US3618815A - Easy-opening device for a container end - Google Patents

Easy-opening device for a container end Download PDF

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Publication number
US3618815A
US3618815A US34131A US3618815DA US3618815A US 3618815 A US3618815 A US 3618815A US 34131 A US34131 A US 34131A US 3618815D A US3618815D A US 3618815DA US 3618815 A US3618815 A US 3618815A
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US
United States
Prior art keywords
tab
opening
easy
flap
container
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
US34131A
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English (en)
Inventor
Robert E Heffner
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.)
Alcoa Corp
Original Assignee
Aluminum Company of America
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 Aluminum Company of America filed Critical Aluminum Company of America
Application granted granted Critical
Publication of US3618815A publication Critical patent/US3618815A/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
    • 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
    • B65D17/4012—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 partially by means of a tearing tab
    • 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

  • This disclosure relates to an easy-opening container end in which the opening device remains attached to the end after opening, and which includes a V-shaped opening flap in the container end which is forced or plunged into the container by means of a lever tab which has a line of weakness in its upper surface between its handle end and its nose end so that upon opening, the handle end of the tab may be depressed to a nonobstructing position on the container end without closing the pouring orifice in the end.
  • Integral easy-opening devices for beverage cans are quite popular because they eliminate the necessity of a separate opener or tool to form a pouring orifice in the can end.
  • I-IOwever the heretofore known easy-opening beverage cans which have separable pull tabs and tear strips can cause a litter problem through careless disposal of the pull tabs and tear strips. While stray cans are easily seen and collected, the relatively small pull tabs and tear strips are not easily seen or readily picked up.
  • Various nonremovable easy-opening devices have been tried as shown in Brown U.S. Pat. No. 3,446,389,Brown U.S. Pat. No.
  • This invention provides a container end which has V-shaped score therein defining an opening flap with its apex adjacent the periphery of the end, and a tab which has a nose end overlying and affixed to the opening flap and a handle end toward the center of the container end.
  • the tab has a transverse line of weakness in its upper surface between its handle end and its nose end so that the tab can be bent or folded away from the line of weakness.
  • the end may also have a second score which defines a vent portion to which the handle end of the tab may be attached. To open the can, the handle end of the tab is lifted to sever the vent portion from the end and rupture the V" score which defines the opening flap.
  • an object of the invention is to provide an easy-opening device which remains attached to the can end after end after opening.
  • Another object of the invention is to provide a nonremovable easy-opening device which forms both a pouring orifice and a vent opening in a can end.
  • FIG. 1 is a top plan view of a container end of the invention showing the scores and rivets before attachment of a tab to the end,
  • FIG. 2 is a bottom plan view of a tab for attachment to the container end of FIG. 1,
  • FIG. 3 is a fragmentary cross-sectional view of the edge of the tab of FIG. 2 taken along line III-III,
  • FIG. 4 is a top plan view of the container end of FIG. I after attachment of a pull tab of FIG. 2 to the end,
  • FIG. 5 is a cross-sectional view of the container end of FIG. 4 taken along line V-V,
  • FIG. 6 is a cross-sectional view similar to FIG. 5 in which opening has been initiated
  • FIG. 7 is a cross-sectional view similar to FIGS. 5 and 6 in which opening has been substantially efi'ected
  • FIG. 8 is a cross-sectional view similar to FIGS. 5, 6, and 7 with opening completed and the tab depressed to a nonobstructing position on the container end.
  • a sheet metal end 10 for a can or other container is illustrated before a tab is attached to the end.
  • the end is made of aluminum or an alloy thereof and comprises an end wall 12 with a peripheral seam I4 therearound which may be joined to a container body by conventional methods.
  • a peripheral groove 16 may also be provided adjacent the seam 14 to strengthen the end against reversal or outward doming.
  • a V-shaped score line 18 is formed in the end wall 12 to define a flap 20 which can be depressed into a can to which the end is attached.
  • a second score line 24 may also be formed in the end wall 12 to define a removable tear portion 26 which is adapted to provide a vent opening in the container.
  • This second score 24 may be given a variety'of configurations such as a triangle, circle or the like, with the one selected for illustration being designed for ease of opening and adequate size for rapid venting.
  • End 10 further includes two integral upstanding hollow rivets 28 and 30, one in the opening flap 20 and one in the end of the vent portion 26 distal the opening flap for attachment of a tab to the vent portion and flap.
  • embossments or other reinforcing means may be provided in the opening flap on opposite sides of rivet 28 to reinforce the flap adjacent its base.
  • Such embossments may have various shapes, with the ones illustrated being in the form of small downwardly embossed ribs 32 which are parallel to a line through rivets 28 and 30 and to the axis of the tab which is secured to the rivets.
  • the embossed ribs 32 are designed to limit bending in the flap 20 during opening so that the flap will hinge or bend only along the line of its base through the ends of score 18. If flap 20 were permitted to bend closer to the rivet 28, the size of the pouring orifice would be reduced in size and might be smaller than desired.
  • Tab 34 is illustrated for attachment to can end 10.
  • Tab 34 may be formed from sheet metal, preferably aluminum or an alloy thereof, and has a triangular-shaped nose end 36 and a handle end 38 with a large aperture in it to facilitate gripping by the user.
  • the tab 34 further has a downwardly recessed central area 46 with two small holes 39 in it for receiving rivets for attachment of the tab to a can end.
  • the sheet metal of the tab may be curled under around the large aperture and along the outer edge of the tab to form beads 40 and 42 respectively.
  • the nose end 36 is also reinforced by means of a downwardly directed flange 43 which may have a sharp point 45 on the end of the tab nose to facilitate rupture of the score 18 at the apex 22 of the flap 20 in the can end 10 (FIG. 1).
  • Reentrant flanges 44 are provided on the bottom of the tab 34 intermediate the head 42 and flange 43 along both sides of the tab. These reentrant flanges 44 provide a hinge element for depressing the handle end of the tab to a nonobstructing position on a can end. Preferably, the reentrant flanges 44 are parallel to the plane of the tab and, upon attachment of the tab to a container end, will be parallel to such a container end wall. With reentrant flanges 44 parallel to a container end wall, the hinge elements are more readily bendable, and
  • the reentrant flanges may be slightly wider than the bottom edge of the curled bead 42 in order to provide suitably strong hinge elements.
  • the tab further has a transverse line of weakness in its upper surface between its handle end 38 and its nose end 36.
  • the line of weakness may be formed by a cut 48 through the upper walls of the tab on both sides of the recessed central panel 46, and by a score line 50 in the upper surface of the central area.
  • the reentrant flanges 44 (FIG. 2) on the underside of the tab are preferably not weakened.
  • FIGS. 6 through 8 the manipulation of the tab 34 to open can end 10 is progressively illustrated. It is seen in FIG. 6 that initial lifting of the handle end 38 of the tab exerts an upward force on the rivet 30 to rupture the score line 24 around the vent portion 26 to sever the vent portion from the end and form a vent for air to enter the can and for gases to escape from the can. Since the vent is located under the tab, the vent opening is shielded by the tab and accidental spraying of the contents of the can on the user during opening is prevented.
  • the tab 34 is substantially rigid, and the flange 42 around the nose 36 of the tab exerts a downward force on the flap 20 adjacent score 18.
  • the transverse line of weakness is in the upper surface and walls of the tab, this line does not materially affect the rigidity of the tab during lifting.
  • the material in such upper surfaces and walls are in compression during lifting and not affected by such weakening.
  • the tab 34 may bow or bend slightly as shown in the FIGS. 5 and 6. Continued lifting of the handle 38 of the tab 34 effects rupture of the score 18 around flap 20 and hinges the nose end of the tab and the opening flap into the can as illustrated in FIG. 7. A pouring orifice and a vent orifice are thereby provided in the end wall.
  • the handle end 38 of the tab After the pouring orifice and vent orifice have been provided, it is next desired to move the handle end 38 of the tab to a position in which it will not interfere with pouring or drinking from the can. This is done by simply pushing the handle end 38 downward against the end wall 12 as shown in FIG. 8.
  • the end is preferably designed so that the flap 20 is stronger or more unyielding against bending than is the tab. Consequently, the tab 34 bends or folds along the line of weakness between its handle end and its nose end, and flap 20 remains depressed in the end rather than hinge upward to again fill the pouring orifice in the end.
  • Locking means may also be provided to lock the opening flap in its opened position when the handle end of the tab is depressed against the end wall 12, but such locking means is not generally required.
  • the tab could be made in a variety of configurations such as with a raised terminal end on its handle to facilitate gripping during opening.
  • the line of weakness in the central portion of the tab could also be formed by cutting or lancing through the material along such line.
  • Means could also be provided to lock the nose end of the tab in the container after opening, and the vent opening and opening flap could be given various other shapes.
  • an integral easy-opening device is provided on a can end, whereby after opening is effected by lifting the tab, the tab remains in a nonobstructing position on the can end and is not strewn on the ground to cause a litter problem.
  • an easy-opening device comprising:
  • a tab including a nose end overlying the opening flap and affixed thereto and a handle end toward the center of the container wall, said tab having a transverse line of weakness in its upper surface between said handle end and said nose end whereby, upon lifting of the handle end of the tab to rupture the score and plunge the nose end of the tab and the flap into a container to which the end is secured, the handle end of the tab can be depressed to a nonobstructing position on the end without closing the pouring orifice which has been formed.
  • An easy-opening device as set forth in claim I in which said tab is made of sheet metal and has a reinforcing configuration along both sides thereof extending from said handle end into said nose end, said reinforcing configurations having a cut line in their upper walls to form said line of weakness.
  • An easy-opening device as set forth in claim 1 which includes a tear strip in the container wall adjacent the handle end of the tab and secured thereto to provide a vent opening in the end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Closures For Containers (AREA)
US34131A 1970-05-04 1970-05-04 Easy-opening device for a container end Expired - Lifetime US3618815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3413170A 1970-05-04 1970-05-04

Publications (1)

Publication Number Publication Date
US3618815A true US3618815A (en) 1971-11-09

Family

ID=21874503

Family Applications (1)

Application Number Title Priority Date Filing Date
US34131A Expired - Lifetime US3618815A (en) 1970-05-04 1970-05-04 Easy-opening device for a container end

Country Status (11)

Country Link
US (1) US3618815A (enrdf_load_stackoverflow)
JP (1) JPS5316357B1 (enrdf_load_stackoverflow)
AT (1) AT307970B (enrdf_load_stackoverflow)
BE (1) BE766253A (enrdf_load_stackoverflow)
BR (1) BR7102506D0 (enrdf_load_stackoverflow)
CA (1) CA945917A (enrdf_load_stackoverflow)
CH (1) CH537310A (enrdf_load_stackoverflow)
FR (1) FR2088296B1 (enrdf_load_stackoverflow)
GB (1) GB1305669A (enrdf_load_stackoverflow)
NL (1) NL144217B (enrdf_load_stackoverflow)
ZA (1) ZA712306B (enrdf_load_stackoverflow)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731836A (en) * 1972-03-17 1973-05-08 Fraze Ermal C Container wall with connector for retaining the tab and tear portion on the container wall
US3738526A (en) * 1972-01-27 1973-06-12 Nat Can Corp Container with permanently attached tear strip and tab
US3749275A (en) * 1971-12-27 1973-07-31 Aluminum Co Of America Lock-down for a pull tab on a container wall
US3796344A (en) * 1972-05-18 1974-03-12 Continental Can Co Non-detachable tear strip and pull tab structure for easy opening container
US3856184A (en) * 1972-08-30 1974-12-24 Crown Cork & Seal Co Easy-opening container closure having a sliding tab
US3868918A (en) * 1971-12-27 1975-03-04 Aluminum Co Of America Lock-down for a pull tab on a container wall
US3880319A (en) * 1972-01-10 1975-04-29 Smw Atlanta Inc Container with reclosure apparatus
US4043479A (en) * 1976-05-10 1977-08-23 The Continental Group, Inc. Front opening easy-opening end closure with vent
FR2408530A1 (fr) * 1977-11-10 1979-06-08 Continental Group Perfectionnements apportes aux recipients a ouverture rapide
WO1984003850A1 (en) * 1983-03-28 1984-10-11 William T Saunders Easy-open container wall
US4915246A (en) * 1987-11-04 1990-04-10 501 Nippon Steel Corporation Non-vent type fully openable easy-opening end
WO2000069735A1 (en) * 1999-05-17 2000-11-23 Charles Chang Beverage can lid with easy opening feature
US20020088804A1 (en) * 2001-01-05 2002-07-11 Yoshiharu Omura Can cover with a stay-on tab
FR2876994A1 (fr) * 2004-10-22 2006-04-28 Joseph Aquilina Dispositif d'ouverture de boite de soda et de tous conteneurs de boisson.
US20090206083A1 (en) * 2006-06-17 2009-08-20 Horst Heigl Container closing device
USD715144S1 (en) 2012-11-13 2014-10-14 Ball Corporation Vented container end closure
USD715647S1 (en) 2012-11-28 2014-10-21 Ball Corporation Vented end closure
CN104144858A (zh) * 2012-01-03 2014-11-12 安海斯-布希英博股份有限公司 包括最大分配孔和通气孔的罐
US20150001220A1 (en) * 2012-01-03 2015-01-01 Anheuser-Busch Inbev S.A. Can Comprising a First, Dispense Opening and Second, Vent Opening and a Single Pull Tab
USD727725S1 (en) 2011-10-27 2015-04-28 Ball Corporation Vented container end closure
US9233784B2 (en) 2011-11-04 2016-01-12 Ball Corporation Vented metallic container end closure
US9446879B2 (en) 2010-08-06 2016-09-20 Ball Corporation Container end closure with optional secondary vent opening
US9694935B2 (en) 2013-03-15 2017-07-04 Ball Corporation End closure with a ring pull actuated secondary vent
US9714115B2 (en) 2014-07-30 2017-07-25 Ball Corporation Vented container end closure
WO2018098550A1 (en) * 2016-12-01 2018-06-07 Fernandes Joao Marques Constructive arrangement for the opening of a beverage can
US10017295B2 (en) 2010-08-06 2018-07-10 Ball Corporation Container end closure with optional secondary vent opening
CN112469632A (zh) * 2018-07-20 2021-03-09 大和制罐株式会社 罐盖
US11434046B2 (en) 2016-11-25 2022-09-06 João Marques Fernandes Constructive arrangement for the opening of a beverage can

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289880A (en) * 1964-09-30 1966-12-06 Wilkich John Container with integral opener
US3499573A (en) * 1968-07-29 1970-03-10 Mjb Co Flexible tab for easy opening can
US3477608A (en) * 1968-11-21 1969-11-11 Ermal C Fraze Easy-opening can end having vent means

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749275A (en) * 1971-12-27 1973-07-31 Aluminum Co Of America Lock-down for a pull tab on a container wall
US3868918A (en) * 1971-12-27 1975-03-04 Aluminum Co Of America Lock-down for a pull tab on a container wall
US3880319A (en) * 1972-01-10 1975-04-29 Smw Atlanta Inc Container with reclosure apparatus
US3738526A (en) * 1972-01-27 1973-06-12 Nat Can Corp Container with permanently attached tear strip and tab
US3731836A (en) * 1972-03-17 1973-05-08 Fraze Ermal C Container wall with connector for retaining the tab and tear portion on the container wall
US3796344A (en) * 1972-05-18 1974-03-12 Continental Can Co Non-detachable tear strip and pull tab structure for easy opening container
US3856184A (en) * 1972-08-30 1974-12-24 Crown Cork & Seal Co Easy-opening container closure having a sliding tab
US4043479A (en) * 1976-05-10 1977-08-23 The Continental Group, Inc. Front opening easy-opening end closure with vent
FR2408530A1 (fr) * 1977-11-10 1979-06-08 Continental Group Perfectionnements apportes aux recipients a ouverture rapide
WO1984003850A1 (en) * 1983-03-28 1984-10-11 William T Saunders Easy-open container wall
AU574676B2 (en) * 1983-03-28 1988-07-14 Elpatronic A.G. Easy-open container wall
US4915246A (en) * 1987-11-04 1990-04-10 501 Nippon Steel Corporation Non-vent type fully openable easy-opening end
WO2000069735A1 (en) * 1999-05-17 2000-11-23 Charles Chang Beverage can lid with easy opening feature
US20020088804A1 (en) * 2001-01-05 2002-07-11 Yoshiharu Omura Can cover with a stay-on tab
FR2876994A1 (fr) * 2004-10-22 2006-04-28 Joseph Aquilina Dispositif d'ouverture de boite de soda et de tous conteneurs de boisson.
US20090206083A1 (en) * 2006-06-17 2009-08-20 Horst Heigl Container closing device
US8556104B2 (en) * 2006-06-17 2013-10-15 Horst Heigl Container closing device
US10017295B2 (en) 2010-08-06 2018-07-10 Ball Corporation Container end closure with optional secondary vent opening
US9446879B2 (en) 2010-08-06 2016-09-20 Ball Corporation Container end closure with optional secondary vent opening
USD727725S1 (en) 2011-10-27 2015-04-28 Ball Corporation Vented container end closure
USD762114S1 (en) 2011-10-27 2016-07-26 Ball Corporation Vented container end closure
US9233784B2 (en) 2011-11-04 2016-01-12 Ball Corporation Vented metallic container end closure
US20140367382A1 (en) * 2012-01-03 2014-12-18 Anheuser-Busch Inbev S.A. Can Comprising a Maxi-Dispense Opening and a Vent Opening
US9181006B2 (en) * 2012-01-03 2015-11-10 Anheuser-Busch Inbev S.A. Can comprising a maxi-dispense opening and a vent opening
CN104144858A (zh) * 2012-01-03 2014-11-12 安海斯-布希英博股份有限公司 包括最大分配孔和通气孔的罐
US9944441B2 (en) * 2012-01-03 2018-04-17 Anheuser-Busch Inbev S.A. Can comprising a first, dispense opening and second, vent opening and a single pull tab
US20150001220A1 (en) * 2012-01-03 2015-01-01 Anheuser-Busch Inbev S.A. Can Comprising a First, Dispense Opening and Second, Vent Opening and a Single Pull Tab
US11597569B2 (en) 2012-01-03 2023-03-07 Anheuser-Busch Inbev S.A. Can comprising a first, dispense opening and second, vent opening and a single pull tab
AU2012364345B2 (en) * 2012-01-03 2016-11-10 Anheuser-Busch Inbev S.A. Can comprising a maxi-dispense opening and a vent opening
US10618708B2 (en) 2012-01-03 2020-04-14 Anheuser-Busch Inbev S.A. Can comprising a first, dispense opening and second, vent opening and a single pull tab
CN104144858B (zh) * 2012-01-03 2017-09-01 安海斯-布希英博股份有限公司 包括最大分配孔和通气孔的罐
EP2800705B1 (en) * 2012-01-03 2017-09-20 Anheuser-Busch InBev S.A. Can comprising a maxi-dispense opening and a vent opening
USD749415S1 (en) 2012-11-13 2016-02-16 Ball Corporation Container end closure
USD715144S1 (en) 2012-11-13 2014-10-14 Ball Corporation Vented container end closure
USD750488S1 (en) 2012-11-28 2016-03-01 Ball Corporation End closure
USD715647S1 (en) 2012-11-28 2014-10-21 Ball Corporation Vented end closure
US10556718B2 (en) 2013-03-15 2020-02-11 Ball Corporation End closure with a ring pull actuated secondary vent
US9694935B2 (en) 2013-03-15 2017-07-04 Ball Corporation End closure with a ring pull actuated secondary vent
US9714115B2 (en) 2014-07-30 2017-07-25 Ball Corporation Vented container end closure
US10358257B2 (en) 2014-07-30 2019-07-23 Ball Corporation Vented container end closure
US10981694B2 (en) 2014-07-30 2021-04-20 Ball Corporation Vented container end closure
US11434046B2 (en) 2016-11-25 2022-09-06 João Marques Fernandes Constructive arrangement for the opening of a beverage can
WO2018098550A1 (en) * 2016-12-01 2018-06-07 Fernandes Joao Marques Constructive arrangement for the opening of a beverage can
US10968009B2 (en) 2016-12-01 2021-04-06 João Marques Fernandes Constructive arrangement for the opening of a beverage can
CN112469632A (zh) * 2018-07-20 2021-03-09 大和制罐株式会社 罐盖
CN112469632B (zh) * 2018-07-20 2022-06-21 大和制罐株式会社 罐盖

Also Published As

Publication number Publication date
AT307970B (de) 1973-06-12
BE766253A (fr) 1971-10-26
DE2119380A1 (de) 1971-11-18
CH537310A (fr) 1973-05-31
NL144217B (nl) 1974-12-16
GB1305669A (enrdf_load_stackoverflow) 1973-02-07
CA945917A (en) 1974-04-23
NL7105190A (enrdf_load_stackoverflow) 1971-11-08
BR7102506D0 (pt) 1973-05-03
DE2119380B2 (de) 1973-01-18
FR2088296A1 (enrdf_load_stackoverflow) 1972-01-07
ZA712306B (en) 1972-01-26
FR2088296B1 (enrdf_load_stackoverflow) 1974-10-11
JPS5316357B1 (enrdf_load_stackoverflow) 1978-05-31

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