US3682350A - Easy opening rectangular metal container - Google Patents
Easy opening rectangular metal container Download PDFInfo
- Publication number
- US3682350A US3682350A US12349A US3682350DA US3682350A US 3682350 A US3682350 A US 3682350A US 12349 A US12349 A US 12349A US 3682350D A US3682350D A US 3682350DA US 3682350 A US3682350 A US 3682350A
- Authority
- US
- United States
- Prior art keywords
- score line
- top end
- ledge
- wall
- end wall
- 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
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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
- B65D17/4011—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 completely by means of a tearing tab
Definitions
- the can has a rectangular seamless deep drawn cup-like body with integral bottom and side walls, and an easy open top end wall seamed to the body.
- the can body is generally rectangular in cross section and has parallel side walls with a depth to minimum width ratio of at least approximately one and one-half to one.
- the container where used for food products, has the body and top end wall formed of aluminum.
- the invention relates to easy open cans for food products and more particularly to a generally rectangular can having the size, shape and general configuration of cans in which corned beef and other meat or food products traditionally have been packed.
- the invention relates to cans or containers having a seamless cup-shaped rectangular body with an end wall seamed thereto provided with .easy open, tear-out, end wall devices upon the opening or tearing out of which the entire contents of the container may slide out from the open end wall in one piece retaining the shape imparted thereto by the interior of the container body the seamed top and bottom panels, is entirely open for extracting the contents of the can in one piece, but raw metal edges remain along the side walls on which the user maybe cut.
- the usual corned beef cans have had slightly tapered side walls for ease of removal of the can contents.
- the rectangular corned beef and chopped meat cans have a height considerably greater than the narrower width of the rectangular side walls, the height being from one and one-half to two times the minimum width of the can.
- the invention relates to containers having the features indicated which may be formed of aluminum in which food products may be packed.
- Such cans usually have been made of tinplate with a vertically seamed (soldered) rectangular or oval side wall and separate top and bottom walls double seamed to the open side wall ends, A tear strip formed by score lines is usually provided around the side walls or in the top wall removed by use of a key, usually furnished with the can, to gain access to the contents of the can.
- Typical of such prior cans are those used for packing sardines, corned beef, hams, chopped meat products, and the like.
- the usual rectangular corned beef can and the usual oval or semi-oval ham can each have a narrow tear strip surrounding the side walls completely, adjacent to but spaced from the seamed top or bottom wall.
- a raw metal edge results where the tear strip is torn from the side walls upon which the user may be cut. Also portions of the side walls remain seamed to the top and bottom walls. This permits the contents of the can to be removed in one piece normally without disturbing its shape so that it may be sliced easily or may be cooked in one piece.
- Sardine cans are similar but normally the tear out portion is in the top all of the can and its shape, for providing a key engageable tab, leaves triangular portions at comers of the top wall as a part of the opened can. Sometimes it is difficult to remove the sardines in whole pieces without breaking them and it normally is not possible to remove the contents of such a can in one piece. Sardine cans sometimes have been made of a cup-shaped bottom and side wall member to which the top wall is seamed. However, the cup-shaped member is relatively shallow in depth as compared to its width and length whether oval or rectangular.
- the tear strip has two generally triangularly-shaped portions at the ends of the two side walls joined to one end wall portion; When this tear strip is removed, one end of the can, between removal of tear-out devices through which the loaf-like contents may be removed in one piece, which reduces the number of double seaming operations that must be carried out in the manufacture of the container, which eliminates the use of separate keys or the like, for opening the container, and which simulates the appearance, shape and general impression conveyed, both as to can and contents when removed of prior corned beef or chopped meat product cans.
- a rectangular metal food product can having a seamless cup-like body with integral bottom and parallel side and end walls and an easy open top end wall seamed to the open end of the body; providing a construction in which the seamless body and easy open end wall are formed of aluminum and in which the body has a height from one and one-half to two or more times the narrower or minimum width of the body; providing a construction in which the outward shape and appearance of the can and its contents when removed simulate the outward shape and appearance of prior corned beef or chopped meat product cans and their contents; and providing a construction which avoids the difficulties encountered with prior structures and achieves the stated objectives simply, efiectively and inexpensively.
- a can body having a seamless cup-like form including a bottom wall and integral side and end walls generally rectangular in cross section; the side and end walls, respectively, being parallel with each other and perpendicular to the bottom wall; an outwardly upwardly directed recessed shoulder formed adjacent the upper ends of the side and end walls providing a continuous ledge adjacent the upper open end of the body; a top end wall seamed to the body above the ledge having a recessed end panel seated on said ledge; the body and top end wall being formed of aluminum; the end panel being scored adjacent said ledge by a continuous score line located in a zone above the ledge and outside the projected inner surfaces of said body side and end walls; a ring pull tab secured to the end panel, whereby lifting of the ring pull tab tears the end panel from the top end wall along and throughout said score line, and whereby the raw metal edge of the end wall at the score line is located in said recessed shoulder protected against accidental contact by said ledge; the
- FIG. 1 is a top plan view of the improved can body before seaming a top end wall thereto;
- FIG. 2 is a side elevation of the can body shown in FIG. 1;
- FIG. 3 is an end elevation of the can body shown in FIGS. 1 and 2;
- FIG. 4 is a top plan view of the improved container with an easy open top wall seamed to the can body shown in FIGS. I3;
- FIG. 5 is an enlarged fragmentary section of the upper end of the container taken on the line 55, FIG. 4.
- the improved container body generally indicated at 1 is preferably formed of aluminum and has a generally rectangular cup-like shape formed by a bottom wall 2 and spaced side walls 3 and end walls 4 integral with the bottom wall.
- the side walls 3 are parallel with each other, as are the end walls 4; and the side and end walls 3 and 4 are perpendicular to the bottom wall 2.
- the side walls 3 and end walls 4 are connected by rounded comers 5 which may have any desired degree of curvature, depending upon the desired shape of the food product loaf packed in the container, and the curvature necessary to permit the body 1 to be deep drawn as a seamless article.
- the deep drawn body 1 is formed adjacent its upper open end with an outwardly upwardly recessed shoulder 6 providing a continuous ledge 7 adjacent the upper ends of the side and end walls 3 and 4 of the body 1.
- the upper ends of the side and end walls 3 and 4 terminate in an outturned flange 8.
- the improved container is provided with a top end wall member 9 seamed in the usual manner by a double seam 10 (FIGS. 4 and 5) to the flange 8 of body 1.
- Member 9 has a recessed end panel 11, the recessed corner 12 of which is seated on the body ledge 7 when the member 9 is seamed to body 1.
- End panel 11 is scored adjacent ledge 7 and recessed corner 12 with a continuous score line 13 located in a zone above ledge 7 and outside the projected inner surfaces of the side and end walls 3 and 4 of body 1 as shown in FIG. 5.
- a ring pull tab 14 is secured by a rivet 15 preferably integral with member 9 to end panel 11 with its rounded nose l6 overlapping and extending beyond score line 13.
- the ring pull tab 14 and its relation to score line 13 may be made in accordance with U5. Pat. No. 3,490,643 dated Jan. 20, I970.
- the score line 13 preferably is located as close as possible to recessed comer 12, except that a short section 13a of score line 13 (FIG. 4) in the zone where rounded tab nose l6 overlaps the score line may be offset inwardly of comer 12 to accommodate the chuck of a seaming tool used to form the double seam 10.
- the score line 13 defines an end panel tear-out portion of the end panel 1 1.
- ring pull tab 14 When ring pull tab 14 is lifted, it tears out the end panel tear-out portion along the score line 13 from the end wall leaving the raw metal end wall edge at the score line located within the recess of recessed shoulder 6 protected by the double seam 10 and ledge 7 against accidental contact.
- the side walls 3 have a length substantially greater than the width of the end walls 4, and side and end walls 3 and 4 have a height between bottom wall 2 and end panel 1 1 at least one and one-half times the width of end walls 4.
- the container or end wall width may be two inches
- the container or side wall length may be 3% inches
- the container height between bottom wall 2 and end panel 11 may be 3 inches.
- the invention is not limited to a container having the dimensions indicated but comprehends containers of other sizes having a similar dimensional relationship or geometry.
- a container having a seamless rectangular can body formed of a metal bot tom wall and integral side and end walls perpendicular to the bottom wall with a height of at least one and onehalf times the minimum width of the container was unknown as an actual, physical, commercially acceptable and usable metal product.
- a further aspect of the invention is the concept of a container for food products which maintains in general the traditional shape of canned meat products, such as corned beef and chopped meat products; but eliminates the requirement of using tinplate and of providing equipment for seaming and soldering tinplate container side walls and for seaming bottom and top walls to such side walls; and which eliminates the use of tear strips leaving raw edges upon which the user may be cut, and of providing keys for tearing away the tear strips.
- the improved container construction is characterized by the new combination of features and results enumerated; and avoids the stated difficulties encountered with prior structures; and achieves the stated objectives in a simple, effective, economic and commercially acceptable manner; and thereby solves longstanding problems in the art.
- a can body having a seamless cup-like form including a bottom wall and integral side and end walls generally rectangular in cross section; the side and end walls, respectively, having inner surfaces and being parallel with each other and perpendicular to the bottom wall; a continuous ledge located adjacent but spaced from the upper open end of the body provided by an outwardly, upwardly directed recessed shoulder formed in the upper ends of the side and end walls; a top end wall, a double seam between the top end wall and body above the ledge, the top end wall having a recessed end panel surrounded by a recessed comer, the recessed corner being seated on the body ledge; a continuous score line in said top end wall close to said comer and adjacent the ledge, the score line being located in a zone above the ledge and outside the projected inner surfaces of the body side and end walls; the score line defining an end panel tearout portion; a ring pull tab secured to the end panel; the length of the can body between end walls being substantially greater than the width of the can body between side walls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1234970A | 1970-02-18 | 1970-02-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3682350A true US3682350A (en) | 1972-08-08 |
Family
ID=21754548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12349A Expired - Lifetime US3682350A (en) | 1970-02-18 | 1970-02-18 | Easy opening rectangular metal container |
Country Status (4)
Country | Link |
---|---|
US (1) | US3682350A (pt) |
AR (1) | AR196599A1 (pt) |
BR (1) | BR7101078D0 (pt) |
CA (1) | CA920522A (pt) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3837524A (en) * | 1972-03-27 | 1974-09-24 | J Schubert | Easy opening container wall |
US3838788A (en) * | 1973-03-15 | 1974-10-01 | Dorn Co V | Can end construction |
US4116360A (en) * | 1972-02-28 | 1978-09-26 | Van Dorn Company | Can end with protective fold |
US4350262A (en) * | 1980-05-21 | 1982-09-21 | Toyo Seikan Kaisha, Ltd. | Easy-open can cap with a ring pull tab |
US4593834A (en) * | 1984-08-17 | 1986-06-10 | Schmalbach-Lubeca Ag | Opening means for oblong cans |
US4690297A (en) * | 1985-10-02 | 1987-09-01 | Schmalbach-Lubeca Ag | Opening means for oblong cans |
US4819826A (en) * | 1986-10-20 | 1989-04-11 | Envases Carnaud, S.A. | Tool for opening a can with a top which is easy to open |
US20050178379A1 (en) * | 2004-01-14 | 2005-08-18 | Michael Weinberger | Alcohol gel fireplace burner |
US20060060582A1 (en) * | 2002-11-07 | 2006-03-23 | Estanislao Martinez Gomez | Easy-openning lid |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3179282A (en) * | 1963-06-12 | 1965-04-20 | Central States Can Corp | Container manufacture |
US3232474A (en) * | 1963-09-24 | 1966-02-01 | Aluminum Co Of America | Opening means for sealed containers |
US3251502A (en) * | 1963-12-17 | 1966-05-17 | Continental Can Co | Safe opening can |
US3454185A (en) * | 1967-08-31 | 1969-07-08 | Fraze Ermal C | Easy opening can end |
US3490643A (en) * | 1968-01-22 | 1970-01-20 | Dorn Co V | Full opening container end |
-
1970
- 1970-02-18 US US12349A patent/US3682350A/en not_active Expired - Lifetime
- 1970-10-16 CA CA095775A patent/CA920522A/en not_active Expired
-
1971
- 1971-01-26 AR AR233649A patent/AR196599A1/es active
- 1971-02-17 BR BR1078/71A patent/BR7101078D0/pt unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3179282A (en) * | 1963-06-12 | 1965-04-20 | Central States Can Corp | Container manufacture |
US3232474A (en) * | 1963-09-24 | 1966-02-01 | Aluminum Co Of America | Opening means for sealed containers |
US3251502A (en) * | 1963-12-17 | 1966-05-17 | Continental Can Co | Safe opening can |
US3454185A (en) * | 1967-08-31 | 1969-07-08 | Fraze Ermal C | Easy opening can end |
US3490643A (en) * | 1968-01-22 | 1970-01-20 | Dorn Co V | Full opening container end |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4116360A (en) * | 1972-02-28 | 1978-09-26 | Van Dorn Company | Can end with protective fold |
US3837524A (en) * | 1972-03-27 | 1974-09-24 | J Schubert | Easy opening container wall |
US3838788A (en) * | 1973-03-15 | 1974-10-01 | Dorn Co V | Can end construction |
US4350262A (en) * | 1980-05-21 | 1982-09-21 | Toyo Seikan Kaisha, Ltd. | Easy-open can cap with a ring pull tab |
US4593834A (en) * | 1984-08-17 | 1986-06-10 | Schmalbach-Lubeca Ag | Opening means for oblong cans |
US4690297A (en) * | 1985-10-02 | 1987-09-01 | Schmalbach-Lubeca Ag | Opening means for oblong cans |
US4819826A (en) * | 1986-10-20 | 1989-04-11 | Envases Carnaud, S.A. | Tool for opening a can with a top which is easy to open |
US20060060582A1 (en) * | 2002-11-07 | 2006-03-23 | Estanislao Martinez Gomez | Easy-openning lid |
US20050178379A1 (en) * | 2004-01-14 | 2005-08-18 | Michael Weinberger | Alcohol gel fireplace burner |
Also Published As
Publication number | Publication date |
---|---|
CA920522A (en) | 1973-02-06 |
AR196599A1 (es) | 1974-02-12 |
BR7101078D0 (pt) | 1973-05-03 |
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