US3637105A - Pull-strip opening means - Google Patents

Pull-strip opening means Download PDF

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Publication number
US3637105A
US3637105A US878515A US3637105DA US3637105A US 3637105 A US3637105 A US 3637105A US 878515 A US878515 A US 878515A US 3637105D A US3637105D A US 3637105DA US 3637105 A US3637105 A US 3637105A
Authority
US
United States
Prior art keywords
strip
lid
container
solder
metal
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
Application number
US878515A
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English (en)
Inventor
Michel Leblois
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.)
METALLURG DE DOUARNENEZ SOC
SOC METALLURGIQUE DE DOUARNENEZ
Original Assignee
METALLURG DE DOUARNENEZ SOC
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
Application filed by METALLURG DE DOUARNENEZ SOC filed Critical METALLURG DE DOUARNENEZ SOC
Application granted granted Critical
Publication of US3637105A publication Critical patent/US3637105A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • B65D55/08—Annular elements encircling container necks
    • B65D55/0818—Destructible or permanently removable bands, e.g. adhesive
    • B65D55/0836—Metallic strips, e.g. soldered on container and lid

Definitions

  • ABSTRACT A tinned-food can which can be opened manuall sumer witheut the aid of a key or a tool and a spigoting lid, the joint bein than one-tenth of a millimeter
  • Foreign Application Priority Data y by the con comprising a body g covered by a metal strip less thick welded or bonded to the edge ofthe lid and to the wall ofthe can body.
  • the present invention relates to sealed metal containers of any shape whatsoever, capable of being autoclaved, and more particularly to canned-food containers made of tin, and has for its object to enable the same to be opened manually by the consumer without the aid of a key or a tool.
  • a can according to this invention comprises a body portion and a lid spigoted into each other, and a very thin metal strip welded to the body and to the lid so as to form a leaktight joint therebetween.
  • the lid and body portion of the can, as well as the strip, are made of tin, the thickness of the strip generally lying between one-twentieth and one-tenth of a millimeter.
  • the choice of the strip thickness depends on the nature of the steel used for the strip, it being necessary for the latter to have very little rigidi ty.
  • This metal strip which is intended to be removed manually by the consumer, must be so welded to the body and the lid as to allow the two welds to be separated, since it is essential that, following removal of the strip, separation of the lid and the can should not be prevented by a continuity of the weld between these two elements.
  • Such separation of the two welds can be obtained either by applying the weld only along the two edges of the strip, or else by adopting a configuration for the can elements such that ripping off of the strip automatically breaks up any possible continuity in the weld, or again by a combination of these two methods.
  • FIGS. I and 4 are side elevation views in partial axial section of two embodiments of a can according to the invention.
  • FIGS. 2 and 3 show the inside face of a strip section according to two possible forms of embodiment.
  • the can body is formed by a lateral wall (substantially cylindrical in the illustrated example) and a bottom 2 which is crimped on at 3 after filling has taken place at the canning plant, in the manner well known per se.
  • the lateral wall 1 is formed with a reduced edge l opposite the crimping 3, and the lateral wall 5 of a lid 6 engages over the reduced edge 4.
  • a very thin metal strip 7 has its two edges welded respectively to the rim 5 of lid 6 and to the lateral wall I of the can body.
  • This metal strip circles the can and is made with a slight extra length to form a gripping tab II.
  • this gripping tab In order to make this gripping tab easily identifiable and make it easier to grip, its tip may possibly be suitably marked or shaped.
  • the weld is applied without special precautions along the strip 7, and the latter is coated along its middle with an insulating coating 9, such as a varnish, to prevent the weld from being effective therealong and causing undesirable direct joining of the rim 5 of the lid with the lateral wall I of the can body.
  • an insulating coating 9 such as a varnish
  • weld seams 8a, 8b are applied along either edge of the strip 7, a gap being left between the two seams.
  • the same result can be obtained with a metal strip 7 devoid of insulating substance 9 and a ed weld seams 8a, 8b, b rovidin an em t s ace l0 b et ili een the elements to be v t elded t ogether, an uch manner that the weld be unable to fill this space.
  • the lid 6 may be located with advantage by the inside face ll2 of a channel 13 formed in the lid.
  • FIGS. 3 and 4 It may be useful in some cases, for greater dependability, to use the methods of FIGS. 3 and 4 at the same time, namely to use a strip 7 with gapped weld seams 8a, 8b over a can having an empty space 10 between the eiements to be welded.
  • a sealed metal container in particular in autoclavable can for food and perishable products preservation, comprising: a body portion provided with an opening, a lid over said opening and a strip of metal soldered to said body and said lid to hermetically seal said container, and wherein an extra portion of unsoldered strip is provided for future detaching of the strip from said body and said lid, the improvement wherein the thickness of the metal strip is less than about one tenth of a millimeter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Package Frames And Binding Bands (AREA)
US878515A 1968-11-29 1969-11-20 Pull-strip opening means Expired - Lifetime US3637105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR175905 1968-11-29

Publications (1)

Publication Number Publication Date
US3637105A true US3637105A (en) 1972-01-25

Family

ID=8657629

Family Applications (1)

Application Number Title Priority Date Filing Date
US878515A Expired - Lifetime US3637105A (en) 1968-11-29 1969-11-20 Pull-strip opening means

Country Status (9)

Country Link
US (1) US3637105A (xx)
JP (1) JPS518073B1 (xx)
BE (1) BE741738A (xx)
CA (1) CA931113A (xx)
DE (1) DE1958799A1 (xx)
ES (1) ES179765Y (xx)
FR (1) FR1596731A (xx)
GB (1) GB1268525A (xx)
OA (1) OA03176A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817198A (en) * 1971-11-02 1974-06-18 Franpac Method of assembling a metal container by a soldered strip
JPS5612033U (xx) * 1979-07-09 1981-02-02
WO2003018420A1 (en) 2001-08-31 2003-03-06 Glud & Marstrand A/S A recloseable and retortable can

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58185888U (ja) * 1982-06-02 1983-12-10 株式会社ケンウッド Ｌｅｄ素子によるパネル表示器
WO1991007330A1 (fr) * 1989-11-13 1991-05-30 Sekisui Kagaku Kogyo Kabushiki Kaisha Recipient hermetique et procede de fabrication de ce recipient
JPH0672262U (ja) * 1993-03-19 1994-10-07 オータックス株式会社 発光装置
FR2722713B1 (fr) * 1994-07-25 1996-09-27 Metal Box Plc Procede de fabrication d'une boite metallique

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344945A (en) * 1964-12-18 1967-10-03 Continental Can Co Resealable can
US3516852A (en) * 1964-07-22 1970-06-23 Minnesota Mining & Mfg Adhesive strip

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516852A (en) * 1964-07-22 1970-06-23 Minnesota Mining & Mfg Adhesive strip
US3344945A (en) * 1964-12-18 1967-10-03 Continental Can Co Resealable can

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817198A (en) * 1971-11-02 1974-06-18 Franpac Method of assembling a metal container by a soldered strip
JPS5612033U (xx) * 1979-07-09 1981-02-02
JPS6040418Y2 (ja) * 1979-07-09 1985-12-05 大和製缶株式会社 自動判別器で判別するに適した金属製缶蓋
WO2003018420A1 (en) 2001-08-31 2003-03-06 Glud & Marstrand A/S A recloseable and retortable can

Also Published As

Publication number Publication date
JPS518073B1 (xx) 1976-03-13
BE741738A (xx) 1970-04-16
ES179765U (es) 1973-01-01
OA03176A (fr) 1970-12-15
GB1268525A (en) 1972-03-29
CA931113A (en) 1973-07-31
FR1596731A (xx) 1970-06-22
ES179765Y (es) 1973-12-16
DE1958799A1 (de) 1970-07-09

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