US3795341A - Easy opening container - Google Patents

Easy opening container Download PDF

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Publication number
US3795341A
US3795341A US00271473A US3795341DA US3795341A US 3795341 A US3795341 A US 3795341A US 00271473 A US00271473 A US 00271473A US 3795341D A US3795341D A US 3795341DA US 3795341 A US3795341 A US 3795341A
Authority
US
United States
Prior art keywords
score line
panel
lever section
primary
legs
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
US00271473A
Other languages
English (en)
Inventor
O Ostrem
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
Application granted granted Critical
Publication of US3795341A publication Critical patent/US3795341A/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

Definitions

  • the present invention relates to easy opening containers and more particularly to easy opening containers of the type wherein the tear portion after separation from the container to provide a pour opening remain attached to the container.
  • the easy opening structure of th present invention comprises generally an end closure having a panel bounded by a peripheral chuck wall.
  • the panel is provided with a radially extending U-shaped tear portion defined by a score line having a looped end adjacent to the chuck wall and a pair of spaced legs terminating in ends.
  • a secondary or auxillary score line of generally U-shaped configuration defining a lever section is provided in the removable panel portion.
  • the secondary score line is disposed with the terminal ends facing the looped end of the primary score line.
  • the looped end of the U-shaped secondary score line is located closely adjacent to the line passing through the terminal ends of the primary score line.
  • a pull tab is attached adjacent to the lever section within the loop so that upon upwardly pulling, the lever section separates.
  • a bead is formed in the tear portion and extends between the terminal ends of the auxiliary score line and terminates adjacent the looped end of th primary score line.
  • the bead rigidities the lever section so that the primary score line is severed at its looped end.
  • the primary score line is severed along its length and the tear portion is separated and bent rearwardly along a line extending between the terminal ends of the score. In this manner, a pour opening is formed in the end panel so that the container contents may be emptied therethrough.
  • FIG. 1 is a top plan view of a container having an end closure embodying the easy opening structure of the present invention.
  • FIG. 2 is a fragmentary cross-sectional view taken generally along the lines 22 of FIG. 1.
  • FIG. 3 is an enlarged cross-sectional view taken generally along the lines 2-2 of FIG. ll.
  • FIG. 4 is a cross-sectional view taken generally along the lines 4-4 of FIG. 1 and showing the stiffening bead formed in the lever section of the tear strip.
  • FIG. 5 is a cross-sectional view taken generally along the lines 55 of FIG. l and showing the bead structure adjacent the looped end of the primary score line.
  • FIG. 6 is a fragmentary top plan view of the end panel with the pull tab omitted to show in particular the primary and secondary score lines defining the tear potion and lever section, respectively.
  • FIG. 7 is a fragmentary cross-sectional view through the lever section with the latter shown in the position prior to initial severance of the primary score line.
  • FIG. 8 is an fragmentary cross-sectional view through the lever section as the primary score line is initially severed.
  • FIG. 9 is a fragmentary cross-sectional view similar to FIG. 8 but showing the relationship of the components when the length of the score line is partially severed.
  • the easy opening container 10 of the present invention is embodied in a container of generally circular cross-section and includes a body 11 and an end closure 12.
  • the end closure 12 is made from aluminum, tin plate, or other rupturable material and is formed with a central panel 12.
  • An annular upwardly inclined wall or upstanding chuck wall 14 extends upwardly from the periphery of the central panel 13 and at its upper end merges into a flange which is double seamed to the container body 11 in the usual way.
  • a radially extending bead 26 which terminates at one end adjacent to the bight 17 of the primary score line 1.5 and at the other end intermediate the length of the legs 22-22.
  • the bead 26 renders the lever section 24 more rigid.
  • a pull tab 27 is fixed to the lever section 24 by means of a rivet 29 formed integral with the panel.
  • the pull tab 27 is of a standard construction and includes an attachment flap 28 and a pair of fulcrum legs 30-30.
  • the fulcrum legs 30-30 straddle the bight 21 of the secondary score line 20.
  • a finger grip portion 31 is grasped to tilt the pull tab 27 about the fulcrum legs 30-30 which engage the panel so that an upward force is applied on the rivet 29 to initiate severance of the looped end 21 of the lever section 24 as shown in FIG. 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
US00271473A 1972-07-13 1972-07-13 Easy opening container Expired - Lifetime US3795341A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27147372A 1972-07-13 1972-07-13

Publications (1)

Publication Number Publication Date
US3795341A true US3795341A (en) 1974-03-05

Family

ID=23035727

Family Applications (1)

Application Number Title Priority Date Filing Date
US00271473A Expired - Lifetime US3795341A (en) 1972-07-13 1972-07-13 Easy opening container

Country Status (4)

Country Link
US (1) US3795341A (cg-RX-API-DMAC10.html)
JP (1) JPS5422531Y2 (cg-RX-API-DMAC10.html)
CA (1) CA976491A (cg-RX-API-DMAC10.html)
ZA (1) ZA728183B (cg-RX-API-DMAC10.html)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851787A (en) * 1972-09-25 1974-12-03 Alusuisse Aluminum alloy can end and body
US3894653A (en) * 1974-06-14 1975-07-15 Continental Can Co Child resistant easy opening end unit
DE2842449A1 (de) * 1977-11-21 1979-05-23 Continental Group Einteilige griffflasche aus metall zum hebelartigen oeffnen von leicht zu oeffnenden behaelterdeckeln
US4397403A (en) * 1981-09-18 1983-08-09 Guimarin Container Co., Incorporated Container opening apparatus with captured tab
EP0223776A4 (en) * 1985-05-20 1988-08-29 Weirton Steel Corp Panel structure and manufacturing process.
US5145086A (en) * 1991-05-17 1992-09-08 Krause Arthur A Captive tear tab with protective means for container opening
US20050252917A1 (en) * 2004-05-14 2005-11-17 Timothy Turner Can end with tab for improved accessibility
US20080142521A1 (en) * 2006-12-14 2008-06-19 Ali El-Afandi Foil membrane lid

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3386614A (en) * 1966-02-23 1968-06-04 Reynolds Metals Co Easy-opening means for a container
US3401824A (en) * 1967-09-07 1968-09-17 American Can Company Inc Full-open can
US3411661A (en) * 1965-10-23 1968-11-19 Walter M. Perry Container with openable segment
US3442416A (en) * 1967-06-19 1969-05-06 Continental Can Co Container having lip protecting means
US3494141A (en) * 1968-04-23 1970-02-10 Wray Jr John Robert Coolant insert with variable discharge orifice
US3643832A (en) * 1970-08-06 1972-02-22 Continental Can Co Pull tab arrangement for easy-opening container

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411661A (en) * 1965-10-23 1968-11-19 Walter M. Perry Container with openable segment
US3386614A (en) * 1966-02-23 1968-06-04 Reynolds Metals Co Easy-opening means for a container
US3442416A (en) * 1967-06-19 1969-05-06 Continental Can Co Container having lip protecting means
US3401824A (en) * 1967-09-07 1968-09-17 American Can Company Inc Full-open can
US3494141A (en) * 1968-04-23 1970-02-10 Wray Jr John Robert Coolant insert with variable discharge orifice
US3643832A (en) * 1970-08-06 1972-02-22 Continental Can Co Pull tab arrangement for easy-opening container

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851787A (en) * 1972-09-25 1974-12-03 Alusuisse Aluminum alloy can end and body
US3894653A (en) * 1974-06-14 1975-07-15 Continental Can Co Child resistant easy opening end unit
DE2842449A1 (de) * 1977-11-21 1979-05-23 Continental Group Einteilige griffflasche aus metall zum hebelartigen oeffnen von leicht zu oeffnenden behaelterdeckeln
US4397403A (en) * 1981-09-18 1983-08-09 Guimarin Container Co., Incorporated Container opening apparatus with captured tab
EP0223776A4 (en) * 1985-05-20 1988-08-29 Weirton Steel Corp Panel structure and manufacturing process.
US5145086A (en) * 1991-05-17 1992-09-08 Krause Arthur A Captive tear tab with protective means for container opening
US20050252917A1 (en) * 2004-05-14 2005-11-17 Timothy Turner Can end with tab for improved accessibility
US7909196B2 (en) 2004-05-14 2011-03-22 Rexam Beverage Can Company Can end with tab for improved accessibility
US20080142521A1 (en) * 2006-12-14 2008-06-19 Ali El-Afandi Foil membrane lid
US9296538B2 (en) * 2006-12-14 2016-03-29 General Mills, Inc. Foil membrane lid
US10583944B2 (en) 2006-12-14 2020-03-10 General Mills, Inc Foil membrane lid

Also Published As

Publication number Publication date
JPS5422531Y2 (cg-RX-API-DMAC10.html) 1979-08-06
ZA728183B (en) 1974-06-26
CA976491A (en) 1975-10-21
JPS4959968U (cg-RX-API-DMAC10.html) 1974-05-27

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