US3780902A
US3780902A US00244777A US3780902DA US3780902A US 3780902 A US3780902 A US 3780902A US 00244777 A US00244777 A US 00244777A US 3780902D A US3780902D A US 3780902DA US 3780902 A US3780902 A US 3780902A
Authority
US
United States
Prior art keywords
central panel
panel portion
pull ring
opening tab
end closure
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
US00244777A
Other languages
English (en)
Inventor
H Holc
B Pillnik
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.)
Rexam Beverage Can Co
Original Assignee
American Can Co
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 American Can Co filed Critical American Can Co
Application granted granted Critical
Publication of US3780902A publication Critical patent/US3780902A/en
Assigned to AMERICAN NATIONAL CAN COMPANY reassignment AMERICAN NATIONAL CAN COMPANY MERGER (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN CAN PACKAGING INC., NATIONAL CAN CORPORATION (CHANGED TO), TRAFALGAR INDUSTRIES, INC. (MERGED INTO)
Assigned to AMERICAN CAN PACKAGING INC. reassignment AMERICAN CAN PACKAGING INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN CAN COMPANY, A NJ CORP.
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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing tab

Definitions

  • a metallic end closure having a central panel portion, a removable portion defined by a score line included in the central panel portion, and an opening tab attached to the removable portion proximate the periphery of the central panel portion, the pull ring or handle of the opening tab being radially inward from the point of attachment of the opening tab to the removable portion.
  • the end closure is additionally provided with means on said central panel portion for releasably holding said opening tab substantially flat against said central panel portion when the central panel portion bulges outwardly due to the internal pressure of the container.
  • the present invention relates generally to metallic end closures for easy opening containers. More specifically, the present invention relates to an improved metallic end closure for easy opening containers of the type having an opening tab attached to a removable portion of the end closure.
  • the point of attachment of the opening tab on end closures having comparatively small removable portions may also be proximate to the periphery of the end with the pull ring radially inward from the point of attachment.
  • the pull ring or handle is grasped and lifted upwardly causing the nose portion of the tab, which acts as a stress concentrator, to initially break or pop the scored section adjacent to it.
  • a pulling force is then exerted on the pull ring to continue tearing along the score line thereby removing the removable portion from the end.
  • the central panel of the'end closure has a tendency to bulge outwardly due to the internal pressure of the container resulting from the sterilization process.
  • an end closure of the type having a central panel portion, a removable portion defined by a score line included in said central panel portion, and an opening tab attached to said removable portion proximate to the periphery of the central panel portion, the pull ring or handle of the opening tab being radially inward from the point of attachment of the tab to the removable portion, with means for releasably holding the opening tab substantially flat against the central panel portion when the central panel portion bulges outwardly due to the internal pressure of the container.
  • FIG. 1 is a plan view of a container end closure according to the present invention
  • FIG. 2 is an enlarged partial cross-sectional view of the end closure of FIG. 1 taken along line 2-2 of FIG.
  • FIG. 3 is a plan view of the opening tab of the end closure of FIG. 1;
  • FIG. 4 is a plan view of a modified form of the end closure of FIG. 1;
  • FIG. 5 is an enlarged partial cross-sectional view of the end closure of FIG. 4 taken along line 55 of FIG.
  • end closure 10 for an easy opening container of the full-open end type.
  • End closure 10 maybe circular and constructed of steel, aluminum, tin plate, plastic, or other suitable repturable material.
  • end closure 10 is formed'with a generally planar central panel portion, generally designated 12, which merges at its periphery with annular countersink wall 14.
  • the upper end portion of wall 14 merges with outwardly extending curled flange 16 which may be interfolded with the end flange of a container body (not shown) to form an end seam (not shown).
  • central panel 12 includes a removable portion, generally designated 18, which is defined by and included within score line 20.
  • Removable portion 18 becomes detached from end closure 10 when score 20 is completely ruptured.
  • the entire length of score line 20 may be proximate to the periphery of central panel 12 thereby making removable portion 18 substantially coextensive with the central panel.
  • Opening tab 22 is attached to the removable portion proximate the periphery of central panel 12 by a suitable securing means such as hollow rivet 24 which may be integral with and formed in removable portion 18.
  • opening tab 22 includes 'a web portion 26, a handle portion or pull ring 28 attached to web portion 26, and a stress concentrating nose portion 30 formed in web portion 26 and oppositely disposed from pull ring 28.
  • Opening 32 is provided in web portion 26 for the purpose of accepting rivet 24 for the attachment of opening tab 22 to removable portion 18.
  • rivet 24 functions as a fulcrum for opening tab 22 such that when pull ring 28 is'lifted upwardly tab 22 pivots about rivet 24 causing nose portion 30 to contact score line 20 and concentrate the stress at the point of contact thereby breaking the score.
  • Handle portion or pull ring 28 although shown in the drawings as being in the form of a ring may have any suitable shape or configuration desired, such as rectangular, triangular, etc.
  • the handle portion is adapted for ease of grasping by the user, such as by the insertion through the ring of at least one of the users fingers.
  • a flattened portion, generally designated 34 may be provided at that portion of pull ring 28 which is to be initially lifted by the user for the purpose of permitting easier insertion of the users finger.
  • Inwardly angularly flattened portions, generally designated 36 and 38, of pull ring 28 are provided having inwardly extending arcuate projections, respectively designated 40 and 42, as most clearly seen in FIG. 3.
  • central panel 12 is arcuate in shape having the smallest deflection at its periphery and the maximum deflection at its center.
  • protuberances 44 and 46 are provided on central panel 12. P rotuberances 44 and 46 are so positioned that they lie within pull ring 28 adjacent the inner edge 48 of the pull ring and proximate to the flattened portions 36 and 38 thereof. The sides of protuberances 44 and 46 adjacent projections 40 and 42 are substantially flat with the upper portions thereof extending slightly over projections 40 and 42 when pull ring 28 lies flat against central panel 12, as clearly seen in FIG. 2.
  • Protuberances 44 and 46 may be formed in central panel 12 by suitable dimple forming dies simultaneously with the formation of rivet 24 and are preferably hemispherical in shape.
  • the flattened sides of protuberances 44 and 46 are formed by flattening the portions thereof with suitable dies and due to the spring back of the stretched upper portions of the protuberances these upper portions extend outwardly over the flattened sides when the die is removed.
  • FIGS. 4 and 5 A slightly modified form of the present invention is seen in FIGS. 4 and 5 where the reference numerals indicating parts similar to the parts designated in FIGS. 1-3 are preceded by the numeral 1.
  • the difference between the embodiments lies in the shape of the respective protuberances.
  • protuberances 144 and 146 are formed similarly to protuberances 44 and 46 with the added feature that they are angularly flattened at 150 and 152 thereby resulting in a greater overlapping of pull ring 128.
  • An improved end closure for a container subjected to internal pressure of the type having a central panel portion, a removable portion defined by a score line included in said central panel portion, and an opening tab including a pull ring attached to said removable portion for removal thereof by the user, the point of attachment of said opening tab to said removable portion being proximate the periphery of said central panel portion with the pull ring of said opening tab radially inward from the point of attachment, wherein the improvement comprises means on said central panel portion releasably engaging the pull ring of said opening tab to thereby hold said opening tab substantially flat against said central panel portion when said central panel portion bulges outwardly due to the internal pressure of the container.
  • the means for releasably engaging the pull ring of said opening tab comprises at least one protuberance on said central panel portion adjacent the pull ring of said opening tab, said protuberance having an upper portion which partially overlapps said pull ring when said pull ring is pressed onto said central panel portion thereby releasably holding said opening tab substantially flat against said central panel portion when said central panel portion bulges outwardly due to the internal pressure of the container.
  • the means for releasably engaging the pull ring of said opening tab comprises a first protuberance on said central panel portion adjacent the pull ring of said opening tab and a second protuberance on said central panel portion adjacent the pull ring of said opening tab, said first and second protuberances having upper portions which partially overlap said pull ring when said pull ring is pressed onto said central panel portion thereby releasably holding said opening tab substantially flat against said central panel portion when said central panel portion bulges outwardly due to the internal pressure of the container.
  • first and second protuberances are raised dimples on said central panel portion which protrude above the plane defined by said central panel portion.
  • said raised dimples are hemispherical in shape having the sides adjacent said p ull ring substantially flat.
  • An end closure for a container subjected to internal pressure which comprises a central panel portion, a removable portion defined by a score line included in said central panel portion, an opening tab attached to said removable portion, the point of attachment of said opening tab to said removable portion being proximate to the periphery of said central panel portion, the pull ring of said opening tab being radially inward from the point of attachment of said opening tab to said removable portion, a first hemispherically shaped dimple on said central panel portion within the pull ring of said opening tab, and a second hemispherically shaped dimple on said central panel portion within the pull ring of said opening tab, the sides of said first and second dimples adjacent the inner edge of the pull ring being substantially flat and having upper portions extending slightly over said pull ring when said pull ring is pressed onto said central panel portion to thereby releasably engage the pull ring of said opening tab and releasably hold said opening tab substantially flat against said central panel portion when said central panel portion bulges outward

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
US00244777A 1972-04-17 1972-04-17 Container end closure Expired - Lifetime US3780902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24477772A 1972-04-17 1972-04-17

Publications (1)

Publication Number Publication Date
US3780902A true US3780902A (en) 1973-12-25

Family

ID=22924070

Family Applications (1)

Application Number Title Priority Date Filing Date
US00244777A Expired - Lifetime US3780902A (en) 1972-04-17 1972-04-17 Container end closure

Country Status (5)

Country Link
US (1) US3780902A (de)
JP (1) JPS5422530Y2 (de)
BR (2) BR7302576D0 (de)
CA (1) CA994260A (de)
FR (1) FR2180861B1 (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868918A (en) * 1971-12-27 1975-03-04 Aluminum Co Of America Lock-down for a pull tab on a container wall
US3929252A (en) * 1974-08-22 1975-12-30 American Can Co Child-resistant closure for metal container
US3941276A (en) * 1974-11-20 1976-03-02 Continental Can Company, Inc. Pull tab anti-rotation mounting
US3964632A (en) * 1974-09-16 1976-06-22 Continental Can Company, Inc. Closure with a slotted pull tab
US3967754A (en) * 1975-05-12 1976-07-06 Continental Can Company, Inc. Pull tab anti-rotation mounting
US3986633A (en) * 1976-01-22 1976-10-19 Aluminum Company Of America Tab for easy-opening container wall
US4014455A (en) * 1976-06-21 1977-03-29 American Can Company Accurate flow control container means
US5186348A (en) * 1991-04-24 1993-02-16 Can Do Associates Can end with lock open and lock closed tab operated by a pull ring
US5713481A (en) * 1996-05-06 1998-02-03 Aluminum Company Of America Full panel pull out can end with vent means
US20040066989A1 (en) * 2002-10-02 2004-04-08 Schneider John H. Reclosable package having slider with pull tab
US20040140309A1 (en) * 2003-01-22 2004-07-22 Michel Thibaut End closure with anti-rotation tab
US20040195240A1 (en) * 2002-01-29 2004-10-07 Brandon Darrell Holmes Raised beverage can top with holding clip and spacer
US20050252917A1 (en) * 2004-05-14 2005-11-17 Timothy Turner Can end with tab for improved accessibility
US20060010956A1 (en) * 2003-11-03 2006-01-19 Hajo Rieck Method for fixing the position of a tab having an anti-rotation bead formed from the panel of a sheet metal lid (steep anti rotation device)
US20060016815A1 (en) * 2003-11-03 2006-01-26 Hajo Rieck Anti rotation bead
US20060277966A1 (en) * 2003-01-13 2006-12-14 Hilary Clark Method for fixing the position of a pull-tab with a steep anti rotation device formed from the panel of a sheet metal cover
US20070062950A1 (en) * 2003-01-13 2007-03-22 Ball Packaging Europe Gmbh Fixing the position of a pull-tab with an anti rotation bead formed from the panel
US20140231432A1 (en) * 2011-08-10 2014-08-21 Red Bull Gmbh Container Lid and Container, and Method for Producing a Container Lid
US20190112096A1 (en) * 2017-10-12 2019-04-18 Ardagh Metal Beverage USA Inc. Tabs and related methods

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593875A (en) * 1969-01-09 1971-07-20 Ermal C Fraze Tab for tear strip of container wall

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593875A (en) * 1969-01-09 1971-07-20 Ermal C Fraze Tab for tear strip of container wall

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868918A (en) * 1971-12-27 1975-03-04 Aluminum Co Of America Lock-down for a pull tab on a container wall
US3929252A (en) * 1974-08-22 1975-12-30 American Can Co Child-resistant closure for metal container
US3964632A (en) * 1974-09-16 1976-06-22 Continental Can Company, Inc. Closure with a slotted pull tab
US3941276A (en) * 1974-11-20 1976-03-02 Continental Can Company, Inc. Pull tab anti-rotation mounting
US3967754A (en) * 1975-05-12 1976-07-06 Continental Can Company, Inc. Pull tab anti-rotation mounting
US3986633A (en) * 1976-01-22 1976-10-19 Aluminum Company Of America Tab for easy-opening container wall
US4014455A (en) * 1976-06-21 1977-03-29 American Can Company Accurate flow control container means
US5186348A (en) * 1991-04-24 1993-02-16 Can Do Associates Can end with lock open and lock closed tab operated by a pull ring
US5713481A (en) * 1996-05-06 1998-02-03 Aluminum Company Of America Full panel pull out can end with vent means
US20040195240A1 (en) * 2002-01-29 2004-10-07 Brandon Darrell Holmes Raised beverage can top with holding clip and spacer
US20040066989A1 (en) * 2002-10-02 2004-04-08 Schneider John H. Reclosable package having slider with pull tab
US7510328B2 (en) * 2002-10-02 2009-03-31 Illinois Tool Works Inc. Reclosable package having slider with pull tab
US7926675B2 (en) 2003-01-13 2011-04-19 Ball Packaging Europe Gmbh Fixing the position of a pull-tab with an anti rotation bead formed from the panel
US20070062950A1 (en) * 2003-01-13 2007-03-22 Ball Packaging Europe Gmbh Fixing the position of a pull-tab with an anti rotation bead formed from the panel
US20060277966A1 (en) * 2003-01-13 2006-12-14 Hilary Clark Method for fixing the position of a pull-tab with a steep anti rotation device formed from the panel of a sheet metal cover
US7384227B2 (en) 2003-01-13 2008-06-10 Ball Packaging Europe Gmbh Method for fixing the position of a pull-tab with a steep anti rotation device formed from the panel of a sheet metal cover
US20040140309A1 (en) * 2003-01-22 2004-07-22 Michel Thibaut End closure with anti-rotation tab
US6951293B2 (en) 2003-01-22 2005-10-04 Rexam Beverage Can Company End closure with anti-rotation tab
US20060010956A1 (en) * 2003-11-03 2006-01-19 Hajo Rieck Method for fixing the position of a tab having an anti-rotation bead formed from the panel of a sheet metal lid (steep anti rotation device)
US7165926B2 (en) 2003-11-03 2007-01-23 Hajo Rieck Method for fixing the position of a tab having an anti-rotation bead formed from the panel of a sheet metal lid (steep anti rotation device).
US20060016815A1 (en) * 2003-11-03 2006-01-26 Hajo Rieck Anti rotation bead
US7909196B2 (en) 2004-05-14 2011-03-22 Rexam Beverage Can Company Can end with tab for improved accessibility
US20050252917A1 (en) * 2004-05-14 2005-11-17 Timothy Turner Can end with tab for improved accessibility
US20140231432A1 (en) * 2011-08-10 2014-08-21 Red Bull Gmbh Container Lid and Container, and Method for Producing a Container Lid
US9776774B2 (en) * 2011-08-10 2017-10-03 Red Bull Gmbh Container lid and container, and method for producing a container lid
US20190112096A1 (en) * 2017-10-12 2019-04-18 Ardagh Metal Beverage USA Inc. Tabs and related methods
US10577148B2 (en) * 2017-10-12 2020-03-03 Ardagh Metal Beverage USA Inc. Tabs and related methods
USD893298S1 (en) 2017-10-12 2020-08-18 Ardagh Metal Beverage USA Inc. Tab
USD894000S1 (en) 2017-10-12 2020-08-25 Ardagh Metal Beverage USA Inc. Tab

Also Published As

Publication number Publication date
BR7302576D0 (pt) 1974-12-31
CA994260A (en) 1976-08-03
FR2180861A1 (de) 1973-11-30
JPS5422530Y2 (de) 1979-08-06
JPS4930371U (de) 1974-03-15
FR2180861B1 (de) 1976-05-21
BR7302777D0 (pt) 1974-07-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AMERICAN NATIONAL CAN COMPANY, STATELESS

Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354

Effective date: 19870430

Owner name: AMERICAN NATIONAL CAN COMPANY

Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354

Effective date: 19870430

Owner name: AMERICAN CAN PACKAGING INC., CONNECTICUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338

Effective date: 19861107

Owner name: AMERICAN CAN PACKAGING INC., AMERICAN LANE, GREENW

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338

Effective date: 19861107