CA1036521A - Child-resistant closure for metal containers - Google Patents
Child-resistant closure for metal containersInfo
- Publication number
- CA1036521A CA1036521A CA229,280A CA229280A CA1036521A CA 1036521 A CA1036521 A CA 1036521A CA 229280 A CA229280 A CA 229280A CA 1036521 A CA1036521 A CA 1036521A
- Authority
- CA
- Canada
- Prior art keywords
- pull ring
- central panel
- panel portion
- end closure
- opening tab
- 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
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers Opened By Tearing Frangible Portions (AREA)
- Closures For Containers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
In a container for potentially dangerous products, for example automotive products, a metallic end closure is provided having a central panel portion, a displaceable portion defined by a score line included in the central panel portion, an opening tab attached to the displaceable portion proximate the periphery of the central panel portion, the pull ring or handle being radially inward from the point of attachment of the opening tab to the displaceable portion, means on said central panel portion for releasably holding said opening tab substantially flat against said central panel portion and an underlying arcuate channel which permits the handle of the opening tab to nest within the central panel portion thereby resisting opening by hand and providing a child-resistant safety feature in such closures.
In a container for potentially dangerous products, for example automotive products, a metallic end closure is provided having a central panel portion, a displaceable portion defined by a score line included in the central panel portion, an opening tab attached to the displaceable portion proximate the periphery of the central panel portion, the pull ring or handle being radially inward from the point of attachment of the opening tab to the displaceable portion, means on said central panel portion for releasably holding said opening tab substantially flat against said central panel portion and an underlying arcuate channel which permits the handle of the opening tab to nest within the central panel portion thereby resisting opening by hand and providing a child-resistant safety feature in such closures.
Description
BAC~GROUND OF THE INVE~rION
Ea~y-open containers opened by means of a lift~ng force exerted on an openlng tab secured to the removable portion of the container end are well known 1~ the a~t. The most common form o s~ch container~ are the beer and beverage cans in which the removable portion defines 8 comparatively small opening through whic~ the content~ are di~pensed. In another form, the score llne i8 ~ormed to pesmit ~ubstantially c~mplete removal o~
the central panel. Thi~ orm of the container i9 generally termed "full-open" and is ~uitable for use in the packag~ng of solid-like or chunk-like products such as processed food~, pe~nuts, etc. In yet another type, the ~core line de~ines a removable portion that i~ comparat~vely laxger than the ~mall opening~ ~or dispensing beer and be~erage~ but is 8ub~antially Less tha~ in 3 the ull-open end~. This larger partial-ope~ end i3 desi~ned for ~ .
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~, 11)36S;~
1 liquids, particularly liquids such a~ automotiv~ products such as antifreeze or ot~er gna-llne additives~
Containers o the~e types have en~oyed considerable succe~s ln the marketplace, particularly bQcause o~ the eaey accass~bility to theix contents. However, whexe the contents are pot~ntlally dangerous or harmul, this easy-opQning featuxe in many ca~es ceases to be an advantage and becomes a disadvantage which limit~
c~mmercial acceptance ~8 con~umer safety considerat~ons beco~e lncressinglr signi~icant.
Cloaures used on containers or good~ potentially dangerous to young childxen e~p~cially ~hould be rela~i~ely di~icul~ o~
them to open~ At the same time, how~ver, they ~hould be ~u~ici-ently easy to open by individuals, or example, adult~ or whose use the goods arQ intended.
SUMMARY OF THE INVENTION
Thl8 invention i8 directed to closures, of the partial-open type for contalner for potent~ally dangerou~ products such as automotive product~, de~igned to pro~ide a child-resi~t~nt ~eature which is sufficiently difficult to open eo that it cannot be ~ormAlly opened by the average comparatively young child but can be opened without signific~nt diff~culty by th~ a~erage person having reasoning ability ater in~ertion o a small pr~ing tool.
In U.S. Patent 3,780,902 is~ued December 25, 1972 to Henry Sylve~ter Holc ~nd Burton Frank Pillnik and commonly a~signed herewitb, ~here is disclosed an improved end closure o the easy open typ~ compri~ing means on the central pan~l pos~ion or holdlng ~he opening tab sub~tantially flat against the central panel por-tion when lt bulge~ outwardly duQ to the ~nternal pres~ure of the containers, This construction ~8 imminently s~i~able $or con-` ~ 03 6 S ~ ~
1 tainer~ for beverage~ or beer preventing the openin~ tab,the ree end of which may bscGme lifted away fram the cen~ral portion during sterilization or other conditions cau~ng outward, bulging o the central panel portion, from being accidently opened. However, the handle portion thereof i9 adap~ed for ea~e of gra~ping by the user such as by in~ertion through the ring of a u~er's f$nger and.~he mean~ holding the tab a8ain~t the central panel portion are de~lgned to permit the pull ring to be disengaged from the holding means with relstive ea~e. Thus, lo whi~e suitable or prevent~ng opening o~ the tab when the central pan~l bulges outwardl~ due to ln~ernal pre~ure, ~uch nn end ClOBUr~ i8 not de~lgned to be child-resl~tant and do~s not sol~e the need ~or s~ch when potentially d~ngerou~ products are to be contsined.
In accordsnce with thi~ invention, a child-reslstant opening eature i8 provided, in an end clo~ure ha~ing a central panel portion, a displaceable portion d~fined by a score inc~uded ~n the central panel portion, and an opening tab attached to the displaceablQ portion proximat~ the periphery of the central panel portion wherein the pull rlng or handle of the opening tab i8 radially lnward from the point o attachment of the opening tab to the di~placeable portion, by the improv~men~ which com-prl~es a pull ring having an angularly rai~ed end; an arcuate channel in the central panel por~ion underlying the pull ring of the openin~ tab and means or releasably cngaging the pull ring to thereby hold it sub~tan~ially nQsted in 6aid arcuate channel, the angularly rai~ed end deinin~ a space between the een~xal p~nel portion thst i~ lneuficient ~o perm~t ready grasping by hand, More spec~fically, the improvement comprises an axcuate channel $n the central panel portion underlylng the pull 10365Z~
1 ring of the opening tab. The pull ring portion, having flattened lndent~tions and an angularly raised en~, i8 nested in ~he arcuate channel and held therein by bo~ses or hold-down posts on the cen~ral panel, disposed on the inside of the pull r~ng and engaging the flattened lndentations the~eln. The result i~ an opening tab held substantially flat against the central panel portion with a pull ring portion that i~ nested withln the centr~l panel portion, the angularly raised end deining a space between the ce~tral panel ~hat iB ~uficient to permit insertion o a ~mall prying tool but insu~ici~nt to be easily grasped or lited by the user'~ inger~.
The present inventlon will be described and under~tood more readily when consid~red with th~ embodiments o the accompanying drawings, in which:
Figure 1 i~ a top plan view of a container end clo~ure o~
this inventlon.
Figur¢ 2 i8 a bottom plan ~iew of a contalner end closure oP
this invention~
Flgure 3 ia an anlarged cross-sectional ~iew of the end of F~gure 1 taken along line 3~3, Flgure 4 i~ an en~rged partial sectional view of the end of Flgure 1 taken ~long line 4-4.
Flgure S i8 an enlarged partial sec~ional view of the end o~ Figure 1 t~ken along line 5-S o~ Figure 3, Now r~ferrin~ ~o the drawing~, ~her~ i~ shown in Fi~ure 1 an end closure, generally designated 10 ~or an easy opening con-tainer of the "partial-open" type. End clo~ure 10 may be circular and constructed oP ~teel~ aluminum, tin pla~e or o~her 8Ui'C-able xupturable material. As ~e~n, end closure 10 is formed with a 30generally planar cen~ral panel portion 12 which merges at its peri--```` ~ 036 S ~ ~
1 phery with annulsr counter~i~k wall 14~ The u~per ~nd portion of wall 14 merge~ with outwardly ~xtending curled flange 16 which may be interfolded with the end fla~ge of a container body (not shown) to form an ent seam (not sho~n).
Included ~n central panel 12 i8 a displaceable portion 18, which is defin~d by and included within score line 20. Dlsplaceable portlon 18 becomQ~ displacet from central panel 12 when score 20 i8 compl~tely ruptured. The length o~ score line 20 i8 de$ined by the inwardly curled terminal portlons 21 80 that upon rupture o~ the lo scorQ, the dlsplaceable portion i~ displaced only to this polnt ef-~ecti~ely inhlbiting tearlng beyond this point thus defining the partial-open portlon o thQ central panel which remai~ attach~d to the end closure. Wh~le the partl~ular embodiment o~ ~he invention illustra~ed ~how~ a displaceabl~ por~on on a partlal-open end or pu~pose~ o~ illu~tratlon, it ehould be understood that the concept i~ equally appllcable to a panel having a fully removable portion in which case the score line 20 would extend beyond the curling terminals 21 and the portion 18 would be lifted out o~ the central panel 12 and discarted as well a~ thosQ inst~nce~ wherein the score define~ sub~tantially all of the central pflnel 12 resulting in an end of the full-open type.
In order to rupture score 20 ~nd displace portlon 18, an opening tab 22 is provided. Opening tab 22 i~ attached to the displaceable por~ion 18 prox~mate the periphery o~ central panel 12 by a suitable securing me~ns such as rive~ 24 which may be integral with and ~ormed in displacQ~ble portion 18.
Opening tab 22 include~ a web portion 26, a handle portlon or pull ring 28 attached to web por~ion 26 ~nd a ~txess co~cen~rating nose portion 30 ~ormed in the web portion 26 ~nd oppositely diaposed ~rom pull ring 28. Opening 32 i8 provided in web portion `: iO365Zl 1 26 for the purpo~e of acce~ting tab rivet 24 for th~ attachment o openlng tab 22 to di~placeable portion 18. The ou~er edge portion of the displaceablQ protion may be provided wi~h a "moustache" ancillary score 56 having a curved central portlon 58 whiah paeses immediately behind the rivet and extends outwardly ~rom the curved por~ion and merges inwardly to curled terminal portions 60 and 62 re~pectively. In this manner the rivet, pull ring and moustache score 56 function to rupture the score line by mechanisms well knuwn in the art, ~or example as dQscribed in U.S. Patent 3,606,076 to Hanke issued September 20, 1971.
H~ndle port~on or pull ring 28, although shown in the drawings as being in the orm o~ a ring may have any sultsble shape or coniguration desired, such as rectangular, triangular, etc. In ~uch case, o course, the shape o~ the arcuate channel underlying the pull ring would be changed accordingly to accomplish the nesting relationship necessary or the ~ucce~sful practice of the invention. The handle or pull ring 28 of this lnvention has an angularly raised end 34 provlded to permi~
insertion of a ~mall prying tool 35 as se~n in Figure 3. Inwardly, angularly fl~ttened portion~, generally designated 36 and 38 of the pull ring 28 are provided having indentatlon~, respectively desi8nated 40 and 42 as most clearly seen in Figure~ 3 and 4, An arcuate channel 44, aE most clearly seen in Figures 2 and 3, is ormed in the central panel portion 12 unde~lying ~ub-stantially all of the pull ring 28 of the opening tab. This ch~nnel provides a nest-like se~t or the pull ring permit~ing it to n~t within the channel and permitting a subst~ntlal ~ortlon o~ the rlng to rest below the plane o~ the central panel as best seen in Figures 3 and 4, To hold the rin8 tab in this `"
~Q365Z~
1 position ~nd to ald in re8i8t~nce to di~plac~ment therefrom, bo~se~ or hold-down po8t8 46 and 48 ar~ ~o po~itioned that they l~e within pull ring 28 ad~acent elther side of the inner edge of the ralsed end 34 o~ the pull ring and proximate to the flattened portions 36 and 38, The s~des of the po8t8 ad~acent indentat~one 40 and 42 are substantlally flat with the upper portion~ extending into.the flattenad areae and enga8ing the indentation~ as best seen in Figure 4. Because of the nested rela~ionship of ~he pull rin8 28 in the arcuate channel 44, sub~tantially all o the pull rlng i8 extremely clo~e ~o the cen~ral panel e~cept the angularly raised end 34. ~8 8een in Figure 5, the space between thi~ upturned end and the cen~ral panel 12 is such ~hat the pu~l r~ng, e~en a~ the rai~ed end, cannot be readily grasped or lifted by the u~er or the purpose o permitting insertion o~ or gra~ping by th~ uRer's ~ingers.
To open the closure, it is first neces~ary to lit the pull ring by ln~ert~on of a 8mall pryi~g tool aA for example, a coin, key, scrQw drlver, knife, etc. ollowed by exertion of suitable force to di~eng~ge thQ po8t8 46 and 48 from the indentat~ons
Ea~y-open containers opened by means of a lift~ng force exerted on an openlng tab secured to the removable portion of the container end are well known 1~ the a~t. The most common form o s~ch container~ are the beer and beverage cans in which the removable portion defines 8 comparatively small opening through whic~ the content~ are di~pensed. In another form, the score llne i8 ~ormed to pesmit ~ubstantially c~mplete removal o~
the central panel. Thi~ orm of the container i9 generally termed "full-open" and is ~uitable for use in the packag~ng of solid-like or chunk-like products such as processed food~, pe~nuts, etc. In yet another type, the ~core line de~ines a removable portion that i~ comparat~vely laxger than the ~mall opening~ ~or dispensing beer and be~erage~ but is 8ub~antially Less tha~ in 3 the ull-open end~. This larger partial-ope~ end i3 desi~ned for ~ .
'.
~'.
.
"
~, 11)36S;~
1 liquids, particularly liquids such a~ automotiv~ products such as antifreeze or ot~er gna-llne additives~
Containers o the~e types have en~oyed considerable succe~s ln the marketplace, particularly bQcause o~ the eaey accass~bility to theix contents. However, whexe the contents are pot~ntlally dangerous or harmul, this easy-opQning featuxe in many ca~es ceases to be an advantage and becomes a disadvantage which limit~
c~mmercial acceptance ~8 con~umer safety considerat~ons beco~e lncressinglr signi~icant.
Cloaures used on containers or good~ potentially dangerous to young childxen e~p~cially ~hould be rela~i~ely di~icul~ o~
them to open~ At the same time, how~ver, they ~hould be ~u~ici-ently easy to open by individuals, or example, adult~ or whose use the goods arQ intended.
SUMMARY OF THE INVENTION
Thl8 invention i8 directed to closures, of the partial-open type for contalner for potent~ally dangerou~ products such as automotive product~, de~igned to pro~ide a child-resi~t~nt ~eature which is sufficiently difficult to open eo that it cannot be ~ormAlly opened by the average comparatively young child but can be opened without signific~nt diff~culty by th~ a~erage person having reasoning ability ater in~ertion o a small pr~ing tool.
In U.S. Patent 3,780,902 is~ued December 25, 1972 to Henry Sylve~ter Holc ~nd Burton Frank Pillnik and commonly a~signed herewitb, ~here is disclosed an improved end closure o the easy open typ~ compri~ing means on the central pan~l pos~ion or holdlng ~he opening tab sub~tantially flat against the central panel por-tion when lt bulge~ outwardly duQ to the ~nternal pres~ure of the containers, This construction ~8 imminently s~i~able $or con-` ~ 03 6 S ~ ~
1 tainer~ for beverage~ or beer preventing the openin~ tab,the ree end of which may bscGme lifted away fram the cen~ral portion during sterilization or other conditions cau~ng outward, bulging o the central panel portion, from being accidently opened. However, the handle portion thereof i9 adap~ed for ea~e of gra~ping by the user such as by in~ertion through the ring of a u~er's f$nger and.~he mean~ holding the tab a8ain~t the central panel portion are de~lgned to permit the pull ring to be disengaged from the holding means with relstive ea~e. Thus, lo whi~e suitable or prevent~ng opening o~ the tab when the central pan~l bulges outwardl~ due to ln~ernal pre~ure, ~uch nn end ClOBUr~ i8 not de~lgned to be child-resl~tant and do~s not sol~e the need ~or s~ch when potentially d~ngerou~ products are to be contsined.
In accordsnce with thi~ invention, a child-reslstant opening eature i8 provided, in an end clo~ure ha~ing a central panel portion, a displaceable portion d~fined by a score inc~uded ~n the central panel portion, and an opening tab attached to the displaceablQ portion proximat~ the periphery of the central panel portion wherein the pull rlng or handle of the opening tab i8 radially lnward from the point o attachment of the opening tab to the di~placeable portion, by the improv~men~ which com-prl~es a pull ring having an angularly rai~ed end; an arcuate channel in the central panel por~ion underlying the pull ring of the openin~ tab and means or releasably cngaging the pull ring to thereby hold it sub~tan~ially nQsted in 6aid arcuate channel, the angularly rai~ed end deinin~ a space between the een~xal p~nel portion thst i~ lneuficient ~o perm~t ready grasping by hand, More spec~fically, the improvement comprises an axcuate channel $n the central panel portion underlylng the pull 10365Z~
1 ring of the opening tab. The pull ring portion, having flattened lndent~tions and an angularly raised en~, i8 nested in ~he arcuate channel and held therein by bo~ses or hold-down posts on the cen~ral panel, disposed on the inside of the pull r~ng and engaging the flattened lndentations the~eln. The result i~ an opening tab held substantially flat against the central panel portion with a pull ring portion that i~ nested withln the centr~l panel portion, the angularly raised end deining a space between the ce~tral panel ~hat iB ~uficient to permit insertion o a ~mall prying tool but insu~ici~nt to be easily grasped or lited by the user'~ inger~.
The present inventlon will be described and under~tood more readily when consid~red with th~ embodiments o the accompanying drawings, in which:
Figure 1 i~ a top plan view of a container end clo~ure o~
this inventlon.
Figur¢ 2 i8 a bottom plan ~iew of a contalner end closure oP
this invention~
Flgure 3 ia an anlarged cross-sectional ~iew of the end of F~gure 1 taken along line 3~3, Flgure 4 i~ an en~rged partial sectional view of the end of Flgure 1 taken ~long line 4-4.
Flgure S i8 an enlarged partial sec~ional view of the end o~ Figure 1 t~ken along line 5-S o~ Figure 3, Now r~ferrin~ ~o the drawing~, ~her~ i~ shown in Fi~ure 1 an end closure, generally designated 10 ~or an easy opening con-tainer of the "partial-open" type. End clo~ure 10 may be circular and constructed oP ~teel~ aluminum, tin pla~e or o~her 8Ui'C-able xupturable material. As ~e~n, end closure 10 is formed with a 30generally planar cen~ral panel portion 12 which merges at its peri--```` ~ 036 S ~ ~
1 phery with annulsr counter~i~k wall 14~ The u~per ~nd portion of wall 14 merge~ with outwardly ~xtending curled flange 16 which may be interfolded with the end fla~ge of a container body (not shown) to form an ent seam (not sho~n).
Included ~n central panel 12 i8 a displaceable portion 18, which is defin~d by and included within score line 20. Dlsplaceable portlon 18 becomQ~ displacet from central panel 12 when score 20 i8 compl~tely ruptured. The length o~ score line 20 i8 de$ined by the inwardly curled terminal portlons 21 80 that upon rupture o~ the lo scorQ, the dlsplaceable portion i~ displaced only to this polnt ef-~ecti~ely inhlbiting tearlng beyond this point thus defining the partial-open portlon o thQ central panel which remai~ attach~d to the end closure. Wh~le the partl~ular embodiment o~ ~he invention illustra~ed ~how~ a displaceabl~ por~on on a partlal-open end or pu~pose~ o~ illu~tratlon, it ehould be understood that the concept i~ equally appllcable to a panel having a fully removable portion in which case the score line 20 would extend beyond the curling terminals 21 and the portion 18 would be lifted out o~ the central panel 12 and discarted as well a~ thosQ inst~nce~ wherein the score define~ sub~tantially all of the central pflnel 12 resulting in an end of the full-open type.
In order to rupture score 20 ~nd displace portlon 18, an opening tab 22 is provided. Opening tab 22 i~ attached to the displaceable por~ion 18 prox~mate the periphery o~ central panel 12 by a suitable securing me~ns such as rive~ 24 which may be integral with and ~ormed in displacQ~ble portion 18.
Opening tab 22 include~ a web portion 26, a handle portlon or pull ring 28 attached to web por~ion 26 ~nd a ~txess co~cen~rating nose portion 30 ~ormed in the web portion 26 ~nd oppositely diaposed ~rom pull ring 28. Opening 32 i8 provided in web portion `: iO365Zl 1 26 for the purpo~e of acce~ting tab rivet 24 for th~ attachment o openlng tab 22 to di~placeable portion 18. The ou~er edge portion of the displaceablQ protion may be provided wi~h a "moustache" ancillary score 56 having a curved central portlon 58 whiah paeses immediately behind the rivet and extends outwardly ~rom the curved por~ion and merges inwardly to curled terminal portions 60 and 62 re~pectively. In this manner the rivet, pull ring and moustache score 56 function to rupture the score line by mechanisms well knuwn in the art, ~or example as dQscribed in U.S. Patent 3,606,076 to Hanke issued September 20, 1971.
H~ndle port~on or pull ring 28, although shown in the drawings as being in the orm o~ a ring may have any sultsble shape or coniguration desired, such as rectangular, triangular, etc. In ~uch case, o course, the shape o~ the arcuate channel underlying the pull ring would be changed accordingly to accomplish the nesting relationship necessary or the ~ucce~sful practice of the invention. The handle or pull ring 28 of this lnvention has an angularly raised end 34 provlded to permi~
insertion of a ~mall prying tool 35 as se~n in Figure 3. Inwardly, angularly fl~ttened portion~, generally designated 36 and 38 of the pull ring 28 are provided having indentatlon~, respectively desi8nated 40 and 42 as most clearly seen in Figure~ 3 and 4, An arcuate channel 44, aE most clearly seen in Figures 2 and 3, is ormed in the central panel portion 12 unde~lying ~ub-stantially all of the pull ring 28 of the opening tab. This ch~nnel provides a nest-like se~t or the pull ring permit~ing it to n~t within the channel and permitting a subst~ntlal ~ortlon o~ the rlng to rest below the plane o~ the central panel as best seen in Figures 3 and 4, To hold the rin8 tab in this `"
~Q365Z~
1 position ~nd to ald in re8i8t~nce to di~plac~ment therefrom, bo~se~ or hold-down po8t8 46 and 48 ar~ ~o po~itioned that they l~e within pull ring 28 ad~acent elther side of the inner edge of the ralsed end 34 o~ the pull ring and proximate to the flattened portions 36 and 38, The s~des of the po8t8 ad~acent indentat~one 40 and 42 are substantlally flat with the upper portion~ extending into.the flattenad areae and enga8ing the indentation~ as best seen in Figure 4. Because of the nested rela~ionship of ~he pull rin8 28 in the arcuate channel 44, sub~tantially all o the pull rlng i8 extremely clo~e ~o the cen~ral panel e~cept the angularly raised end 34. ~8 8een in Figure 5, the space between thi~ upturned end and the cen~ral panel 12 is such ~hat the pu~l r~ng, e~en a~ the rai~ed end, cannot be readily grasped or lifted by the u~er or the purpose o permitting insertion o~ or gra~ping by th~ uRer's ~ingers.
To open the closure, it is first neces~ary to lit the pull ring by ln~ert~on of a 8mall pryi~g tool aA for example, a coin, key, scrQw drlver, knife, etc. ollowed by exertion of suitable force to di~eng~ge thQ po8t8 46 and 48 from the indentat~ons
2~ 36 and 38, ater which the pull r~ng may be ll~ted in the usual ma~ner wlth ini~ial rupture o~ the mous~ach~ ancillary score 56 by the noae 30 of the opening tab 22, after whiah the opening ~orce 1~ applied to the prim~ry score 20 ta open the container closurQ.
The po~t~ 46 a~d 48 may b~ ormed in ~h~ cen~ral p~nel by suitable d~mple forming dies simultaneously w~th ~hs ~ormation o rivet 24 and flattened a~ter assembly of tab 22 in the ar~a~ o~ 36 a~d 38. The arcuate ch~nnel i8 prefQrabl~
conigurRd to coincide structurally with the configusation o tho pull ring and i9 preferably formed after forming o the posts and before a88~!Dibly 0~ the tab 22.
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103~5;~
1 The end closure of thi~ invention has been ound to be capable of wi~hstanding a~use and i~ satisfactory for meeting F,D.A. TeBting Procedures for Special Packaging ae deined in Section 2(4) of the Polson Prevention Packaging Act R 1970, Sections 295.10 and 295.3 as published in ~he Federal Regi~ter, Vol, 36, No, 225, November 20, 197~, a result tha~ i~ partlcularly significant sincè similar construcitons but without the arcuate channel and hold-down posts have not been found to be satis~actory.
In r~present~tl~e tests, the C10BUXe8 of this invention have ~uccess~ully reHisted ~he attempts o~ 100% of the child~en tested to open the closure w~thout demon~tra~ion a~ to the proper mRans or opening and re~isted attempts by 99,$% o the children ater demonstr~tion o ~hc open~n~ ~chnique. ~n the Adult phase o the testlng, the closure was ~uccessully opened by 97~ o those tes~Qd.
The closures are particularly suitsble or use on container~
for potentially dangerous products such as gas-line antifreeze, antirust, sealer~ and lubricants for automoti~e u3e, the chlld-resistant feature thereof being a significant development in the container lndustry.
It i~ belie~ed that the foregoing general and detailed descriptlons are explanatory of the present in~ention and it will be apparent th~t change~ and modlfication~ may be made : wlthout depa~ting from the spirit and scope o~ the in~ention as d6~ned by the app~nded claims.
The po~t~ 46 a~d 48 may b~ ormed in ~h~ cen~ral p~nel by suitable d~mple forming dies simultaneously w~th ~hs ~ormation o rivet 24 and flattened a~ter assembly of tab 22 in the ar~a~ o~ 36 a~d 38. The arcuate ch~nnel i8 prefQrabl~
conigurRd to coincide structurally with the configusation o tho pull ring and i9 preferably formed after forming o the posts and before a88~!Dibly 0~ the tab 22.
--7-- .
103~5;~
1 The end closure of thi~ invention has been ound to be capable of wi~hstanding a~use and i~ satisfactory for meeting F,D.A. TeBting Procedures for Special Packaging ae deined in Section 2(4) of the Polson Prevention Packaging Act R 1970, Sections 295.10 and 295.3 as published in ~he Federal Regi~ter, Vol, 36, No, 225, November 20, 197~, a result tha~ i~ partlcularly significant sincè similar construcitons but without the arcuate channel and hold-down posts have not been found to be satis~actory.
In r~present~tl~e tests, the C10BUXe8 of this invention have ~uccess~ully reHisted ~he attempts o~ 100% of the child~en tested to open the closure w~thout demon~tra~ion a~ to the proper mRans or opening and re~isted attempts by 99,$% o the children ater demonstr~tion o ~hc open~n~ ~chnique. ~n the Adult phase o the testlng, the closure was ~uccessully opened by 97~ o those tes~Qd.
The closures are particularly suitsble or use on container~
for potentially dangerous products such as gas-line antifreeze, antirust, sealer~ and lubricants for automoti~e u3e, the chlld-resistant feature thereof being a significant development in the container lndustry.
It i~ belie~ed that the foregoing general and detailed descriptlons are explanatory of the present in~ention and it will be apparent th~t change~ and modlfication~ may be made : wlthout depa~ting from the spirit and scope o~ the in~ention as d6~ned by the app~nded claims.
Claims (12)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In an end closure for a container having a central panel portion, a displaceable portion defined by a score line included in said central panel portion, and an opening tab including a pull ring attached to the displaceable portion at a point proximate the periphery of the central panel portion with the pull ring of the opening tab radially inward from the point of attachment, the improvement which comprises an arcuate channel formed in the central panel portion underlying the pull ring of the opening tab, the channel being configured to coincide with the pull ring and substantially nesting the pull ring therein, and means for releasably engaging the pull ring to maintain and resist movement of the pull ring from said substantially nested position.
2. An end closure as defined in claim 1 wherein the means for releasably engaging the pull ring of the opening tab comprises posts on said central panel portion adjacent the inside of the pull ring.
3. An end closure as defined in claim 2 wherein said pull ring comprises flattened angular indentations engaged by the posts.
4. An end closure as defined in claim 3 in which said posts are raised above the plane of the central panel portion.
5. An end closure as defined in claim 1 in which said arcuate channel extends beneath substantially the entire pull ring portion of the opening tab.
6. An end closure as defined in claim 1 in which said pull ring has an angular raised end portion.
7. An end closure as defined in claim 6 in which the angular raised end portion of the pull ring defines a space between the central panel portion that is insufficient to permit grasping or lifting by hand.
8. An end closure as defined in claim 6 in which ?e angular raised end portion of the pull ring defines a space between the central panel portion that permits insertion of a prying tool.
9. An end closure as defined in claim 1 in which said closure is metallic.
10. In a metallic end closure for a container having a central panel portion, a displaceable portion defined by a score line included in said central panel portion and an opening tab including a pull ring attached to the displaceable portion at a point proximate the periphery of the central panel portion with the pull ring of the opening tab radially inward from the point of attachment, the improvement which comprises a child-resistant opening mechanism comprising a pull ring, having flattened indentations and an angular raised end portion, substantially nested in an arcuate channel in the central panel portion underlying the pull ring and raised posts releasably engaging the indentations of said pull ring to maintain the pull ring in said nested position and to resist movement therefrom, the angular raised end of said pull ring defining a space between the central panel portion that is sufficient to permit insertion of a prying tool but is insufficient to readily permit lifting of the pull ring by hand.
11. An end closure as defined in claim 10 in which said displaceable portion remains attached to said central panel portion after opening.
12. An end closure as defined in claim 10 in which the displaceable portion is removable from said central panel portion after opening.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US499620A US3929252A (en) | 1974-08-22 | 1974-08-22 | Child-resistant closure for metal container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1036521A true CA1036521A (en) | 1978-08-15 |
Family
ID=23986001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA229,280A Expired CA1036521A (en) | 1974-08-22 | 1975-06-13 | Child-resistant closure for metal containers |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3929252A (en) |
| JP (1) | JPS5526268Y2 (en) |
| CA (1) | CA1036521A (en) |
| IT (1) | IT1041281B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4014455A (en) * | 1976-06-21 | 1977-03-29 | American Can Company | Accurate flow control container means |
| US4096967A (en) * | 1977-06-06 | 1978-06-27 | The Stolle Corporation | Ecological easy-open can end |
| US4130074A (en) * | 1977-12-29 | 1978-12-19 | Reynolds Metals Company | Tab system |
| JPS5528391U (en) * | 1978-08-16 | 1980-02-23 | ||
| US4417668A (en) * | 1981-09-03 | 1983-11-29 | Stolle Research And Development Corporation | Easy open can end with pull tab having retained tear strip with stress relief means |
| JPH0740755Y2 (en) * | 1987-08-28 | 1995-09-20 | 株式会社クボタ | Gearbox for walk-behind work machine |
| SE8902080L (en) * | 1989-06-09 | 1990-12-10 | Akerlund & Rausing Ab | BEHAALLAREFOERSLUTARE |
| GB9321118D0 (en) * | 1993-10-13 | 1993-12-01 | Metal Box Plc | Closure |
| US6050440A (en) * | 1996-01-05 | 2000-04-18 | Aluminum Company Of America | Easy open container end, method of manufacture, and tooling |
| USD382481S (en) * | 1996-01-05 | 1997-08-19 | Aluminum Company Of America | Easy open container end |
| USD402555S (en) | 1996-12-20 | 1998-12-15 | Aluminum Company Of America | Easy-open container end |
| US5927535A (en) * | 1998-02-26 | 1999-07-27 | Top Seal Corporation | Tablet dispensing closure for containers |
| US20040195240A1 (en) * | 2002-01-29 | 2004-10-07 | Brandon Darrell Holmes | Raised beverage can top with holding clip and spacer |
| DE10319971A1 (en) * | 2003-01-13 | 2005-01-27 | Ball Packaging Europe Gmbh | Positional fixation of a grip tab with a blocking bead formed from the panel |
| US20060016815A1 (en) * | 2003-11-03 | 2006-01-26 | Hajo Rieck | Anti rotation bead |
| EP1882640B1 (en) * | 2006-07-24 | 2016-03-23 | Ardagh MP Group Netherlands B.V. | Tab for a closure and process for making such tab |
| US7922025B2 (en) * | 2006-09-19 | 2011-04-12 | Crown Packaging Company, L.P. | Easy open can end with high pressure venting |
| US7721906B2 (en) * | 2006-09-19 | 2010-05-25 | Crown Packaging Technology, Inc. | Easy open can end with high pressure venting |
| US8109405B2 (en) * | 2007-06-22 | 2012-02-07 | Stolle Machinery Company, Llc | Can end and rivet base scoreline therefor |
| US8646643B2 (en) | 2012-06-13 | 2014-02-11 | Rexam Beverage Can Company | Reliable opening beverage can end |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3780902A (en) * | 1972-04-17 | 1973-12-25 | American Can Co | Container end closure |
| US3744667A (en) * | 1972-05-08 | 1973-07-10 | Fraze Ermal C | Can end with retained tear strip |
-
1974
- 1974-08-22 US US499620A patent/US3929252A/en not_active Expired - Lifetime
-
1975
- 1975-06-13 CA CA229,280A patent/CA1036521A/en not_active Expired
- 1975-06-20 JP JP1975084800U patent/JPS5526268Y2/ja not_active Expired
- 1975-08-20 IT IT51008/75A patent/IT1041281B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5526268Y2 (en) | 1980-06-24 |
| US3929252A (en) | 1975-12-30 |
| JPS5127661U (en) | 1976-02-28 |
| IT1041281B (en) | 1980-01-10 |
| AU8145175A (en) | 1976-11-25 |
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