US20030121924A1 - Can shell and double-seamed can end - Google Patents

Can shell and double-seamed can end Download PDF

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Publication number
US20030121924A1
US20030121924A1 US10/361,245 US36124503A US2003121924A1 US 20030121924 A1 US20030121924 A1 US 20030121924A1 US 36124503 A US36124503 A US 36124503A US 2003121924 A1 US2003121924 A1 US 2003121924A1
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United States
Prior art keywords
wall
countersink
shell
chuckwall
junction
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
Application number
US10/361,245
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English (en)
Inventor
R. Stodd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Container Development Ltd
Original Assignee
Container Development Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26760159&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20030121924(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US09/898,802 external-priority patent/US6419110B1/en
Priority to US10/361,245 priority Critical patent/US20030121924A1/en
Application filed by Container Development Ltd filed Critical Container Development Ltd
Assigned to CONTAINER DEVELOPMENT, LTD. reassignment CONTAINER DEVELOPMENT, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STODD, R. PETER
Publication of US20030121924A1 publication Critical patent/US20030121924A1/en
Priority to US10/675,370 priority patent/US7341163B2/en
Priority to US10/936,834 priority patent/US7819275B2/en
Priority to US12/904,532 priority patent/US8313004B2/en
Priority to US13/682,260 priority patent/US8931660B2/en
Priority to US14/593,914 priority patent/US9371152B2/en
Priority to US15/098,363 priority patent/US9771177B2/en
Priority to US15/187,520 priority patent/US10246217B2/en
Priority to US15/677,576 priority patent/US10654614B2/en
Priority to US15/861,086 priority patent/US10843845B2/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/30—Folding the circumferential seam
    • B21D51/32—Folding the circumferential seam by rolling
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/42—Details of metal walls
    • B65D7/44—Reinforcing or strengthening parts or members

Definitions

  • This invention relates to the construction or forming of a sheet metal or aluminum can shell and can end having a peripheral rim or crown which is double-seamed to the upper edge portion of a sheet metal or aluminum can body.
  • a can end is formed from a drawn sheet metal can shell, for example, a shell produced by tooling as disclosed in U.S. Pat. No. 5,857,374 which issued to applicant.
  • the formed can shell includes a circular center panel which extends to a panel wall which extends to or also forms the inner wall of a reinforcing rib or countersink having a U-shaped cross-sectional configuration.
  • the countersink is connected by a frusto-conical chuckwall to an annular crown which is formed with a peripheral curl.
  • the center panel of the shell is commonly provided with an E-Z open tab, and after the can body is filled with a beverage, the peripherally curled crown of the shell is double-seamed to the upper end portion of the can body.
  • the can body When the can body is filled with a carbonated beverage or a beverage which must be pasturized at a high temperature, it is essential for the can end to have a substantial buckle strength to withstand the pressurized beverage, for example, a buckle strength of at least 90 psi.
  • a buckle strength Such resistance to “buckle” pressure and “rock” pressure is described in detail in U.S. Pat. No. 4,448,322, the disclosure of which is incorporated by reference.
  • the present invention is directed to an improved sheet metal shell and can end and a method of forming the can end which provides the desirable features and advantages mentioned above, including a significant reduction in the blank diameter for forming a can shell and a significant increase in strength/weight ratio of the resulting can end.
  • a can shell and can end formed in accordance with the invention not only increases the buckle strength of the can end but also minimizes the changes or modifications in the existing tooling for adding E-Z open tabs to the can shells and for double-seaming the can shells to the can bodies.
  • the can shell and can end are formed with an overall height between the crown and the countersink of less than 0.240 inch and preferably less than 0.230 inch, and the countersink has a generally cylindrical outer wall and an inner wall connected to a curved panel wall.
  • a generally frusto-conical chuckwall extends from the outer wall of the countersink to the inner wall of the crown and has an upper wall portion extending at an angle of at least 16° relative to the center axis of the shell, and preferably between 25° and 30°.
  • the countersink may have a generally flat bottom wall which connects with the countersink outer wall with a small radius substantially less than the radial width of the bottom wall, and the inside width of the countersink at its bottom is less than the radius of the panel wall.
  • a can shell and can end have some of the above structure and with the junction of a lower wall portion of the chuckwall and the outer countersink wall being substantially below the center panel.
  • the lower wall portion of the countersink extends at an angle less than the angle of the upper wall portion relative to the center axis and is connected to the upper wall portion of the countersink by a short generally vertical riser portion and sharp radii, forming a kick.
  • the countersink has a radius of curvature substantially smaller than the radius of curvature of the curved panel wall, and the inner width of the countersink at the bottom of the countersink is also less than the radius of the panel wall, and preferably less than 0.035 inch.
  • FIG. 1 is a vertical cross-section through a sheet metal can shell formed in accordance with the invention
  • FIG. 2 is an enlarged fragmentary section of the can shell in FIG. 1 and showing the configuration of one embodiment
  • FIG. 3 is a smaller fragmentary section of the can shell of FIG. 2 and showing the can shell becoming a can end with a double-seaming chuck and a first stage roller;
  • FIG. 4 is a fragmentary section similar to FIG. 3 and showing a double-seamed can end with the chuck and a second stage roller;
  • FIG. 5 is an enlarged fragmentary section of the double-seamed can end shown in FIG. 4 and with a fragment of the modified double-seaming chuck;
  • FIG. 6 is a section similar to FIG. 1 and showing a double-seamed can end formed in accordance with the invention
  • FIG. 7 is an enlarged fragmentary section similar to FIG. 2 and showing a can shell formed in accordance with a modification of the invention
  • FIG. 8 is an enlarged fragmentary section similar to FIG. 5 and showing the can shell of FIG. 7 double-seamed onto a can body;
  • FIG. 9 is an enlarged fragmentary section similar to FIG. 7 and showing a can shell formed in accordance with another modification of the invention.
  • FIG. 10 illustrates the stacking and nesting of can shells formed as shown in FIG. 9.
  • FIG. 11 is an enlarged fragmentary section of the chuckwall of the can shell shown in FIG. 9.
  • FIG. 1 illustrates a one-piece shell 10 which is formed from a substantially circular blank of sheet metal or aluminum, preferably having a thickness of about 0.0085 inch and a blank diameter of about 2.705 inches.
  • the shell 10 has a center axis 11 and includes a slightly crowned center panel 12 with an annular portion 14 extending to a curved panel wall 16 .
  • the center panel wall portion 14 and panel wall 16 may be formed by a series of blended curved walls having radii wherein R 1 is 1.489 inch, R 2 is 0.321 inch, R 3 is 0.031 inch, and R 4 is 0.055 inch.
  • the curved panel wall 16 has a bottom inner diameter D 1 of about 1.855 inch.
  • the curved panel wall 16 with the radius R 4 extends from an inner wall 17 of a reinforcing rib or countersink 18 having a U-shaped cross-sectional configuration and including a flat annular bottom wall 22 and a generally cylindrical outer wall 24 having an inner diameter D 2 , for example, of about 1.957 inches.
  • the flat bottom wall 22 of the countersink 18 is connected to the inner panel wall 16 and the outer countersink wall 24 by curved corner walls 26 each having an inner radius R 5 of about 0.010 inch.
  • the radial width W of the flat bottom wall 22 is preferably about 0.022 inch so that the inner bottom width W 1 of the countersink 18 is about 0.042 inch.
  • the outer wall 24 of the countersink 18 connects with a generally frusto-conical chuckwall 32 by a curved wall 34 having a radius R 6 of about 0.054 inch.
  • the chuckwall 32 extends at an angle A 1 of at least 16° with respect to the center axis 11 or a vertical reference line 36 which is parallel to the center axis 11 of the shell.
  • the angle A 1 is between 25° and 30° and on the order of 29°.
  • the upper end of the chuckwall 32 connects with the bottom of a curved inner wall 38 of a rounded crown 42 having a curled outer wall 44 .
  • the inner wall 38 of the crown 42 has a radius R 7 of about 0.070 inch, the inner diameter D 3 at the bottom of the curved inner wall 38 is about 2.039 inch, and the outer diameter D 4 of the curled outer wall 44 is about 2.340 inches.
  • the height C of the curled outer wall 44 is within the range of 0.075 inch and 0.095 inch and is preferably about 0.079 inch.
  • the depth D from the bottom of the outer curled wall 44 or the junction 46 of the chuckwall 32 and the inner crown wall 38 to the inner surface of the countersink bottom wall 22 is within the range between 0.108 inch and 0.148 inch, and preferably about 0.126 inch.
  • the junction 47 or the center point for the radius R 6 has a depth G of about 0.079 from the junction 0.46 or bottom of the curled outer wall 44 of the crown 42 .
  • FIG. 3 shows the crown 42 of the shell 10 being double-seamed onto an upper peripheral end portion 48 of a sheet metal or aluminum can body 50 .
  • the double-seaming operation is performed between a rotating double-seaming circular chuck 55 which engages the shell 10 and has an outer surface 58 which may be slightly tapered between an angle of 0° and 10° with respect to the center axis of the chuck 55 and the common center axis 11 of the shell 10 .
  • the surface 58 has a slight taper of about 40 and is engaged by the inner wall 38 of the crown 42 in response to radially inward movement of a first stage double-seaming roller 60 while the can body 50 and its contents and the shell 10 are rotating or spinning with the chuck 55 .
  • the chuck 55 also has a frusto-conical surface 62 which mates with and engages the frusto-conical chuckwall 32 of the shell 10 , and a downwardly projecting annular lip portion 64 of the chuck 55 extends into the countersink 18 and has a bottom surface 66 (FIG. 5) and a cylindrical outer surface 68 which engage the bottom wall 22 and the outer wall 24 of the countersink 18 , respectively.
  • FIGS. 4 & 5 illustrates the completion of the double-seaming operation to form a double-seamed crown 70 between the rotating chuck 55 and a second stage double-seaming roller 72 which also moves radially inwardly while the chuck 55 , shell 10 and can body 50 are spinning to convert the shell 10 into a can end 75 which is positively attached and sealed to the upper end portion 48 of the can body 50 .
  • the double-seamed rim or crown 70 has an inner wall 74 which is formed from the inner wall 38 of the shell crown 42 and also has an outer wall 76 formed from the shell crown 42 including the outer curled wall 44 .
  • the double-seamed crown 70 has a height H 2 within the range between 0.090 inch and 0.110 inch and preferably about 0.100 inch.
  • the can end 75 has an overall height H 1 between the top of the crown 70 and the bottom of the countersink 18 within the range of 0.170 inch and 0.240 inch, and preferably about 0.235 inch. Since the can end 75 has the same cross-sectional configuration as the shell 10 with the exception of the double-seamed crown 70 , the same common reference numbers are used in FIGS. 4 - 6 for the common structure.
  • the center portion of the center panel 12 defines a plane 80 which substantially intersects the junction 46 of the chuckwall 32 with the inner wall 74 of the double-seamed crown 70 .
  • the E-Z open tab has been omitted from FIG. 6 for purposes of clarity and simplification and since the E-Z open tab forms no part of the present invention.
  • FIGS. 7 & 8 show another embodiment or modification of the invention including a can shell (FIG. 7) and a double-seamed can end (FIG. 8).
  • a can shell 10 ′ has a center axis which is the same as the axis 11 and includes a circular center panel 12 ′ connected to a peripheral curved panel wall 16 ′ which connects with an inclined inner wall 17 ′ of a countersink 18 ′ having a U-shaped cross-sectional configuration.
  • the countersink has a generally cylindrical outer wall 24 ′ which extends at an angle less than 10° and connects with a chuckwall having a frusto-conical upper wall portion 32 ′ and a slightly curved lower wall portion 34 ′.
  • the wall portions 32 ′ and 34 ′ are connected by a kick or generally vertical short riser portion 35 ′ having relatively sharp inside and outside radii, for example, on the order of 0.020 inch.
  • the upper chuckwall portion 32 ′ is connected by a curved wall 37 ′ to the inner curved wall 38 ′ of a crown 42 ′ having a curved outer wall 44 ′.
  • the inner wall 38 ′ of the crown 42 ′ connects with the upper chuckwall portion 32 ′ at a junction 46 ′, and the outer wall 24 ′ of the countersink 18 ′ connects with the lower chuckwall portion 34 ′ at a junction 47 ′.
  • the vertical height G 1 from the bottom of the countersink 18 ′ to the kick or riser portion 35 ′ is about 0.086.
  • the radius R 10 is about 0.051 inch, and the lower wall portion 34 ′ extends at an angle A 3 of about 15°.
  • the countersink 18 ′ has a radius R 9 of about 0.009 to 0.011 inch. Other approximate dimensions and angles for the shell 10 ′ shown in FIG.
  • the particular cross-sectional configuration of the can shell 10 ′ has been found to provide performance results superior to the performance results provided by the can shell 10 .
  • the details of the configuration of the can shell 10 ′ include a chuckwall upper wall portion 32 ′ having an angle A 2 relative to the center axis of at least 16° and preferably within the range of 25° to 30°.
  • the lower wall portion 34 ′ of the chuckwall forms an angle A 3 which is about 15°.
  • the inner wall 38 ′ of the crown 42 forms an angle A 4 preferably within the range of 5° to 30° and preferably about 16°.
  • the inner wall 17 ′ of the countersink 18 ′ forms an angle A 6 which is greater than 10° and about 13°.
  • the width W 1 of the countersink at the bottom between the inner wall 17 ′ and the outer wall 24 ′ is less than 0.040 inch and preferably about 0.024 inch.
  • the radius R 8 of the curved inner panel wall 16 ′ is substantially greater than the width W 1 of the countersink 18 ′ and is about 0.049 inch.
  • the crown 42 ′ of the shell 10 ′ has a height C 1 within the range of 0.075 inch to 0.095 inch and preferably about 0.082 inch and a height C 2 within the range of 0.120 inch and 0.170 inch and preferably about 0.153 inch.
  • the overall diameter D 8 of the shell 10 ′ is about 2.337 inch, and the diameter D 7 to the junction 46 ′ is about 2.036 inch.
  • the inner bottom diameter D 6 of the outer countersink wall 24 ′ is about 1.910 inch, and the difference W 2 between D 7 and D 6 is greater than the countersink width W 1 , or about 0.063 inch.
  • the diameter D 9 for the center of the radius R 8 is about 1.731 inch.
  • the diameters D 6 -D 9 vary proportionately.
  • the height H 5 of the center panel 12 ′ above the bottom of the countersink 18 ′ is within the range of 0.070 inch and 0.110 inch and preferably about 0.078 inch.
  • the height H 6 of the shell 10 ′ between the top of the center panel 12 ′ and the top of the crown 42 ′ is within the range of 0.125 inch and 0.185 inch, and preferably about 0.149 inch.
  • the shell 10 ′ is double-seamed with the upper end portion 48 ′ of a formed can body 50 ′ using tooling substantially the same as described above in connection with FIGS. 3 - 5 to form a can end 75 ′.
  • a seamer chuck (not shown), similar to the chuck 55 , includes a lower portion similar to the portion 64 which projects into the countersink 18 ′ and has surfaces corresponding to the surfaces 58 , 62 and 68 of the seamer chuck 55 for engaging the outer countersink wall 24 ′, the chuckwall portion 32 ′, and for forming the inner wall 74 ′ of the double-seamed crown 70 ′.
  • a seamer chuck similar to the chuck 55 , includes a lower portion similar to the portion 64 which projects into the countersink 18 ′ and has surfaces corresponding to the surfaces 58 , 62 and 68 of the seamer chuck 55 for engaging the outer countersink wall 24 ′, the chuckwall portion 32 ′, and for forming the inner
  • the inner wall 74 ′ of the double-seamed crown 70 ′ extends at a slight angle A 5 of about 4°, and the overall height H 3 of the can end 75 ′ is less than 0.240 inch and preferably about 0.235 inch.
  • the height H 4 of the double-seamed crown 70 ′ is on the order of 0.100 inch and the height H 7 from the top of the crown 70 ′ to the top of the center panel 12 ′ is greater than the center panel height H 5 , preferably about 0.148 inch.
  • FIGS. 9 - 11 show another embodiment or modification of the invention including a can shell (FIG. 9) wherein the structural components corresponding to the components described above in connection with FIGS. 7 & 8 have the same reference numbers but with the addition of double prime marks.
  • a can shell 10 ′′ has a center axis which is the same as the axis 11 and includes a circular center panel 12 ′′ connected to a peripheral curved panel wall 16 ′′ which connects with an inclined inner wall 17 ′′ of a countersink 18 ′′ having a U-shaped cross-sectional configuration.
  • the countersink has a generally cylindrical outer wall 24 ′′ which extends at an angle less than 10° and connects with a chuckwall having a frusto-conical upper wall portion 32 ′′ and slightly curved lower wall portion 34 ′′.
  • the wall portions 32 ′′ and 34 ′′ are connected by a kick or generally vertical or generally cylindrical short riser wall portion 35 ′′ having relatively sharp inside and outside radii, for example, on the order of 0.020 inch.
  • the upper chuckwall portion 32 ′′ is connected to an inner wall 38 ′′ of a crown 42 ′′ having a curved outer wall 44 ′′.
  • the riser wall portion 35 ′′ has a coined outer surface 112 which results in the wall portion 35 ′′ having a thickness sightly less than the wall thickness of the adjacent wall portions 32 ′′ and 34 ′′.
  • the inner wall 38 ′′ of the crown 42 ′′ connects with the upper chuckwall portion 32 ′′ at a junction 46 ′′, and the outer wall 24 ′′ of the countersink 18 ′′ connects with the lower chuckwall portion 34 ′′ at a junction 47 ′′.
  • the vertical height G 1 from the bottom of the countersink 18 ′′ to the kick or riser wall portion 35 ′′ is about 0.099.
  • the radius R 10 is about 0.100 inch, and the lower wall portion 34 ′′ extends at an angle A 3 of about 15°.
  • the countersink 18 ′′ has an inner radius R 9 of about 0.021 inch and an outer radius R 11 of about 0.016 inch. Other approximate dimensions and angles for the shell 10 ′′ shown in FIG.
  • the particular cross-sectional configuration of the can shell 10 ′′ has been found to provide performance results somewhat superior to the performance results provided by the can shell 10 ′. Accordingly, the details of the configuration of the can shell 10 ′′ include a chuckwall upper wall portion 32 ′′ having an angle A 2 relative to the center axis of at least 16° and preferably within the range of 25° to 30°.
  • the lower wall portion 34 ′′ of the chuckwall forms an angle A 3 which is about 15°.
  • the inner wall 17 ′′ of the countersink 18 ′′ forms and angle A 6 which is less than 10° and about 8°.
  • the width W 1 of the countersink at the bottom between the inner wall 17 ′′ and the outer wall 24 ′′ is less than 0.040 inch and preferably about 0.030 inch.
  • the radius R 8 of the curved inner panel wall 16 ′′ is substantially greater than the width W 1 of the countersink 18 ′′ and is about 0.051 inch.
  • the crown 42 ′′ of the shell 10 ′′ has a height C 3 from the bottom of the countersink 18 ′′ of about 0.249 inch.
  • the overall diameter D 8 of the shell 10 ′′ is about 2.336 inch.
  • the inner bottom diameter D 6 of the outer countersink wall 24 ′′ is about 1.900 inch, and the difference in diameter W 2 is greater than the countersink width W 1 , or about 0.047 inch.
  • the diameter D 9 for the center of the radius R 8 is about 1.722 inch. It is understood that if a different diameter shell is desired, the diameters D 6 , D 8 & D 9 vary proportionately.
  • the height H 5 of the center panel 12 ′′ above the bottom of the countersink 18 ′′ is preferably about 0.081 inch.
  • the curved panel wall 16 ′′ has a coined portion 115 with a thickness less than the thickness of the adjacent portions of the panel wall 16 ′′.
  • the shell 10 or 10 ′ or 10 ′′ also minimizes the modifications required in the tooling existing in the field for forming the double-seamed crown 70 or 70 ′ or double-seaming the crown 42 ′′. That is, the only required modification in the tooling for forming the double-seamed crown is the replacement of a conventional or standard double-seaming chuck with a new chuck having the frusto-conical mating surface 62 and the generally cylindrical surface 68 on the bottom portion 64 which extends into the countersink and engages the outer countersink wall.
  • Conventional double-seaming chucks commonly have the slightly tapered surface 58 which extends at an angle of about 4° with respect to the center axis of the double-seaming chuck.
  • the short generally vertical riser portion 35 ′′ of the shell 10 ′′ provides for stacking the shells 10 ′′ in closely nested relation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Connection Of Plates (AREA)
  • Vehicle Body Suspensions (AREA)
US10/361,245 2001-07-03 2003-02-10 Can shell and double-seamed can end Abandoned US20030121924A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US10/361,245 US20030121924A1 (en) 2001-07-03 2003-02-10 Can shell and double-seamed can end
US10/675,370 US7341163B2 (en) 2001-07-03 2003-09-30 Can shell and double-seamed can end
US10/936,834 US7819275B2 (en) 2001-07-03 2004-09-09 Can shell and double-seamed can end
US12/904,532 US8313004B2 (en) 2001-07-03 2010-10-14 Can shell and double-seamed can end
US13/682,260 US8931660B2 (en) 2001-07-03 2012-11-20 Can shell and double-seamed can end
US14/593,914 US9371152B2 (en) 2001-07-03 2015-01-09 Can shell and double-seamed can end
US15/098,363 US9771177B2 (en) 2001-07-03 2016-04-14 Can shell and double-seamed can end closure
US15/187,520 US10246217B2 (en) 2001-07-03 2016-06-20 Can shell and double-seamed can end
US15/677,576 US10654614B2 (en) 2001-07-03 2017-08-15 Can shell and double-seamed can end closure
US15/861,086 US10843845B2 (en) 2001-07-03 2018-01-03 Can shell and double-seamed can end

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/898,802 US6419110B1 (en) 2001-07-03 2001-07-03 Double-seamed can end and method for forming
US10/078,152 US6516968B2 (en) 2001-07-03 2002-02-19 Can shell and double-seamed can end
US10/361,245 US20030121924A1 (en) 2001-07-03 2003-02-10 Can shell and double-seamed can end

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US09/898,802 Continuation-In-Part US6419110B1 (en) 2001-07-03 2001-07-03 Double-seamed can end and method for forming
US10/078,152 Continuation-In-Part US6516968B2 (en) 2001-07-03 2002-02-19 Can shell and double-seamed can end

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US10/675,370 Continuation-In-Part US7341163B2 (en) 2001-07-03 2003-09-30 Can shell and double-seamed can end
US10/936,834 Continuation-In-Part US7819275B2 (en) 2001-07-03 2004-09-09 Can shell and double-seamed can end

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Publication Number Publication Date
US20030121924A1 true US20030121924A1 (en) 2003-07-03

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US10/361,245 Abandoned US20030121924A1 (en) 2001-07-03 2003-02-10 Can shell and double-seamed can end

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US (1) US20030121924A1 (xx)
EP (1) EP1434894B1 (xx)
JP (1) JP4647207B2 (xx)
CN (1) CN1321862C (xx)
AU (1) AU2002354810B2 (xx)
BR (1) BR0211033B1 (xx)
CA (1) CA2451453C (xx)
IL (1) IL159505A0 (xx)
MX (1) MXPA03012003A (xx)
NZ (1) NZ530353A (xx)
RU (1) RU2323796C2 (xx)
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US8313004B2 (en) 2001-07-03 2012-11-20 Ball Corporation Can shell and double-seamed can end
US8727169B2 (en) 2010-11-18 2014-05-20 Ball Corporation Metallic beverage can end closure with offset countersink
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US8973780B2 (en) 2007-08-10 2015-03-10 Rexam Beverage Can Company Can end with reinforcing bead
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US9566634B2 (en) 2010-06-07 2017-02-14 Rexam Beverage Can Company Can end produced from downgauged blank
US9821928B2 (en) 2012-05-14 2017-11-21 Rexam Beverage Can Company Can end
US10479550B2 (en) 2012-03-26 2019-11-19 Kraft Foods R & D, Inc. Packaging and method of opening
US10507970B2 (en) 2013-03-07 2019-12-17 Mondelez Uk R&D Limited Confectionery packaging and method of opening
US10513388B2 (en) 2013-03-07 2019-12-24 Mondelez Uk R&D Limited Packaging and method of opening
AU2018419293B2 (en) * 2018-04-16 2022-07-07 Suzhou Slac Precision Equipment Co., Ltd A Pressure Resistant Basic Shell, Easy Open End and Can with Easy Open End

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US10246217B2 (en) 2001-07-03 2019-04-02 Ball Corporation Can shell and double-seamed can end
US8313004B2 (en) 2001-07-03 2012-11-20 Ball Corporation Can shell and double-seamed can end
US8931660B2 (en) 2001-07-03 2015-01-13 Ball Corporation Can shell and double-seamed can end
US10843845B2 (en) 2001-07-03 2020-11-24 Ball Corporation Can shell and double-seamed can end
US9371152B2 (en) 2001-07-03 2016-06-21 Ball Corporation Can shell and double-seamed can end
US7938290B2 (en) * 2004-09-27 2011-05-10 Ball Corporation Container end closure having improved chuck wall with strengthening bead and countersink
US8235244B2 (en) 2004-09-27 2012-08-07 Ball Corporation Container end closure with arcuate shaped chuck wall
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US20100059517A1 (en) * 2006-05-27 2010-03-11 Suzhou Slac Precision Equipment, Inc. Internal Gas Pressure Resistant Metal Pop-Top Cover and Method of Making
US8875936B2 (en) 2007-04-20 2014-11-04 Rexam Beverage Can Company Can end with negatively angled wall
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AU2018419293B2 (en) * 2018-04-16 2022-07-07 Suzhou Slac Precision Equipment Co., Ltd A Pressure Resistant Basic Shell, Easy Open End and Can with Easy Open End

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WO2003004716A3 (en) 2004-04-29
JP2004533933A (ja) 2004-11-11
RU2323796C2 (ru) 2008-05-10
BR0211033A (pt) 2005-01-04
AU2002354810B2 (en) 2008-01-03
EP1434894A2 (en) 2004-07-07
CN1321862C (zh) 2007-06-20
CA2451453C (en) 2010-01-26
NZ530353A (en) 2006-03-31
IL159505A0 (en) 2004-06-01
CN1524049A (zh) 2004-08-25
JP4647207B2 (ja) 2011-03-09
EP1434894B1 (en) 2011-03-02
EP1434894A4 (en) 2009-04-29
BR0211033B1 (pt) 2013-04-16
MXPA03012003A (es) 2005-07-01
WO2003004716A2 (en) 2003-01-16
CA2451453A1 (en) 2003-01-16
RU2003137570A (ru) 2005-05-27

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