US3441170A - Coined bead for improved fill characteristics - Google Patents
Coined bead for improved fill characteristics Download PDFInfo
- Publication number
- US3441170A US3441170A US620497A US3441170DA US3441170A US 3441170 A US3441170 A US 3441170A US 620497 A US620497 A US 620497A US 3441170D A US3441170D A US 3441170DA US 3441170 A US3441170 A US 3441170A
- Authority
- US
- United States
- Prior art keywords
- end panel
- bead
- end unit
- panel
- coined
- 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 - Lifetime
Links
Images
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)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Description
. Apl 'il 29, 1969 N. s. KHOURY 7 3,441,170.
COINED BEAD FOR IMPROVED FILL CHARACTERISTICS Filed March 5, 1967 INVENTOR NICK S. KHOU RY dim/W31, Wa Ci, ML M ATTORNEYS United States Patent Filed Mar. 3, 1967, Ser. No. 620,497 Int. Cl. B6541 17/20, 7/42 U.S. Cl. 220-54 12 Claims ABSTRACT OF THE DISCLOSURE The cooperation of an end unit with a container body and the fill characteristics of the container may be improved by providing the end unit with a bead coined or pressed therein generally surrounding the end panel thereof.
This invention relates in general to new and useful improvements in end units for cans and like containers, and more particularly to end units of the easy opening type.
The normal easy opening end unit has a tendency to buckle under pressure and this buckling, in turn, exerts a tensile force on the chuck wall of a magnitude to pull the chuck wall radially inwardly away from the body. In certain instances, the chuck wall is pulled away from the body sufficiently to break the seal between the end unit and the body. Another undesirable result is that this uncontrolled buckling will occur to the extent that the end unit has an unsightly appearance and the pull tab which is normally attached thereto unduly projects therefrom so as to interfere with stacking and packaging.
The buckling of the end panel under pressure is normally due to the existence of excess material resulting from the scoring of the end panel to define a tear panel or strip. In the past, the undesired buckling eifect of the excess metal has been greatly reduced or eliminated by providing in the end panel beads which absorb the excess metal. The beads, however, normally have a tendency to retain the planar condition of the end panel and prevents the controlled bulging of the end panel to provide for an increased capacity of the can.
In accordance with this invention, it is proposed to make no attempt to eliminate the excess metal in the end panel due to the forming of score lines therein, and at the same time to provide additional metal in a manner to extend the mechanical dome of the end panel and minimize the chuck wall distortion.
In accordance with this invention, the additional metal provided in the end panel results from the forming of a coined bead area surrounding the end panel with this coined bead area functioning as a hinge to limit the buckling or doming of the end unit to the end panel and thereby hold to a minimum the radial tensile forces applied to the chuck wall.
A further object of this invention is to provide a novel easy opening end unit for cans and like containers wherein the normal loose metal in the end panel resulting from the forming of score lines therein to define tear strips is utilized to an advantage to provide a mechanical dome by the provision of additional loose metal under controlled conditions by the forming of a coined bead surrounding the end panel.
With the above and other objects in view that will hereinafter appear, the nature of the invention will be more clearly understood by reference to the following detailed description, the appended claims and the several views illustrated in the accompanying drawings:
In the drawing:
FIGURE 1 is a plan view of a can of the easy opening type having an end unit formed in accordance with this invention.
FIGURE 2 is a bottom plan view of the end unit of FIGURE 1 prior to the application thereof to a can body.
FIGURE 3 is an enlarged fragmentary transverse sectional view taken along the line 33 of FIGURE 2 and shows the specific section of the outer portion of the end unit.
FIGURE 4 is an enlarged fragmentary vertical sectional view taken along the line 4-4 of FIGURE 1 and shows the domed configuration of the end unit as it exists as a part of a filled can.
Referring now to the drawing in detail, it will be seen that there is illustrated a can which is formed in accordance with this invention, the can being generally referred to by the numeral 10. The can 10 includes a conventional body 11 which has the lower end thereof closed in a conventional manner by an end unit (not shown). The upper end of the body 11 is closed by an end unit which is formed in accordance with this invention and is generally referred to by the numeral 12. The end unit 12 is secured to the body 11 by means of a conventional double seam 13 in the customary manner.
Referring to FIGURES 2 and 3 in particular, it will be seen that basically the end unit 12 is of a conventional construction and includes a central end panel 14, which is joined to the customary chuck wall 15 by means of a shock absorbing head 16. Radially outwardly of the chuck wall 15, the end unit 12 is provided with the customary curl 19 to facilitate the forming of the double seam 13.
The end unit 12, being of the easy opening type, has a readily removable tear portion 17 which is defined by a score line 18. The tear portion 17, which is formed in the end panel 14 and is removable therefrom by a tearing action, is provided at the starting end thereof with an integrally formed rivet 20 which is utilized to secure a pull tab 21 thereto. The end panel 14 is also provided with a pair of protected beads 22, there being one bead 22 on each side of the tear portion 17.
It is to be understood that the score line 18 is formed by a stamping with the metal being displaced as opposed to being removed. The displaced metal results in a looseness of the end panel 14. This looseness of the metal of the end panel 14 results in a buckling thereof under slight pressures. Unless this buckling is controlled, it is undesired and in the past attempts have been made to eliminate the looseness of the end panel by various methods including the formation of metal absorbing beads in the end panel.
In accordance with this invention, it is proposed to utilize the loose metal of the end panel 14 to effect a mechanical doming of the end panel in the filled can. Furthermore, the doming of the end panel which is possible with the loose metal resulting from the forming of the score line 18 is enhanced by the provision of additional loose metal in the end panel. A bead 23 is coined in the end unit 12 surrounding the end panel 14 and intermediate the end panel 14- and the shock absorbing bead 16. The coining operation is preferably formed from the underside of the end unit 12 whereby the thinning of the metal at the coined bead 23 is not apparent. The metal displaced in the forming of the coined bead 23 is primarily displaced radially inwardly into the end panel 14 to provide for a controlled looseness of the end panel 14 whereby a mechanical dome will result in the end unit when it becomes part of a closed container.
Referring now to FIGURE 4 in particular, it will be seen that the end panel 14 is domed so as to increase the capacity of the can 10. It is to be understood that this doming is uniform.
It is also to be noted that the domed end panel 14 is hinged relative to the remainder of the end unit 12 because the coined bead 23, due to the thinning of the metal in the formation thereof, functions as a hinge. This hinging of the domed end panel 14 minimizes the radial inwardly directed forces applied to the chuck wall 15 by pressure within the can on the end unit and eliminates the pulling away of the chuck wall from the body 11 which has occurred in other easy opening end units.
Although only a preferred embodiment of the invention has been specifically illustrated and described herein, it is to be understood that minor variations may be made in the end unit in general and the configuration of the coined bead in particular without departing from the spirit and scope of the invention, as defined by the appended claims.
I claim:
1. In an end unit for cans and like containers of the type including an end panel and a peripheral attaching portion; the improvement comprising an area of reduced thickness disposed intermediate said end panel and said attaching portion, said area of reduced thickness being of a material width as compared to a conventional weakening line type score.
2. The end unit of claim 1 wherein the material displaced in the forming of said area of reduced thickness has been absorbed in said end panel and said end panel has loose material facilitating the controlled doming of said end panel.
3. In an end unit for cans and like containers of the type including an end panel and a peripheral attaching portion; the improvement comprising an area of reduced thickness disposed intermediate said end panel and said attaching portion, the material disposed in the forming of said area of reduced thickness having been absorbed in said end panel and said end panel having loose material facilitating the controlled doming of said end panel, said end unit being of the easy opening type and said end panel having a tear portion defined therein by a score line, and material disposed in the forming of said score line supplementing said material disposed in the forming of said area of reduced thickness.
4. The end unit of claim 1 wherein said area of reduced thickness is in the form of a bead.
5. The end unit of claim 1 wherein said area of reduced thickness is in the form of a downwardly opening bead.
6. The end unit of claim 1 wherein said area of reduced thickness is in the form of a bead and the material displaced in the forming of said area of reduced thickness has been absorbed in said end panel and said end panel has loose material facilitating the controlled domin g of said end panel.
7. The end unit of claim 1 wherein said area of reduced thickness extends entirely about said end panel and forms a hinged connection between said end panel and said attaching portion.
8. The end unit of claim 1 wherein said area of reduced thickness is upwardly bowed and the material displaced in the thinning of said area being from the underside of said end unit.
9. The end unit of claim 1 wherein a shock absorbing bead surrounds said area of reduced thickness.
10. The end uriit of claim 1 wherein said end unit forms an end closure of a container having a product under pressure therein and said end panel is outwardly domed to provide a controlled increase in capacity of said container.
11. An end unit for a can adapted to be filled with a product under pressure, said end unit comprising a peripheral attaching portion attachable to one end of said can, a central panel portion coaxially disposed within said peripheral attaching portion, means integrally connecting said central panel portion with said peripheral attaching portion, a coined bead formed along the juncture of said connecting means and said central panel portion, said coined bead displacing material inwardly so that said central panel portion flexes relative to said connecting means and independently of said attaching portion when said end unit is attached to said can to form a dome and thereby to increase the capacity of said can.
12. An end unit for cans and like containers and wherein said end unit is of the type including a peripheral attaching portion and an end panel with said end panel having a removable panel portion defined by a score line; the improvement residing in said end unit being of a construction wherein said end panel has loose material faciliting the controlled doming of said end panel, said loose material being partially of a result of the forming of score line and partially due to controlled locallized thinning of said end unit.
References Cited UNITED STATES PATENTS 2,210,225 8/1940 Walensky 220-48 2,971,671 2/1961 Shakman 220-66 GEORGE T. HALL, Primary Examiner.
U.S. Cl. X.R. 220-66
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US62049767A | 1967-03-03 | 1967-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3441170A true US3441170A (en) | 1969-04-29 |
Family
ID=24486190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US620497A Expired - Lifetime US3441170A (en) | 1967-03-03 | 1967-03-03 | Coined bead for improved fill characteristics |
Country Status (6)
Country | Link |
---|---|
US (1) | US3441170A (en) |
AT (1) | AT286863B (en) |
DE (1) | DE1607845A1 (en) |
DK (1) | DK140368B (en) |
FR (1) | FR1558660A (en) |
GB (1) | GB1170402A (en) |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3774801A (en) * | 1971-02-22 | 1973-11-27 | American Can Co | Reinforced metal can end |
US3875884A (en) * | 1971-11-03 | 1975-04-08 | Nat Can Corp | Full open end and method of making |
US3979009A (en) * | 1975-03-21 | 1976-09-07 | Kaiser Aluminum & Chemical Corporation | Container bottom structure |
US4217843A (en) * | 1977-07-29 | 1980-08-19 | National Can Corporation | Method and apparatus for forming ends |
US4361246A (en) * | 1980-12-17 | 1982-11-30 | Alexander Nelson | Container construction |
EP0088968A1 (en) * | 1982-03-11 | 1983-09-21 | Ball Corporation | A method for further forming a metal closure and a metal container end |
EP0103074A2 (en) * | 1982-09-09 | 1984-03-21 | Ball Corporation | Increased strenght for metal closures through reversing curved segments |
US4448322A (en) * | 1978-12-08 | 1984-05-15 | National Can Corporation | Metal container end |
US4577774A (en) * | 1982-03-11 | 1986-03-25 | Ball Corporation | Buckle resistance for metal container closures |
US4606472A (en) * | 1984-02-14 | 1986-08-19 | Metal Box, P.L.C. | Reinforced can end |
US4790705A (en) * | 1980-01-16 | 1988-12-13 | American National Can Company | Method of forming a buckle resistant can end |
US4796772A (en) * | 1987-09-07 | 1989-01-10 | Ball Corporation | Metal closure with circumferentially-variegated strengthening |
US4809861A (en) * | 1980-01-16 | 1989-03-07 | American National Can Company | Buckle resistant can end |
US4832223A (en) * | 1987-07-20 | 1989-05-23 | Ball Corporation | Container closure with increased strength |
US4883190A (en) * | 1988-08-15 | 1989-11-28 | Rampart Packaging, Inc. | Thermoplastic bellows lid for thermoplastic containers |
USRE33217E (en) * | 1982-03-11 | 1990-05-15 | Ball Corporation | Buckle resistance for metal container closures |
US4991735A (en) * | 1989-05-08 | 1991-02-12 | Aluminum Company Of America | Pressure resistant end shell for a container and method and apparatus for forming the same |
US5149238A (en) * | 1991-01-30 | 1992-09-22 | The Stolle Corporation | Pressure resistant sheet metal end closure |
US5829623A (en) * | 1992-12-08 | 1998-11-03 | Toyo Seikan Kaisha, Ltd. | Easily openable can lid |
US5832770A (en) * | 1993-10-08 | 1998-11-10 | Schmalbach-Lubeca Ag | Process for further treating a closure end made of sheet |
US5865587A (en) * | 1994-01-19 | 1999-02-02 | Maiko Engineering Gmbh | Tool for a seaming machine |
US5987956A (en) * | 1995-05-17 | 1999-11-23 | Schmalbach-Lubeca Ag | Process for further treating a closure end made of sheet |
US6123493A (en) * | 1994-01-19 | 2000-09-26 | Schmalbach-Lubeca Ag | Tool for a seaming machine |
US6223931B1 (en) * | 1993-10-08 | 2001-05-01 | Schmalbach-Lubeca Ag | Closure end made of sheet |
WO2003089167A1 (en) * | 2002-04-22 | 2003-10-30 | Crown Cork & Seal Technologies Corporation | Can end |
US20050115976A1 (en) * | 2002-04-22 | 2005-06-02 | Watson Martin J. | Can end |
US10967412B2 (en) | 2012-10-18 | 2021-04-06 | Stolle Machinery Company, Llc | End closure with coined panel radius and reform step |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2210225A (en) * | 1937-05-24 | 1940-08-06 | Easycantop Ltd | Can |
US2971671A (en) * | 1956-10-31 | 1961-02-14 | Pabst Brewing Co | Container |
-
1967
- 1967-03-03 US US620497A patent/US3441170A/en not_active Expired - Lifetime
- 1967-11-28 DE DE19671607845 patent/DE1607845A1/en active Pending
- 1967-12-13 AT AT1123067A patent/AT286863B/en not_active IP Right Cessation
-
1968
- 1968-02-29 FR FR1558660D patent/FR1558660A/fr not_active Expired
- 1968-03-01 GB GB00175/68D patent/GB1170402A/en not_active Expired
- 1968-03-01 DK DK86168AA patent/DK140368B/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2210225A (en) * | 1937-05-24 | 1940-08-06 | Easycantop Ltd | Can |
US2971671A (en) * | 1956-10-31 | 1961-02-14 | Pabst Brewing Co | Container |
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3774801A (en) * | 1971-02-22 | 1973-11-27 | American Can Co | Reinforced metal can end |
US3875884A (en) * | 1971-11-03 | 1975-04-08 | Nat Can Corp | Full open end and method of making |
US3979009A (en) * | 1975-03-21 | 1976-09-07 | Kaiser Aluminum & Chemical Corporation | Container bottom structure |
US4217843A (en) * | 1977-07-29 | 1980-08-19 | National Can Corporation | Method and apparatus for forming ends |
US4448322A (en) * | 1978-12-08 | 1984-05-15 | National Can Corporation | Metal container end |
US4809861A (en) * | 1980-01-16 | 1989-03-07 | American National Can Company | Buckle resistant can end |
US4790705A (en) * | 1980-01-16 | 1988-12-13 | American National Can Company | Method of forming a buckle resistant can end |
US4361246A (en) * | 1980-12-17 | 1982-11-30 | Alexander Nelson | Container construction |
US4577774A (en) * | 1982-03-11 | 1986-03-25 | Ball Corporation | Buckle resistance for metal container closures |
AU569465B2 (en) * | 1982-03-11 | 1988-02-04 | Ball Corporation | Container end and method of further forming |
EP0088968A1 (en) * | 1982-03-11 | 1983-09-21 | Ball Corporation | A method for further forming a metal closure and a metal container end |
USRE33217E (en) * | 1982-03-11 | 1990-05-15 | Ball Corporation | Buckle resistance for metal container closures |
EP0103074A3 (en) * | 1982-09-09 | 1984-05-23 | Ball Corporation | Increased strenght for metal closures through reversing curved segments |
EP0103074A2 (en) * | 1982-09-09 | 1984-03-21 | Ball Corporation | Increased strenght for metal closures through reversing curved segments |
US4606472A (en) * | 1984-02-14 | 1986-08-19 | Metal Box, P.L.C. | Reinforced can end |
US4832223A (en) * | 1987-07-20 | 1989-05-23 | Ball Corporation | Container closure with increased strength |
US4796772A (en) * | 1987-09-07 | 1989-01-10 | Ball Corporation | Metal closure with circumferentially-variegated strengthening |
US4883190A (en) * | 1988-08-15 | 1989-11-28 | Rampart Packaging, Inc. | Thermoplastic bellows lid for thermoplastic containers |
US4991735A (en) * | 1989-05-08 | 1991-02-12 | Aluminum Company Of America | Pressure resistant end shell for a container and method and apparatus for forming the same |
US5149238A (en) * | 1991-01-30 | 1992-09-22 | The Stolle Corporation | Pressure resistant sheet metal end closure |
US5829623A (en) * | 1992-12-08 | 1998-11-03 | Toyo Seikan Kaisha, Ltd. | Easily openable can lid |
US5832770A (en) * | 1993-10-08 | 1998-11-10 | Schmalbach-Lubeca Ag | Process for further treating a closure end made of sheet |
US6223931B1 (en) * | 1993-10-08 | 2001-05-01 | Schmalbach-Lubeca Ag | Closure end made of sheet |
US5865587A (en) * | 1994-01-19 | 1999-02-02 | Maiko Engineering Gmbh | Tool for a seaming machine |
US6123493A (en) * | 1994-01-19 | 2000-09-26 | Schmalbach-Lubeca Ag | Tool for a seaming machine |
US5987956A (en) * | 1995-05-17 | 1999-11-23 | Schmalbach-Lubeca Ag | Process for further treating a closure end made of sheet |
EP1361164A1 (en) * | 2002-04-22 | 2003-11-12 | Crown Cork & Seal Technologies Corporation | Can end |
WO2003089167A1 (en) * | 2002-04-22 | 2003-10-30 | Crown Cork & Seal Technologies Corporation | Can end |
US20040238546A1 (en) * | 2002-04-22 | 2004-12-02 | Watson Martin John | Can end |
US20050115976A1 (en) * | 2002-04-22 | 2005-06-02 | Watson Martin J. | Can end |
US20070029324A1 (en) * | 2002-04-22 | 2007-02-08 | Crown Cork & Seal Technologies Corporation | Can end |
US7370774B2 (en) | 2002-04-22 | 2008-05-13 | Crown Cork & Seal Technologies | Can end |
US7591392B2 (en) | 2002-04-22 | 2009-09-22 | Crown Packaging Technology, Inc. | Can end |
US20100044383A1 (en) * | 2002-04-22 | 2010-02-25 | Crown Cork & Seal Technologies Corporation | Can end |
US8157119B2 (en) | 2002-04-22 | 2012-04-17 | Crown Packaging Technology, Inc. | Can end |
US8496132B2 (en) | 2002-04-22 | 2013-07-30 | Crown Packaging Technology, Inc. | Can end |
US8851323B2 (en) | 2002-04-22 | 2014-10-07 | Crown Packaging Technology, Inc. | Can end |
US10967412B2 (en) | 2012-10-18 | 2021-04-06 | Stolle Machinery Company, Llc | End closure with coined panel radius and reform step |
Also Published As
Publication number | Publication date |
---|---|
GB1170402A (en) | 1969-11-12 |
DK140368C (en) | 1980-03-03 |
DE1607845A1 (en) | 1972-01-05 |
AT286863B (en) | 1970-12-28 |
FR1558660A (en) | 1969-02-28 |
DK140368B (en) | 1979-08-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3441170A (en) | Coined bead for improved fill characteristics | |
US4503989A (en) | Can end with retained tear strip | |
US3941277A (en) | Embossed can end construction | |
US3779417A (en) | Flex tab for a gated can lid | |
US5375729A (en) | Easy-open container end | |
US4386713A (en) | Full opening steel can end construction | |
US3225957A (en) | Metal end closure | |
US3480175A (en) | Single pull ring tab | |
US4054228A (en) | Can end closure having first and second sealing means | |
US4318493A (en) | Easy opening container | |
US3221923A (en) | Multi-paneled metal can-end with scored and beaded tear strip | |
GB1305669A (en) | ||
US3735892A (en) | Full open end having chordal start tear score sections | |
US4044915A (en) | Container end closure | |
US2119533A (en) | Easy opening container | |
US3485410A (en) | Pressure relief score | |
US4723684A (en) | Can lid with integral push-in tab | |
US4585140A (en) | Can lid with integral push-in tab | |
US4432466A (en) | Container having closure panel including integrally formed scoop rupturable therefrom | |
US3416699A (en) | Vented easy opening can | |
US3544025A (en) | Full open end | |
US4258859A (en) | No-fin scored metal ends for containers | |
US4503990A (en) | Drawn can for food and the like | |
US4043479A (en) | Front opening easy-opening end closure with vent | |
US3554400A (en) | Nonflipping beer can end |