CA2008483A1 - Opening device for tin cans - Google Patents
Opening device for tin cansInfo
- Publication number
- CA2008483A1 CA2008483A1 CA002008483A CA2008483A CA2008483A1 CA 2008483 A1 CA2008483 A1 CA 2008483A1 CA 002008483 A CA002008483 A CA 002008483A CA 2008483 A CA2008483 A CA 2008483A CA 2008483 A1 CA2008483 A1 CA 2008483A1
- Authority
- CA
- Canada
- Prior art keywords
- strip
- lid
- ring
- tearable
- periphery
- 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.)
- Abandoned
Links
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 3
- 230000003313 weakening effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- KRTSDMXIXPKRQR-AATRIKPKSA-N monocrotophos Chemical compound CNC(=O)\C=C(/C)OP(=O)(OC)OC KRTSDMXIXPKRQR-AATRIKPKSA-N 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229940101201 ringl Drugs 0.000 description 1
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
- B65D17/42—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions with cutting, punching, or cutter accommodating means
- B65D17/46—Wires, strings or the like, e.g. rip cords
- B65D17/462—Tearing-strips or -wires
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers Opened By Tearing Frangible Portions (AREA)
- Closures For Containers (AREA)
- Holders For Apparel And Elements Relating To Apparel (AREA)
Abstract
ABSTRACT
Device for opening tin cans, fundamentally characterised because it consists of the positioning - on the top or upper base of the can in question - of a pair of parallel weakened lines, very close together and in turn situated in proximity to the edge of the lid and which form a narrow tearable band which begins at a point in the periphery of the lid and which, running around the majority of the said periphery, conclude where the said strip is jointly attached, by means of a rivet or any other conventional means, to a ring for tearing the said strip, by direct traction on the same, or by turning and progressively rolling the tearable strip around the arm by which the said ring is attached to the strip.
Device for opening tin cans, fundamentally characterised because it consists of the positioning - on the top or upper base of the can in question - of a pair of parallel weakened lines, very close together and in turn situated in proximity to the edge of the lid and which form a narrow tearable band which begins at a point in the periphery of the lid and which, running around the majority of the said periphery, conclude where the said strip is jointly attached, by means of a rivet or any other conventional means, to a ring for tearing the said strip, by direct traction on the same, or by turning and progressively rolling the tearable strip around the arm by which the said ring is attached to the strip.
Description
OPENING DEVICE FOX TIN CANS
D E_S C R I P T I O N
OBJECT OF THE INVENTION
This invention refers to a device for opening tin cans, of the type which are commonly called "easy-to-op~n", and whose lid~ have a weakening so that true opening is performed by "tearin~'` by means of simple manual traction, and no~ by means of cutting with an auxillary tool, that is, with a can opener.
ANTECEDE~TS OF THE INVENTION
As is known, one of the most recent solutions for opening tln cans consists of providing the lid of the said cans with a weakened line which is perimetrical and close to the edge o~ the lid, fixing a coplanal ring close to the edge, to ~he actual lid's central sector, which is the lar~est part of the said lid and can be removed. The actual movement of swinging the ring towards a perpendicular position, in order to grip it ~an~ally, provokes an initial cut in the said lid along its weakened line, in such a way that subsequent manual traction on tlle said ring, by introducing a finger in the same, provokes the progressive tearing of the lid with respect to the body of the can.
This solution, which at first sight is extraordinarily quick and simple, in practice presen-ts two important problems: on one hand it requires significant physical effort because the tearin8 Of the lid occurs simultaneously at two considerably - ~ - . . . .
;~ 3 distant points which are permanently main-tained by a creased line on tllat lid, which is considerably long and ~iaries along its len~tll, whic~l de~lands significant mec~lanical effort, and on the o~her hand, the can has a small space of manual suction, handllng of the grlp is complicated and this leads to a high risk of Gutting by the actual edge of the lid on removal.
~CRIPTION OF THE INVENTION
The device for opening tin cans as proposed by the ~nvention, completely and satisfactorily solves the different aspects of this problem, enabling really easy opening, because minimal effort is needed and the risk of accident by cutting practically d1sappears due to the small amount of force that opening requires, and better conditions for gripping the can manually.
Therefore, and more speciflcally, the devi~e envisa~ed takes tlle classical idea of weakening the can lid, and focuses ~ts characterlstics in the presence of two weakened linesl very close together, which run around the periphery of the lid, situated with maximum closeness to the edgel defining a narrow tearable strip. At one of the ends of both of these there is the classical ring of manual action. This enables the said strip to be torn well by direct traction on the said ringl by turning the same, as the tearable strip rolls progressively around the arm of .: . . . . ~
the rin$ to which it is fixed.
In any case, given the narrowness of the said tearable strip, and appropriately weakened lines, the force which is needed to tear the same is minimal. In addition, during this manoe~vre, it is not the whole of the lid that is subjected to strain on openin~, but only t~le ~aid narrow marginal strip, which ylald~ under minimal effort. The main central sector of the lid m~lntains its initial position, coplanally with the top of the ~an~ The can is consequently definitively opened when the strip 1~ r~moved. This is specifically achieved by depressing the said main central sector of the lid on the marginal zone of the same which provides the joining link or neck with the body. This manoeuvre does not need an appreciable force either, nor does it imply the slightest risk.
DESCRIPTION OF THE ~IAGRAMS
To complement this description and with the ob;ect of ~nabling a better understanding of the characteristics of the inv~ntion, this descriptive report is accompanied by one page of dia~rams. This forms an integral part of the description, is of an illustrative and not limitative character and represents the ~ollowing:
Figure 1.- This shows a perspective view of a tin can ~hich has the opening device which forms the object of this .
' ~
r 4 invention. The device is shown in sltu at an intermediary stage ~f openin~ The two possibilities of action on the corresponding tearable strip are shown.
Figure ~.- This shows a -top view of the same can as in the foregoing figure, in a closed position.
Fl~ure 3.- Lastly, thls shows a cross-sectlon of the lid of the can as represented in the foregoin~ figures, with the ~aid opening de~ice in situ.
PREFERENTIAL METHOD OF USING THE INVENTION
By lookin~ at these figures i~ can be seen how the ~nvisaged opening device is applied to tin cans 1 which may be shaped as in the figures, i.e., with an oval sole, but they could Al~o equally have a circular, square or rectangular sole, witb round vertices~ The said device is fixe~d on the lid or upper base ~ There is a pair of weakened lines 3 which are very close togetller and are also very close to the edge of the lid 2, as can ba seen particularly in figures 2 and 3. The weakened lines can be made exclusively at the expense of the exterior side of the lid 2, or at the expense of both its exterior side and its interior side, as shown in figure 3. In any case, the lines form a narrow tearable strip 4 between them, which runs around the ma;ority of the perimeter of the lid 2 from an initlal point 6 to a end point 5 where the said strip 4 is attached, by means of a rivet 7 or by any other conventional means, to a ring 8 of manual :: ' '' , ' '' :
~ ' : ' . ' :
~ctio~.
In ac~ordan~e with t}l1s structurlng, ln order to perform the opening of the can, traction is s1mply placed on the said ring 8, as shown in figure 1, a turn is made in accordance with that shown in 8~ of the said figure, so that, with minimal ef~ort, the tearable strip 4 comes away from the rest of the lid orming a narrow perimetrical window which affects the ority of the perimeter of the lid 2, with the exception of a s}lort stretch 10, by which the main central sector can be depressed, ln the direction of the opening, after removing the t~arable strip 4, achieving the true opening of the can.
As was said before, and can be seen clearly in figure 1, the envisaged openlng device enables the tearable strip 4 to b~ removed by simple traction on the rin8 8, or removing it by turning the said ring, progressively rolling the strip 4 around the arm 11 of the same, in which case the effort needed is even l~ss, if this is possible.
As was also said before, the can may have the classic oval shape as in the figure, a cylindrical, prismatical, rectangular, or aily other shape, without this havin~ any affect ~t all on the opening device on which the object of this invention is focused.
It is not considered to be necessary to make this description any more extensive in order that any expert on this - . ' ' , . . .
,. ~ .
.
r ~ 6 sub;ect sllould understand the significance of the invention and the advanta~es which are derived thereof.
The materials, form, shape and position of the elements are susceptible to variation, provided that this does not alter the fun~amental nature of the invention.
The terms in wllich this report has been wrltten should ~lway~ be considered in a broad and no~ limited sense.
.
~, .-,:. . ~ - . , - .. ~ .~. ... . .
' '-' ' :' - , '.' ` '` '''' :~. . . .
.
D E_S C R I P T I O N
OBJECT OF THE INVENTION
This invention refers to a device for opening tin cans, of the type which are commonly called "easy-to-op~n", and whose lid~ have a weakening so that true opening is performed by "tearin~'` by means of simple manual traction, and no~ by means of cutting with an auxillary tool, that is, with a can opener.
ANTECEDE~TS OF THE INVENTION
As is known, one of the most recent solutions for opening tln cans consists of providing the lid of the said cans with a weakened line which is perimetrical and close to the edge o~ the lid, fixing a coplanal ring close to the edge, to ~he actual lid's central sector, which is the lar~est part of the said lid and can be removed. The actual movement of swinging the ring towards a perpendicular position, in order to grip it ~an~ally, provokes an initial cut in the said lid along its weakened line, in such a way that subsequent manual traction on tlle said ring, by introducing a finger in the same, provokes the progressive tearing of the lid with respect to the body of the can.
This solution, which at first sight is extraordinarily quick and simple, in practice presen-ts two important problems: on one hand it requires significant physical effort because the tearin8 Of the lid occurs simultaneously at two considerably - ~ - . . . .
;~ 3 distant points which are permanently main-tained by a creased line on tllat lid, which is considerably long and ~iaries along its len~tll, whic~l de~lands significant mec~lanical effort, and on the o~her hand, the can has a small space of manual suction, handllng of the grlp is complicated and this leads to a high risk of Gutting by the actual edge of the lid on removal.
~CRIPTION OF THE INVENTION
The device for opening tin cans as proposed by the ~nvention, completely and satisfactorily solves the different aspects of this problem, enabling really easy opening, because minimal effort is needed and the risk of accident by cutting practically d1sappears due to the small amount of force that opening requires, and better conditions for gripping the can manually.
Therefore, and more speciflcally, the devi~e envisa~ed takes tlle classical idea of weakening the can lid, and focuses ~ts characterlstics in the presence of two weakened linesl very close together, which run around the periphery of the lid, situated with maximum closeness to the edgel defining a narrow tearable strip. At one of the ends of both of these there is the classical ring of manual action. This enables the said strip to be torn well by direct traction on the said ringl by turning the same, as the tearable strip rolls progressively around the arm of .: . . . . ~
the rin$ to which it is fixed.
In any case, given the narrowness of the said tearable strip, and appropriately weakened lines, the force which is needed to tear the same is minimal. In addition, during this manoe~vre, it is not the whole of the lid that is subjected to strain on openin~, but only t~le ~aid narrow marginal strip, which ylald~ under minimal effort. The main central sector of the lid m~lntains its initial position, coplanally with the top of the ~an~ The can is consequently definitively opened when the strip 1~ r~moved. This is specifically achieved by depressing the said main central sector of the lid on the marginal zone of the same which provides the joining link or neck with the body. This manoeuvre does not need an appreciable force either, nor does it imply the slightest risk.
DESCRIPTION OF THE ~IAGRAMS
To complement this description and with the ob;ect of ~nabling a better understanding of the characteristics of the inv~ntion, this descriptive report is accompanied by one page of dia~rams. This forms an integral part of the description, is of an illustrative and not limitative character and represents the ~ollowing:
Figure 1.- This shows a perspective view of a tin can ~hich has the opening device which forms the object of this .
' ~
r 4 invention. The device is shown in sltu at an intermediary stage ~f openin~ The two possibilities of action on the corresponding tearable strip are shown.
Figure ~.- This shows a -top view of the same can as in the foregoing figure, in a closed position.
Fl~ure 3.- Lastly, thls shows a cross-sectlon of the lid of the can as represented in the foregoin~ figures, with the ~aid opening de~ice in situ.
PREFERENTIAL METHOD OF USING THE INVENTION
By lookin~ at these figures i~ can be seen how the ~nvisaged opening device is applied to tin cans 1 which may be shaped as in the figures, i.e., with an oval sole, but they could Al~o equally have a circular, square or rectangular sole, witb round vertices~ The said device is fixe~d on the lid or upper base ~ There is a pair of weakened lines 3 which are very close togetller and are also very close to the edge of the lid 2, as can ba seen particularly in figures 2 and 3. The weakened lines can be made exclusively at the expense of the exterior side of the lid 2, or at the expense of both its exterior side and its interior side, as shown in figure 3. In any case, the lines form a narrow tearable strip 4 between them, which runs around the ma;ority of the perimeter of the lid 2 from an initlal point 6 to a end point 5 where the said strip 4 is attached, by means of a rivet 7 or by any other conventional means, to a ring 8 of manual :: ' '' , ' '' :
~ ' : ' . ' :
~ctio~.
In ac~ordan~e with t}l1s structurlng, ln order to perform the opening of the can, traction is s1mply placed on the said ring 8, as shown in figure 1, a turn is made in accordance with that shown in 8~ of the said figure, so that, with minimal ef~ort, the tearable strip 4 comes away from the rest of the lid orming a narrow perimetrical window which affects the ority of the perimeter of the lid 2, with the exception of a s}lort stretch 10, by which the main central sector can be depressed, ln the direction of the opening, after removing the t~arable strip 4, achieving the true opening of the can.
As was said before, and can be seen clearly in figure 1, the envisaged openlng device enables the tearable strip 4 to b~ removed by simple traction on the rin8 8, or removing it by turning the said ring, progressively rolling the strip 4 around the arm 11 of the same, in which case the effort needed is even l~ss, if this is possible.
As was also said before, the can may have the classic oval shape as in the figure, a cylindrical, prismatical, rectangular, or aily other shape, without this havin~ any affect ~t all on the opening device on which the object of this invention is focused.
It is not considered to be necessary to make this description any more extensive in order that any expert on this - . ' ' , . . .
,. ~ .
.
r ~ 6 sub;ect sllould understand the significance of the invention and the advanta~es which are derived thereof.
The materials, form, shape and position of the elements are susceptible to variation, provided that this does not alter the fun~amental nature of the invention.
The terms in wllich this report has been wrltten should ~lway~ be considered in a broad and no~ limited sense.
.
~, .-,:. . ~ - . , - .. ~ .~. ... . .
' '-' ' :' - , '.' ` '` '''' :~. . . .
.
Claims
The embodiments of the invention in which an exclu-sive property or privilege is claimed are defined as follows:
1st.- Device for opening tin cans, fundamentally characterised because it consists of the positioning - on the top or upper base of the can in question - of a pair of parallel weakened lines, very close together and in turn situated in proximity to the edge of the lid and which form a narrow tearable band which begins at a point in the periphery of the lid and which, running around the majority of the said periphery, conclude where the said strip is jointly attached, by means of a rivet or any other conventional means, to a ring for tearing the said strip, by direct traction on the same, or by turning and progressively rolling the tearable strip around the arm by which the said ring is attached to the strip.
1st.- Device for opening tin cans, fundamentally characterised because it consists of the positioning - on the top or upper base of the can in question - of a pair of parallel weakened lines, very close together and in turn situated in proximity to the edge of the lid and which form a narrow tearable band which begins at a point in the periphery of the lid and which, running around the majority of the said periphery, conclude where the said strip is jointly attached, by means of a rivet or any other conventional means, to a ring for tearing the said strip, by direct traction on the same, or by turning and progressively rolling the tearable strip around the arm by which the said ring is attached to the strip.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESU-8900208 | 1989-01-25 | ||
| ES19898900208U ES1009482Y (en) | 1989-01-25 | 1989-01-25 | OPENING DEVICE FOR CANNED CANS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2008483A1 true CA2008483A1 (en) | 1990-07-25 |
Family
ID=8259984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002008483A Abandoned CA2008483A1 (en) | 1989-01-25 | 1990-01-24 | Opening device for tin cans |
Country Status (8)
| Country | Link |
|---|---|
| CA (1) | CA2008483A1 (en) |
| DE (1) | DE4001804A1 (en) |
| ES (1) | ES1009482Y (en) |
| FR (1) | FR2642044A1 (en) |
| GB (1) | GB2227475A (en) |
| IT (1) | IT1238319B (en) |
| MA (1) | MA21738A1 (en) |
| PT (1) | PT92942A (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1689627A (en) * | 1923-09-11 | 1928-10-30 | American Can Co | Key-opening can |
| FR788643A (en) * | 1935-04-11 | 1935-10-14 | Leaktight metal container opening device | |
| US2112231A (en) * | 1936-05-23 | 1938-03-29 | Edwin F M Speidel | Container |
| US2946478A (en) * | 1958-09-22 | 1960-07-26 | Kelsey Hayes Co | Opening means for sealed containers |
| IT649860A (en) * | 1960-05-10 | |||
| US3151766A (en) * | 1961-02-10 | 1964-10-06 | Continental Can Co | Pull tab tear strip combination for metal can end |
| GB1034860A (en) * | 1963-12-23 | 1966-07-06 | British Aluminium Co Ltd | Improvements in or relating to sheet metal joints, and methods of producing same |
| US3221923A (en) * | 1964-01-03 | 1965-12-07 | Continental Can Co | Multi-paneled metal can-end with scored and beaded tear strip |
| US3357388A (en) * | 1964-11-25 | 1967-12-12 | Aluminum Co Of America | Composite article and method |
| US3406865A (en) * | 1966-05-03 | 1968-10-22 | George A. Tinnerman | Pull tab for opening container |
| NO120458B (en) * | 1966-10-05 | 1970-10-19 | Aluminum Co Of America |
-
1989
- 1989-01-25 ES ES19898900208U patent/ES1009482Y/en not_active Expired - Lifetime
-
1990
- 1990-01-18 IT IT01909890A patent/IT1238319B/en active IP Right Grant
- 1990-01-23 FR FR9001159A patent/FR2642044A1/en active Pending
- 1990-01-23 DE DE4001804A patent/DE4001804A1/en not_active Withdrawn
- 1990-01-24 GB GB9001651A patent/GB2227475A/en not_active Withdrawn
- 1990-01-24 MA MA22000A patent/MA21738A1/en unknown
- 1990-01-24 PT PT92942A patent/PT92942A/en not_active Application Discontinuation
- 1990-01-24 CA CA002008483A patent/CA2008483A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| IT1238319B (en) | 1993-07-12 |
| GB2227475A (en) | 1990-08-01 |
| GB9001651D0 (en) | 1990-03-21 |
| ES1009482Y (en) | 1990-02-16 |
| PT92942A (en) | 1990-07-31 |
| IT9019098A1 (en) | 1990-07-26 |
| IT9019098A0 (en) | 1990-01-18 |
| FR2642044A1 (en) | 1990-07-27 |
| MA21738A1 (en) | 1990-10-01 |
| DE4001804A1 (en) | 1990-07-26 |
| ES1009482U (en) | 1989-09-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |