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Publication numberUS3883033 A
Publication typeGrant
Publication dateMay 13, 1975
Filing dateMar 15, 1974
Priority dateMar 15, 1974
Publication numberUS 3883033 A, US 3883033A, US-A-3883033, US3883033 A, US3883033A
InventorsBrown Roland Clough
Original AssigneeBrown Roland Clough
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Instant twistopen can
US 3883033 A
Abstract
A metal can now requires a key, an old-fashioned lever-type, a punch-type can opener, a pullring to open up a slot or to flip off the top, or an electric can opener machine, an expensive item. Possessed of the instant invention, the can may be easily opened by simply twisting off the lid on either end or both halves at the middle for nonliquid containing cans. Steel cans are assembled from a rolled up flat sheet and circular tops. In the TwisTOpeN cans this flat sheet is scored near the top and bottom edges and at the centerline to permit easy twisting off of either lid, or the top half, as desired, by hand when the can is opened. The easy-opening feature by twisting is handy at picnics or when a can opener is not available. The can itself, after opening, then becomes a mug in one case and two half-mugs in the other. Both are useful in themselves, especially on an outing. In an aluminum drawn can, the scores usually are made at the center and near the top to facilitate grasping when twisting off the top portion. However, it may be scored both top, bottom and center, as desired, like the steel can. The opening action takes but an instant as the lid or top portion shears off at the score mark selected and then, if necessary, is finally broken clear off at the weld line by repeated hinging action.
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United States Patent 1 Brown 51 May 13,1975

[ INSTANT TWISTOPEN CAN [76] Inventor: Roland Clough Brown, 425

Stratford Ct., Del Mar, Calif. 92014 [22] Filed: Mar. 15, 1974 [21] Appl. No; 451,420

[52] US. Cl. 220/266 [51] Int. Cl B65d 41/32 [58] Field of Search 220/27, 47, 48, 266; 222/541; 206/498; 215/32 [56] References Cited UNITED STATES PATENTS 2,073,941 3/1937 Lowen 222/541 3,216,562 11/1965 Lockwood 206/498 Primary ExaminerGeorge T. Hall [57] ABSTRACT A metal can now requires a key, an old-fashioned lever-type, a punch-type can opener, a pullring to open up a slot or to flip off the top, or an electric can opener machine, an expensive item. Possessed of the instant invention, the can may be easily opened by simply twisting off the lid on either end or both halves at the middle for nonliquid containing cans. Steel cans are assembled from a rolled up flat sheet and circular tops. 1n the TwisTOpeN cans this flat sheet is scored near the top and bottom edges and at the centerline to permit easy twisting off of either lid, or the top half, as desired, by hand when the can is opened. The easyopening feature by twisting is handy at picnics or when a can opener is not available. The can itself, after opening, then becomes a mug in one case and two half-mugs in the other. Both are useful in themselves, especially on an outing. in an aluminum drawn can, the scores usually are made at the center and near the top to facilitate grasping when twisting off the top portion. However, it may be scored both top, bottom and center, as desired, like the steel can. The opening action takes but an instant as the lid or top portion shears off at the score mark selected and then, if necessary, is finally broken clear off at the weld line by repeated hinging action.

12 Claims, 6 Drawing Figures INSTANT TWISTOPEN CAN The instant invention relates to a new and useful selfopening can of metal or plastic material, much needed in the packaging industry for convenience of the public, and providing instant opening at less cost to manufacture then scored fliptop or slottop cans requiring pullrings to open.

It is the primary object of the invention to enable the can user to open a can instantly without any other device such as a key or can openers of any type.

In conjunction with the above primary object, it is also a significant object of the invention to avoid the necessity of possession of any type of can opener whenever a can is desired to be opened, especially an expensive one like the electric-type can opener.

Likewise, another object of the invention is to save the time that sometimes results from searching for a can opener instead of utilizing the potential of the instant twistopen can itself.

Another important object of the invention is to save the cost of the metal and tooling used to make the pullrings and the scoring on fliptop and slottop cans.

A dependent object of the former important object is the elimination of pullrings altogether from the litter caused by discarding them in public places, lessening pollution thereby.

A further object of the invention is the elimination of the necessity of any type of can opener, saving its cost thereby.

Still another object of the invention is the creation of either one large mug or two small mugs for use on an outing or picnic when each can is opened for use instead of paper cups or glasses, thus eliminating their need and cost.

Again, an important object of the invention is the extreme simplicity of the opening operation. A twist of the wrist and it is done, even by a female.

Yet again, the most important object of the invention is the sanitary feature. If the can be soiled before opening on the top or bottom by dust or worse, the clean opening of the twisted score mark directly to the contents of the container eliminates any possibility of contamination of the contents as they are withdrawn from the can. Housewives and medical authorities will approve of this unique feature. After opening, use an instant Dial-A-Flow Cap! Basically, the invention provides for the utilization of a top, bottom or center score-marked container which may be instantly opened when desired by twisting action along any chosen score mark near such mark. Usually the top is grasped and the top is twisted to either the right or left until it comes off. It may still hang on at the weld line. If so, it may be removed by repeated hinging action of the top at this point until the weld line brakes. This feature is useful, too, in that it prevents quick movements which could result in cuts from the sharp edges along the score mark in careless twisting and hinging movements. The can is now ready to empty its contents into the bowl or pan. With liquids, it is better to open the can over a bowl to catch any spills.

The instant twistopen can is an integral can opener in itself and no other tools or opener devices are re quired for the operation of getting out the contents of the container.

In addition, the need for a can opener may be forever dismissed from your mind when packing for an outing or a picnic. Instead, just toss in instant twistopen cans and relax! These, together with other objects and advantages, which will become subsequently apparent reside in the details of assembly and operation as more fully hereinafter described and claimed, reference being made to the accompanying drawing forming a part hereof, wherein like numerals refer to like parts throughout and in which:

FIG. 1 is a full size broken top view of a steel material container for product contents, shown without the top press-embossed TwisTOpeN instruction, or other opening and litter instruction, in a phantom annular area for the user, usually along with a tailless arrow, indicating directions of twist in an arc between the center and the perimeter of the said container;

FIG. 2 is a full size broken side view of the said container, showing the weld line and the location of three score marks, suggesting various openings: near the top and bottom, for a lid removal opening, and at the center, for a center opening;

FIG. 3 is a full size broken bottom view of the said container, shown without the bottom press-embossed TwisTOpeN" in the phantom annular area and the tailless arrow, like the said top view;

FIG. 4 is a full size end view of the flat development of the cylindrical part of the said container, showing three score marks;

FIG. 5 is a full size top view of the said flat development of the cylindrical part of the said container before forming, showing weld laps at the top and bottom ends and the location of three score marks suggested for usual openings;

FIG. 6 is a full size, twice broken open, side view of an aluminum or plastic container for product contents, shown in half-section in its bottom part with three score marks indicated for various openings as desired. A full size top view of the said container is not shown since it is the same in size and shape as described above in FIGS. 1 and 3.

Referring now specifically to the drawing, in FIGS. 1-6, beginning at the left top of the erect drawing in FIG. 1 there is shown a top cover 1 and again just below in FIG. 2 said top cover is shown again along with three score marks 2 and bottom cover 3, while in FIG. 3 the said bottom cover displays the phantom annular area 4 and the twoway arrow 5, then above again in FIG. 2 is shown the weld line 6 and the formed container body 7, now glancing to the right top of the erect drawing in FIG. 4 is shown the end view of the flat development of the said container body with three score marks, while just below in FIG. 5 is shown the top view of the flat development of the said container body with weld laps 8, and finally in the bottom right corner of the erect drawing is shown the top lid 9 of the formed container 10 with its three said score marks in FIG. 6.

To assemble the self-opening can of any material, the usual press operations of blanking, stamping, scoring and forming, then welding and crimping are utilized in pressed steel container production, while blanking, stamping, drawing, scoring and crimping are usual in aluminum container production, and molding is common in plastic container production before final filling of the containers with products, crimping on the cover or lid and labeling. The label usually is narrow enough to reveal the top and bottom score marks and short enough to reveal the center and any other score marks to the user. For wrap around or coverall labels, holes are punched in the labels, usually near the ends, to reveal the location of each selected score mark.

To open a can, the user grasps it around its cylindrical surface below the cover score mark with one hand and then grasps the cover rim with the ends of the fingers and the heel of the other hand, usually over a bowl if the contents are liquid to catch any spill on sudden opening, and twists the cover with the top hand while holding the can firmly with the bottom hand. The can gives way along the score mark, where the section is weakened by torsional stress, and the lid comes off cleanly in aluminum and plastic cans without any weld line, while the cover in steel cans may still remain unbroken at the weld point, and is then finally broken off by repeated hinging action at the weld point. The can is now opened and the contents may be emptied, usually into a bowl, for further processing when cooking is required, or for instant use when no further processing is needed.

The remains of the cans are useful as receptacles for measuring out liquids or for use as mugs on outings and picnics. Covers and lids are discarded. Where the center score mark is used, instead of the score marks near the cover or lid for opening by twisting action, the two equal half size receptacles resulting from opening are found useful too as mugs for children and twice the number of half the capacity. No litter from fliptops or pullrings occurs. By utilization of the receptacles formed from TwisTOpeN cans, the chances of litter from whole cans is also reduced.

To avoid cuts from the sharp edges of the containers when the cover, lid or top half is removed by the twisting action of opening, care is taken to open the can slowly and surely by twisting in either direction until the shear occurs at the score mark selected, then bending the cover back and forth at the weld point in steel cans, is repeated hinging action, slowly, until the cover is freed from the can. Thereafter, be careful of the sharp edges at the score mark and handle these edges with respect like a knife. Emory cloth dulls sharp edges.

From the foregoing, it will be appreciated that a unique system for quickly opening any metal or plastic container, without the need of any opening tool or machine, has been devised by means of the instant Twis- TOpeN scored container, soon to be featured on all cans. Containers are normally made of steel, aluminum or plastic to which this unique opening system applies.

The foregoing is considered as illustrative only of the principles of the instant invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact fabrication and operation shown on the drawing and described herein, and, accordingly, all suitable modifications and equivalents may be resorted to, as, for example, non-cylindrical containers like sardine cans of square, rectangular or oval instead of circular cross-section as well as shorter or longer height between top and bottom ends as desired, or plastic rather than metal material.

What is claimed is as follows:

1. An improvement on a fabricated metal container for product contents, consisting of a formed center part of length desired and of geometrically-shaped cross section, fitted with a top and a bottom captive cover part means to match the cross-section of the said center part, crimped onto the center part at each end, said center part with scored mark means at points desired around its outer surface to weaken the section of the said metal thickness below the scoring for easy breaking under torsional stress from twisting action by the user between the upper and lower portions of the said container, just above and below a selected score mark, thus opening the said container and allowing access to its said contents, all without the assistance of any accessory device by the user except the said container itself.

2. The improvement of claim 1 except that the said captive cover parts are embossed in the metal so as to appear legibly on the outer surface with the opening instructions: TwisTOpeN, underlined with an arrow carrying arrowheads at each end, both the instruction and the twoway arrow arranged in an area midway between the center and the rim of the said captive cover parts.

3. The improvement of claim 1 except that the score marks are located near each end of the said center part of the said container.

4. The improvement of claim 3 except that the tw said score marks are located at any points along the length of the said center part, including the center point, where the two said scored marks would be coincident and located equally far from the ends of the said container.

5. An improvement on a drawn metal container for product contents, consisting of a drawn bottom part, cutoff to the length desired and of geometricallyshaped cross-section, fitted with a top captive cover part means to match the cross-section of the said bottom part, crimped onto the said bottom part at the open end, said bottom part with scored mark means at points as desired around its outer surface to weaken the section of the said metal thickness below the scoring for easy breaking under torsional stress from twisting action by the user between the upper and lower portions of the said container just above and below a selected score mark, thus opening the said container and allowing access to its said contents, all without the assistance of any accessory device by the user except the said container itself.

6. The improvement of claim 5 except that the said captive cover part is embossed in the metal so as to appear legibly on the outer surface with the opening instruction: TwisTOpeN, underlined with an arrow carrying arrowheads at each end, both the instruction and the twoway arrow arranged in an area midway between the center and the rim of the said captive cover part.

7. The improvement of claim 5 except that the said score mark is located near the top end only of the said bottom part of said container.

8. The improvement of claim 7 except that said score marks are located at any two points along the length of the said bottom part, including the center point, where the two said scored marks would be coincident and located equally far from the ends of the said container.

9. An improvement on a molded plastic container for product contents, consisting of a molded bottom part of the length desired and of geometrically-shaped cross-section, fitted with a top captive cover part means to match the cross-section of the said bottom part, sealed to the said bottom part at the open end, said bottom part with scored mark means at points as desired around its outer surface to weaken the section of the said plastic thickness below the scoring for easy said container just above and below a selected score mark, thus opening to said container and allowing access to its said contents, all without the assistance of an accessory device by the user except the said container itself.

10. The improvement of claim 9 except that the said captive cover part is embossed in the plastic so as to appear legibly on the outer surface with the opening instruction: TwisTOpeN, underlined with an arrow carrying arrowheads at each end, both the instruction and the twoway arrow arranged in an area midway between the center and the rim of the said captive lO dent and located equally far from the ends of the said container.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2073941 *Nov 7, 1935Mar 16, 1937Patent Tube CorpContainer closure
US3216562 *Jun 13, 1963Nov 9, 1965Driaire IncEasy-open capsule
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US6325232Sep 21, 2000Dec 4, 2001Effem GmbhProcess for producing a filled container and filled container
US8127955Feb 9, 2007Mar 6, 2012John DennerContainer structure for removal of vacuum pressure
US8152010 *Sep 30, 2003Apr 10, 2012Co2 Pac LimitedContainer structure for removal of vacuum pressure
US8584879Feb 9, 2007Nov 19, 2013Co2Pac LimitedPlastic container having a deep-set invertible base and related methods
US8720163Sep 19, 2010May 13, 2014Co2 Pac LimitedSystem for processing a pressure reinforced plastic container
US9145223Mar 5, 2012Sep 29, 2015Co2 Pac LimitedContainer structure for removal of vacuum pressure
US9211968 *Apr 9, 2012Dec 15, 2015Co2 Pac LimitedContainer structure for removal of vacuum pressure
US20060138074 *Sep 30, 2003Jun 29, 2006Melrose David MContainer structure for removal of vacuum pressure
US20070199915 *Feb 9, 2007Aug 30, 2007C02PacContainer structure for removal of vacuum pressure
US20080047964 *Feb 9, 2007Feb 28, 2008C02PacPlastic container having a deep-set invertible base and related methods
US20110210133 *Sep 19, 2010Sep 1, 2011David MelrosePressure reinforced plastic container and related method of processing a plastic container
US20130068779 *Apr 9, 2012Mar 21, 2013David Murray MelroseContainer structure for removal of vacuum pressure
EP1136380A1 *Mar 19, 2001Sep 26, 2001TRANSCOJECT GESELLSCHAFT FÜR MEDIZINISCHE GERÄTE mbH & CO. KGHermetically closed disposable container
WO1998003406A1 *Jul 18, 1997Jan 29, 1998Effem GmbhMethod of producing a filled container
WO2010114593A1 *Mar 29, 2010Oct 7, 2010Charles ChangAluminum container
Classifications
U.S. Classification220/266
International ClassificationB65D41/32
Cooperative ClassificationB65D17/24
European ClassificationB65D17/24