Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3227304 A
Publication typeGrant
Publication dateJan 4, 1966
Filing dateSep 8, 1964
Priority dateSep 8, 1964
Publication numberUS 3227304 A, US 3227304A, US-A-3227304, US3227304 A, US3227304A
InventorsAshury Charles T
Original AssigneeAshury Charles T
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Can opening arrangement
US 3227304 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan. 4, 1966 c. 'r. ASBURY 3,227,304

CAN OPENING ARRANGEMENT Original Filed Aug. 12, 1963 INVENTOR.

CHARLES T. ASBURY Twsmzw w vv ww ATTORN EYS United States Patent 3,227,304 CAN OPENING ARRANGEMENT Charles T. Asbury, 717 Isie of Palms, Fort Lauderdale, Fla. Continuation of application Ser. No. 301,566, Aug. 12, 1963. This application Sept. 8, 1964, Ser. No. 394,895

8 Claims. (Cl. 220--48) This invention relates to easy open container lids such as are used for beverages and the like and is particularly concerned with an improvement in such lids which is simpler and more inexpensive to manufacture and easier to manipulate. The present application discloses an invention which is a continuation of and an improvement in the invention disclosed in my co-pen-ding application Serial No. 301,566 filed August 12, 1963.

Easy open container lids of the nature with which the present invention is concerned generally comprise a lid of aluminum or a relatively soft aluminum alloy which has a scored region therein along which the lid can be torn. Some of the lids of this type have a scored tab with a lever attached to the tab so that the entire tab can be torn out to provide a pouring opening in the lid. Other types have a score line extending substantially completely around the lid in from the edge thereof, and in this case, the entire center portion of the lid can be torn out.

The majority of the easy open can lids are of the type in which a tab is pulled out to form a pulling opening. This type lid is used substantially for all type beverages and liquids which do not require the entire lid to be removed to gain access to the contents of the container. A particularly troublesome aspect of this type of easy open lid, however, is the attaching of the rivet to the tab to be torn out. The rivet is generally attached by drawing a bubble or blister on the tab, dropping an apertured member over the blister and then pressing the blister down so as to rivet the member to the tab. This is. an expensive, time-consuming operation and great care must be employed to prevent any interruption in the surface of the lid.

The present invention is concerned with the provision of an easy open lid in which the diificulty of attaching a pull member to the tab or portion of the lid to open is eliminated and instead, the lid is so arranged and proportioned that the tab or region of the lid to be opened can be pressed inwardly of the lid. According to the present invention, the lid is stiffened and reinforced by ribbing :such that the application of pressure to the tab to be pressed inwardly will be effective for tearing the tab from the lid and permitting it to move downwardly into the container. The tab to be pushed inwardly is, of course, defined by a score mark in the lid which can either be on top of the lid or on the bottom.

According to the present invention, one or two of the tabs can be provided because each tab and the ribbing or reinforcing pertaining thereto will occupy only onehalf the lid area.

According to the present invention, the push-in tab is protected against being pressed in accidentally by disposing the upper surface of the tab below surrounding surfaces of the lid so that the only way the tab can be torn from the lid and pressed inwardly is by the deliberate exertion of pressure on the tab at a predetermined point.

The nature of the present invention will be more fully understood upon reference to the following specification taken in connection with the accompanying drawings, inv

which: I p

. FIGURE 1 is a somewhat schematic perspective view of a container having a lid constructed according to the present invention;

3,227,304 Patented Jan. 4, 1966 FIGURE 2 is a fragmentary plan view of the container lid drawn at greatly enlarged scale and showing one or two identical halves of the lid;

FIGURE 3 is a sectional view indicated by line IIIIII on FIGURE 2;

FIGURE 3a is a view like FIGURE 3 but shows the opening tab pressed inwardly of the lid;

FIGURE 4 is another sectional View indicated by line IV-IV on FIGURE 2;

FIGURE 5 is a sectional view indicated by line VV on FIGURE 2;

FIGURE 5a is a view like FIGURE 5 but shows the score mark in the top of the lid rather than in the bottom;

FIGURE 6 is a fragmentary plan view showing a modified form of the invention, and

FIGURE 7 is a sectional view indicated by line VII- VII on FIGURE 6.

Referring to the drawings somewhat more in detail, in FIGURE 1, 10 is a can body and 12 is a lid according to the present invention. Lid 12 is made of a blank of thin relatively soft aluminum on the order of from 0.014 to 0.015 inch thick. According to the present invention two scored regions 14 and 16 are provided in the lid about which a score line passes so that these portions can be pressed inwardly of the lid about the inner edges 18 and 29 thereof which are not scored.

As will be seen in FIGURE 2 wherein the pressed-in region 14 is shown, the score line 22 is provided extending about the entire region except the inner edge 18 thereof. Score line 20 is disposed in a depressed flattened region 24 so that it is substantially in a single plane. The region 18 is also preferably substantially in this plane so that the region 14 will hinge inwardly of the lid relatively readily when it is pressed downwardly as by the application of pressure thereto by the thumb.

The pressed-in region or tab 14- is relatively highly crowned as can be seen from the shading in FIGURE 2 and from the shape of the region 14 in FIGURES 3 and 4 where the tab is shown in section. Because of the relatively highly crowned condition of tab 14 it is stiff inwardly of the edges and thus can be subjected to considerable pressure without bending or otherwise deforming. When pressure is exerted on the region in about the center thereof or toward the pointed end thereof, the tab will turn out from the lid and bend inwardly at about the hinge region 18, as will best be seen in FIGURE 3a which shows the tab in torn out depressed condition.

The lid is preferably stiffened by one or more ribs 26 formed therein extending transversely of the lid immediately inwardly of the hinge regions 18 and 20. These ribs can easily be formed in the soft thin metal from which the lid is made and make the lid relatively stiff against bending. These ribs furthermore extend to a greater elevation than the high part of the push-in tabs and thus protect the tabs against being accidentally knocked loose.

Still further, the lid is stiffened by the upwardly convex portion 28 disposed on each side of the push-in tab and also formed to a greater elevation than the tops of the tabs and being at substantially the same elevation as the ribs 26. The push-in tab is thus raised inside raised portions so that it does not accidentally become dislodged or furthermore the entire lid is stiffened by the raised portions.

Still further, the score mark which represents the line along which the press-in tab will turn loose from the lid is disposed inside rounded regions which protect the thumb from coming into contact with the somewhat ragged edge that will remain around the opening after the tab is pushed in.

As will be seen in FIGURE 5, the score line 22 may be on the under side of the lid, and as will be seen in FIGURE 5a, score line 22 can be on top of the lid. Either placement of the score line is satisfactory, but the one under the lid is somewhat preferred because this eliminates any likelihood of soil collecting in the score line.

The flattened region in which the score line is formed preferably terminates in some substantially circular areas 30 at the ends of the score line, and the score line may actually extend part-way around these areas so that the corners of the tab are clearly defined as well as the hinge region 18 so that the tab will bend bodily inwardly when it is torn loose from the lid and pressed downwardly as by the thumb.

FIGURES 6 and 7 show a modification in which an indentation 32 is formed in the lid at the tip end of the tab. This indentation stiffens the tip of the tab and insures that tearing will be initiated at the very tip of the tab, and this will make it easier to press the tab inwardly because the tearing along the score line will proceed from the extreme tip end of the tab toward the rear.

In FIGURES 6 and 7 the score line is indicated at 34 and could be on the top of the lid or on the underneath side if desired.

The general structure of the lid with regard to the extreme peripheral portion and the sealing thereof to a can body is conventional, the entire invention in the present case residing in the formation of the lid inwardiy of the outer periphery thereof, and particularly with respect to the push-in tab regions, the crowning of the tab regions to impart stiffness thereto, the crowning of portions of the lid outwardly of the tab portions to stiffen the lid, the lateral ribbing in the center of the lid to impart stiffness thereto, and the disposing of the more highly crowned portion of the push-in tab or tabs at a level below the periphery of the lid and also below the crowned and ribbed portions of the lid outwardly of the tab or tabs, and which portions themselves are below the elevation of the outermost periphery of the lid.

It will be understood that this invention is susceptible to modification in order to adapt it to different usages and conditions; and accordingly, it is desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.

What is claimed is:

1. An easy open lid adapted for being sealingly mounted on a can body or a like container and comprising; a relatively thin member, at least one score mark in at least one surface of said member defining a tab portion, said score mark extending part-way through the material of said lid and forming a region which will turn upon the application of pressure to said tab portion whereby the tab portion can be pressed inwardly of the container on which the lid is mounted to provide an opening in the lid, said tab portion being substantially V-shaped with its one pointed end near the periphery of the lid and the other end of the tab portion disposed inwardly of the periphery of the lid from said one end of the tab portion, a relatively narrow substantially planar region in the lid in which said score mark is located, said tab portion being crowned toward the center thereof, and non-planar regions formed in the lid in at least the region thereof adjacent said score mark outside the limits of said tab portion to stiffen the lid against bending upon the application of pressure to said tab portion' 2. An easy open lid adapted for being sealingly mounted on a can body or a like container and comprising; a relatively thin member, at least one score mark in at least one surface of said member defining a tab portion, said score mark extending part-way through the material of said lid and forming a region which will turn upon the application of pressure to said tab portion whereby the tab portion can be pressed inwardly of the container on which the lid is mounted to provide an opening in the lid, said tab portion being substantially V-shaped with its one pointed end near the periphery of the lid and the other end of the tab portion disposed inwardly of the periphery of the lid from said one end of the tab portion, a relatively narrow substantially planar region in the lid in which said score mark is located, said tab portion being crowned toward the center thereof, and nonplanar regions formed in the lid in at leart the region thereof adjacent said score mark outside the limits of said tab portion to stiffen the lid against bending upon the application of pressure to said tab portion, said nonplanar regions comprising upwardly convex portions formed in the lid and the uppermost level of the crowned portion of said tab portion.

3. An easy open lid adapted for being sealingly mounted on a can body or a like container and comprising; a relatively thin member, at least one score mark in at least one surface of said member defining a tab portion, said score mark extending part-way through the material of said lid and forming a region which will turn upon the application of pressure to said tab portion whereby the tab portion can be pressed inwardly of the container on which the lid is mounted to provide an opening in the lid, said tab portion being substantially V-shaped with its one pointed end near the periphery of the lid and the other end of the tab portion disposed inwardly of the periphery of the lid from said one end of the tab portion, a relatively narrow substantially planar region in the lid in which said score mark is located, said tab portion being crowned toward the center thereof, and non-planar regions formed in the lid in at least the region thereof adjacent said score mark outside the limits of said tab portion to stiffen the lid against bending upon the application of pressure to said tab portion, said upwardly convex portions of said lid being below the level of the rim of the lid.

4. An easy open lid adapted for being scalingly mount ed on a can body or a like container and comprising; a relatively thin member, at least one score mark in at least one surface of said member defining a tab portion, said score mark extending part-way through the material of said lid and forming a region which will turn upon the applicaiton of pressure to said tab portion whereby the tab portion can be pressed inwardly of the container on which the lid is mounted to provide an opening in the lid, said tab "portion being substantially V- shaped with its one pointed end near the periphery of the lid and the other end of the tab portion disposed inwardly of the periphery of the lid from said one end of the tab portion, a relatively narrow substantially planar region in the lid in which said score mark is located, said tab portion being crowned toward the center thereof, and non-planar regions formed in the lid in at least the region thereof adjacent said score mark outside the limlts of said tab portion to stiffen the lid against bending upon the application of pressure to said tab portion, said nonplanar regions including a rib formed in the lid in the region thereof adjacent the end of said tab opposite the pointed end thereof.

5. An easy open lid adapted for being seahngly mounted on a can body or a like container and comprising; a relatively thin member, at least one score mark in at least one surface of said member defining a tab portion, said score mark extending part-way through the material of said lid and forming a region which will tear upon the application of pressure to said tab portion whereby the tab portion can be pressed inwardly of the container on which the lid is mounted to provide an opening in the lid, a relatively narrow substantially planar regtonun the lid in which said score mark is located, said tab portion being crowned toward the center thereof, and sand 11d comprising upwardly convex portions outwardly of said tab portion, said tab portion being generally V-shaped and having its pointed end near the periphery of the lid and extending from the point end. substantially radially inwardly of the lid and terminating short of the center of the lid, said upwardly convex portions of the lid comprising portions on opposite sides of said tab portion and at least one rib extending transversely of the lid between lthe inner end of the tab portion and the center of the 6. An easy open lid adapted for being sealingly mounted on a can body or a like container and comprising; a relatively thin member, at least one score mark in at least one surface of said member defining a tab portion, said score mark extending part-way through the material of said lid and forming a region which will tear upon the application of pressure to said tab portion whereby the tab portion can be pressed inwardly of the container on which the lid is mounted to provide an opening in the lid, a relatively narrow substantially; planar region in the lid in which said score mark is located, said tab portion being crowned toward the center thereof, and said lid comprising upwardly convex portions outwardly of said tab portion, said tab portion being generally V-shaped and having its pointed end near the periphery of the lid and extending from the point end substantially radially inwardly of the lid and terminating short of the center of the lid, said upwardly convex portions of the lid comprising portions on opposite sides of said tab portion and at least one rib extending transversely of the lid between the inner end of the tab portion and the center of the lid, said score mark being on the upper side of said lid.

7. An easy open lid adapted for being sealingly mounted on a can body or a like container and comprising; a relatively thin member, at least one score mark in at least one surface of said member defining a tab portion, said score mark extending part-way through the material of said lid and forming a region which will tear upon the application of pressure tolsaid tab portion whereby the tab portion can be pressed inwardly of the container on which the lid is mounted to provide an opening in the lid, a relatively planar region in the lid in which said score mark is located, said tab portion being crowned toward the center thereof, and said lid comprising upwardly convex portions outwardly of said tab portion, said tab portion being generally V-shaped and having its pointed end near the periphery of the lid and extending from the point end substantially radially inwardly of the lid and tenninating short of the center of the lid, said upwardly convex portions of the lid comprising portions on opposite sides of said tab portion and at least one rib extending transversely of the lid between the inner end of the tab portion and the center of the lid, said score mark being on the under side of said lid.

8. An easy open lid adapted for being sealin-gly mounted on a can body or a like container and comprising; a relatively thin member, at least one score mark in at least one surface of said member defining a tab portion, said score mark extending part-way through the material of said lid and forming a region which will tear upon the application of pressure to said tab portion whereby the tab portion can be pressed inwardly of the container on which the lid is mounted to provide an opening in the lid, a relatively planar region in the lid in which said score mark is located, said tab portion being crowned toward the center thereof, and said lid comprising upwardly convex portions outwardly of said tab portion, said tab portion being generally V-shaped and having its pointed end near the periphery of the lid and extending from the point end substantially radially inwardly of the lid and terminating short of the center of the lid, said upwardly convex portions of the lid comprising portions on opposite sides of said tab portion and at least one rib extending transverely of the lid between the inner end of the tab portion and the center of the lid, and means for stiffening the point end of said rib portion comprising a recess forming downwardly into the lid from above and encompassing the point end of said tab portion and the region immediately surrounding said rib end portion.

References Cited by the Examiner UNITED STATES PATENTS 2i,\1 12,231 3/ 1938 Speidel 220-54 3,076,584 2/1963 Sherlock 220-27 3,143,256 8/1964 Lazure et a1 222541 THERON E. CONDON, Primary Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2112231 *May 23, 1936Mar 29, 1938Edwin F M SpeidelContainer
US3076584 *Nov 18, 1959Feb 5, 1963Plastic Packaging LtdFluid containers or cartons
US3143256 *Apr 8, 1963Aug 4, 1964Aluminum Co Of AmericaDispensing containers
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3355058 *Dec 6, 1965Nov 28, 1967Asbury Charles TPush-in can lid
US3362569 *Aug 24, 1964Jan 9, 1968Joseph A. GeigerContainer closures with breakable openings
US3472415 *Apr 19, 1968Oct 14, 1969Clarence A ChristmasReceptacle and opening means therefor
US3741432 *Jan 20, 1972Jun 26, 1973Coors Container CoContainer with closure tab and pressure release tab on closure tab
US3759206 *Sep 15, 1971Sep 18, 1973Broken Hill Pty Co LtdPush-in easy-opening closures
US3779417 *Feb 14, 1972Dec 18, 1973Klein GFlex tab for a gated can lid
US3786967 *Jun 8, 1972Jan 22, 1974American Can CoPressure relief system for an aerosol container
US3802594 *Oct 26, 1971Apr 9, 1974Lemelson JOpening means for a molded container
US3881630 *Apr 22, 1974May 6, 1975Grise Frederick Gerard JPop-in container closure
US3902626 *Jun 6, 1974Sep 2, 1975Aluminum Co Of AmericaEasy opening container component
US3902627 *Jun 11, 1974Sep 2, 1975Kaiser Aluminium Chem CorpEasy open end
US3912114 *Oct 12, 1973Oct 14, 1975Aluminum Co Of AmericaDigitally openable container closure
US3929251 *May 7, 1973Dec 30, 1975Aluminum Co Of AmericaContainer wall with rupturable weakening line
US3938455 *Nov 7, 1974Feb 17, 1976Aluminum Company Of AmericaMethod of forming and a construction for a digitally openable container closure
US3946683 *May 2, 1974Mar 30, 1976Aluminum Company Of AmericaTabless container opening device and method and tools for forming the same
US3977341 *Mar 13, 1975Aug 31, 1976Aluminum Company Of AmericaEasy opening container component
US4027612 *Jul 16, 1975Jun 7, 1977Continental Can Company, Inc.Method for forming container scored metal flap areas
US4056210 *Sep 13, 1976Nov 1, 1977Maryland Cup CorporationSplash proof drink through beverage container lid
US4081103 *Mar 26, 1976Mar 28, 1978Allen Peter ZoellickCover for drinking containers
US4105133 *May 10, 1976Aug 8, 1978Aluminum Company Of AmericaContainer wall with rupturable weakening line
US4186842 *Oct 27, 1977Feb 5, 1980Inventor's Inc.Disposable drinking cup with valved lid
US4252247 *Nov 16, 1979Feb 24, 1981Asbury Charles TTear-open can lid with push-in tabs
US4411370 *Jun 17, 1982Oct 25, 1983Tetra Pak Developpement SaOpening arrangement for cans
US4449015 *May 18, 1981May 15, 1984Proto Production Plastics, Inc.Connector cover with multiple mounting means
US4518096 *May 12, 1983May 21, 1985Maryland Cup CorporationDrink-through container lid with removable drink-through section
US7942285 *Nov 28, 2005May 17, 2011Daiwa Can CompanyEasily-openable can lid
US8567158Aug 6, 2010Oct 29, 2013Ball CorporationContainer end closure with optional secondary vent opening
US9233784Nov 2, 2012Jan 12, 2016Ball CorporationVented metallic container end closure
US9446879Oct 29, 2013Sep 20, 2016Ball CorporationContainer end closure with optional secondary vent opening
US9694935Mar 5, 2014Jul 4, 2017Ball CorporationEnd closure with a ring pull actuated secondary vent
US9714115Jul 29, 2015Jul 25, 2017Ball CorporationVented container end closure
US20080197132 *Nov 28, 2005Aug 21, 2008Daiewa Can CompanyEasily-Openable Can Lid
USD691039Oct 27, 2011Oct 8, 2013Ball CorporationVented container end closure
USD715144Nov 13, 2012Oct 14, 2014Ball CorporationVented container end closure
USD715647Nov 28, 2012Oct 21, 2014Ball CorporationVented end closure
USD727725 *Aug 21, 2013Apr 28, 2015Ball CorporationVented container end closure
USD749415Sep 11, 2014Feb 16, 2016Ball CorporationContainer end closure
USD750488Sep 11, 2014Mar 1, 2016Ball CorporationEnd closure
USD762114Mar 5, 2015Jul 26, 2016Ball CorporationVented container end closure
USRE28910 *Apr 4, 1975Jul 20, 1976The Broken Hill Proprietary Company LimitedPush-in easy-opening closures
DE2339929A1 *Aug 3, 1973Mar 28, 1974Aluminum Co Of AmericaBehaelterwandung mit aufreissbarer kerblinie
EP0127837A2 *May 22, 1984Dec 12, 1984Schmalbach-Lubeca AGMethod and arrangement for the production of scoring lines in sheet metal, particularly for the production of tear-off tops of cans or the like containers
EP0127837A3 *May 22, 1984May 29, 1985Schmalbach-Lubeca GmbhMethod and arrangement for the production of scoring lines in sheet metal, particularly for the production of tear-off tops of cans or the like containers
EP0127968A2 *May 14, 1984Dec 12, 1984Fort Howard Cup CorporationFlexible plastics lids
EP0127968A3 *May 14, 1984Nov 6, 1985Maryland Cup CorporationFlexible plastics lids
WO1980002133A1 *Mar 29, 1979Oct 16, 1980K TaniuchiEasy-to-open lid for container
WO1980002272A1 *Apr 18, 1979Oct 30, 1980K TaniuchiEasy-to-open top container
Classifications
U.S. Classification220/268, D09/438, 222/541.6
International ClassificationB21D51/44, B21D51/38, B65D17/28, B65D17/32
Cooperative ClassificationB65D17/161
European ClassificationB65D17/16B