US3774795A - Receptacle with an externally threaded neck closed by a crown cork - Google Patents

Receptacle with an externally threaded neck closed by a crown cork Download PDF

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Publication number
US3774795A
US3774795A US00170868A US3774795DA US3774795A US 3774795 A US3774795 A US 3774795A US 00170868 A US00170868 A US 00170868A US 3774795D A US3774795D A US 3774795DA US 3774795 A US3774795 A US 3774795A
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US
United States
Prior art keywords
neck
crown
threads
ring
sealing surface
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
US00170868A
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English (en)
Inventor
A Leenaards
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.)
Crown Cork and Seal Co Inc
Original Assignee
Crown Cork and Seal Co Inc
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Filing date
Publication date
Priority claimed from FR7029993A external-priority patent/FR2112052B1/fr
Application filed by Crown Cork and Seal Co Inc filed Critical Crown Cork and Seal Co Inc
Application granted granted Critical
Publication of US3774795A publication Critical patent/US3774795A/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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/10—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts
    • B65D41/12—Caps or cap-like covers adapted to be secured in position by permanent deformation of the wall-engaging parts made of relatively stiff metallic materials, e.g. crown caps
    • 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
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
    • B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
    • B65D1/023—Neck construction
    • B65D1/0246—Closure retaining means, e.g. beads, screw-threads

Definitions

  • the height of the threads as measured from the upper surface of the neck is greater than one-quarter of the external diameter of the neck at the threads.
  • the neck is provided with a ring below the threads having a diameter exceeding the external diameter of the neck at the threads by at least 10 percent.
  • Standard bottles have external diameters equal to 25 mm, rarely greater than 26 mm; for such bottles, the ring diameter exceeds the external diameter by at least 2.5 mm.
  • the ring protects and guides the fingers of the user when unscrewing the crown.
  • the present invention relates to a container with an extemally-threaded neck adapted to be closed by a twist-off crown having a skirt crimped over the threads.
  • I ers have not provided ease of opening in combination with a fluid-tight seal between the crown and the bottle neck.
  • the neck of the bottle comprises three threads 1 on the side of the neck having a neck diameter D and an upper sealing surface 2 with a connecting radius 3 therebetween.
  • a connecting radius 4 joins the upper surface 2 with the cylindrical internal surface having a diameter D Note that the threads begin at a distance h from the upper sealing surface 2 and end at a distance h The distance h is generally less than onequarter of the neck diameter D,.
  • a crown In order to close a neck of this kind, a crown can be crimped on to the threads as shown in FIG. 2.
  • the gripping of the crown by hand is difficult since the points of the skirt teeth 5 project outwardly and may cut the fingers of the user when the crown is gripped.
  • certain manufacturers have blunted the points of the teeth of the crown at the time of its manufacture.
  • the crown which is shown in FIG. 3 is provided with a cylindrical edge 6 instead of the points of the teeth.
  • This solution to the problem presents other problems in manufacturing (the conventional presses for punching out the crown are no longer suitable). Furthermore, such a crown may be difficult to unscrew.
  • the cylindrlcal edge 6 is bent back under the beginning of the thread located at the distance h from the upper sealing surface 2.
  • This distance h is calculated by the bottle manufacturer so as to be less than or substantially equal to the height h of the crown before sealing.
  • the crown is deformed by the action of the crimping jaw and its total height becomes h which is greater than h due to the bending back of the cylindrical edge 6 under the bottom of the thread. This bending back causes considerable difficulty to the user who wishes to unscrew the crown. The problem of gripping and unscrewing the crown thus remains unsolved.
  • the sealing ring of the crown utilized in closing the bottle of FIG. 1, can itself present a problem in removing or unscrewing the crown.
  • the prior art sealing ring (cork or plastic) of some crowns have resulted in its compression on the upper surface 2, along the coupling radius 3, and also on the cylindrical external surface having the diameter D This in turn results in considerable friction which can prevent unscrewing by hand.
  • some manufacturers have provided a kind of bottle opener in the bottom of the bottle (serving as housing for the crown) which makes it possible to open a bottle by using another bottle. This merely avoids the unscrewing problem and does not solve the problem.
  • the sealing joint is compressed on a connecting radius with the internal cylindrical surface on the neck.
  • This part of the bottle is particularly difficult for the bottle maker to manufacture. There are therefore large tolerances on the diameter and defects, which make fluid-tight sealing doubtful. Even where the tolerances are maintained, the internal pressure existing inside the closed bottle (in the case of gassy liquids) outwardly deforms the base of the crown, and this deformation increases towards the center of the crown. A sealing ring such as that which has just been considered will therefore become decompressed and the seal may be broken.
  • FIG. 5 shows a conventional, commercially available crown which is intended to close the neck of a bottle such as that shown in FIG. 1 while eliminating the third drawback, decompression of the sealing ring.
  • the crown comprises as a sealing means an annular ring 7 surrounding a base coating 8.
  • the ring 7 is wholly located inside a cylindrical zone which has substantially as its diameter, the neck diameter D
  • the ring 7 lies partly in the skirt-bottom connecting zone of the shell and partly on the bottom of the shell. Actually, it is located at the outer limit of the shell-bottom.
  • this ring will become compressed on the upper surface 2, in a zone close to the connecting radius 3, and over at least part of the connecting radius 3.
  • This offers two advantages 2 l.
  • the compression zone of the ring on the bottle is a zone easy for the bottle maker to produce, and it may therefore be expected that the sealing surface has been particularly well made and within the appropriate tolerances.
  • a bottle having a threaded neck adapted to receive a twist-off crown and a ring located beneath the threads on the neck.
  • the diameter of the ring is sufficiently large to guide the fingers of the user and prevent injurious contact with the crown points at the bottom of the crimped crown skirt.
  • the diameter of the ring may exceed the diameter of the threaded neck by percent.
  • the diameter of the ring exceeds that of the neck by at least 2.5 mm.
  • Such a ring thus enables the resolution of the problem of the gripping of the crown for removal by unscrewing by protecting and guiding the users fingers.
  • the threads on the neck of the bottle have sufficient height to prevent the locking of the crown on the neck when the bottom of the skirt is crimped inwardly.
  • the overall height of the threads may be greater than one-quarter of the neck diameter.
  • FIG. 1 is an elevational view of the neck of a prior art bottle
  • FIG. 2 shows the neck of FIG]. in combination with a conventional twist-off crown
  • FIG. 3 is an elevational view of a conventional prior art crown
  • FIG. 4 is a partially sectioned view of the crown of FIG. 3 in place on the bottle neck of FIG. 1;
  • FIG. 5 is a sectional view of the prior art crown of FIG. 3;
  • FIG. 6 is an elevational view of a bottle neck embodying the invention.
  • FIG. 7 shows the neck of FIG. 6 in combination with a conventional twist-off crown and
  • FIG. 8 shows the details of a bottle neck according to the invention on an enlarged scale.
  • the externally threaded neck forming the subject of the present invention comprises four threads 9, an upper pling radius 11, and also by a portion of the coupling radius. It may be advantageous to utilize a very small coupling radius (close to a right angle) which has the effect of better localizing the sealing surface (solely on the upper surface 10), and thus of better controlling the unscrewing force if this should prove necessary.
  • the threads begin at a distance h;, from the upper surface 10. This distance is in fact calculated so as to be greater than the height h of the crown of fact the diameter D shown in FIG. 7, which is a precise indication of the'degree of closure of the crown on the threads.
  • This diameter D is generally determined by the crown manufacturer.
  • the diameter D., of the ring 12 of the invention is equal to or greater than the crimping diameter D of the crown.
  • This diameter D is a function of the diameter D, of the orifice (not shown) of FIG. 6 and generally, in the range of neck diameters approximately equal to 25 mm, we have The ring of the present invention thus has its diameter defined under these conditions by the relation
  • the neck as shown in FIG. 6 is provided with a ring 12 having a diameter D.,. This ring prevents the user from hurting his fingers at the time of unscrewing the capsule as shown in FIG. 7.
  • a closure is characterized by a magnitude known as the crimping size. This is in FIG. 5 (or of FIG. 3) before closing so as to remain greater than the height h' which this crown may have after crimping.
  • the conditions are therefore h h" h It is thus readily understood that the base of the skirt of the crown can no longer be bent back under the beginning of the thread and the known locking effect is thereby eliminated.
  • the distance h, utilized on the neck of FIG. 1 was in general less than one-quarter of D 6.25 mm for neck diameters close to 25 mm. In the case of the embodiment of the present invention, the distance h thus becomes greater than one-quarter of the diameter D, in the aforesaid range.
  • the position of the ring with respect to the bottom of the crown must enable the users fingers to be guided without interfering with the crown. It has been found that the distance from the upper sealing surface to the top of the ring must not exceed one-quarter of the neck diameter by more than approximately 50 percent. Tests have shown that when this limit is exceeded, the beneficial result sought after is no longer present. The position of the ring will be further described relative to FIG. 8
  • the neck diameter D, of the cylindrical surface 17 is the external diameter at the free end of the neck.
  • the cylindrical surface 17 extends axially to the position A at which the threads begin. At this point and extending in the opposite direction begins a zone of widening 14, which connects the cylindrical surface to the ring.
  • top of the ring refers to the axial position E, where the diameter of the neck has a certain minimum value D Below this point the ring has a cylindrical or slightly truncated conical surface terminating in a narrowing zone 16. The diameter of the neck is there fore a limited axial distance equal to that of said neck diameter.
  • bottom of the ring refers to the axial position F where the diameter becomes less than the said value D
  • the width of the ring ought not to be more than 50 percent greater than onequarter of the diameter D
  • the distance H from the upper s'ealing surface to the bottom of the ring will be advantageously limited to value less than twice the height h of the threaded portion such that the width (h h,,) of the ring will remain in general less than half the height h;,.
  • the height h of the threaded portion of the bottle neck will be in any case greater than one-quarter of 25 mm, that is 6.25 mm.
  • the distance k from the upper sealing surface to the bottom of the ring should advantageously be held to values less than twice the distance h such that the width (k h.,) of thering will remain as a rule less than half of the distance h A perfectly satisfactory guiding effect is thus obtained with a ring width in the order of 3 mm.
  • the free end diameter D of the neck is designated by neck diameter.
  • a bottle adapted to be closed by a twist-off crown and comprising an externally threaded neck having a plurality'of threads and a radially outwardly-extending ring located beneath said threads, said ring having a diameter at least equal to maximum diameter of a crown crimped on to said neck so as to prevent injurious contact between the fingers of a user and the edge of the crown skirt.
  • said crown comprises a sealing ring located substantially inside a cylindrical zone of said crown having a diameter substantially equal to the external diameter of said side surface and adapted to be compressed substantially only against said upper sealing surface and said connecting radius.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
US00170868A 1970-08-14 1971-08-11 Receptacle with an externally threaded neck closed by a crown cork Expired - Lifetime US3774795A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7029993A FR2112052B1 (enrdf_load_stackoverflow) 1970-08-14 1970-08-14
FR7124412A FR2144548B2 (enrdf_load_stackoverflow) 1970-08-14 1971-07-05

Publications (1)

Publication Number Publication Date
US3774795A true US3774795A (en) 1973-11-27

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Family Applications (1)

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US00170868A Expired - Lifetime US3774795A (en) 1970-08-14 1971-08-11 Receptacle with an externally threaded neck closed by a crown cork

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Country Link
US (1) US3774795A (enrdf_load_stackoverflow)
AR (1) AR201651A1 (enrdf_load_stackoverflow)
BE (1) BE771177A (enrdf_load_stackoverflow)
CA (1) CA967102A (enrdf_load_stackoverflow)
CH (1) CH541478A (enrdf_load_stackoverflow)
DE (1) DE2139910A1 (enrdf_load_stackoverflow)
ES (1) ES171735Y (enrdf_load_stackoverflow)
FR (1) FR2144548B2 (enrdf_load_stackoverflow)
GB (1) GB1363457A (enrdf_load_stackoverflow)
NL (1) NL7111117A (enrdf_load_stackoverflow)
OA (1) OA03771A (enrdf_load_stackoverflow)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056674A (en) * 1988-11-15 1991-10-15 Larry Swartley Liquid container
US5307943A (en) * 1991-12-02 1994-05-03 Tsuguo Iidaka Bottle with annular groove in its neck and cap
US6164472A (en) * 1994-09-23 2000-12-26 Pelliconi Abruzzo S.R.L. Metal bottle cap
USD587579S1 (en) * 2008-04-22 2009-03-03 Crown Packaging Technology, Inc. Twist off crown closure
USD644822S1 (en) * 2007-12-20 2011-09-13 Keppler Richard E Bottle cap hat
USD649395S1 (en) * 2010-07-30 2011-11-29 Scott Gehring Food container cover
US8322549B2 (en) 2008-04-22 2012-12-04 Crown Packaging Technology, Inc. Twist off crown
WO2014044409A1 (de) * 2012-09-19 2014-03-27 Vetropack Austria Gmbh Drehkronkorkenmündung mit absplitterungsschutz
CN104169192A (zh) * 2012-01-27 2014-11-26 约翰逊父子公司 具定位突起的阀座的热塑瓶及将阀座压接在热塑瓶上的方法
WO2015195059A1 (en) * 2014-06-18 2015-12-23 Bi̇çer Niyazi A package structure for beverages
WO2015200765A1 (en) * 2014-06-26 2015-12-30 Plastipak Packaging, Inc. Plastic container with threaded neck finish
USD830175S1 (en) 2015-06-01 2018-10-09 Obrist Closures Switzerland Gmbh Container neck
US10252845B2 (en) 2014-02-13 2019-04-09 Obrist Closures Switzerland Gmbh Tamper-evident closure
USD894734S1 (en) * 2018-08-02 2020-09-01 Alfredo Abel Merino Bottle cap
USD894737S1 (en) * 2018-08-02 2020-09-01 Alfredo Abel Merino Bottle cap
USD894735S1 (en) * 2018-08-02 2020-09-01 Alfredo Abel Merino Bottle cap
USD894736S1 (en) * 2018-08-02 2020-09-01 Alfredo Abel Merino Bottle cap
USD895424S1 (en) * 2018-08-02 2020-09-08 Alfredo Abel Merino Bottle cap
US11136167B2 (en) 2014-06-26 2021-10-05 Plastipak Packaging, Inc. Plastic container with threaded neck finish
US11560250B2 (en) 2006-03-06 2023-01-24 Plastipak Packaging, Inc. Lightweight plastic container and preform
US11780634B2 (en) 2007-05-16 2023-10-10 Plastipak Packaging, Inc. Lightweight plastic container and preform

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29819366U1 (de) * 1998-10-30 2000-03-09 Sachau, Werner, 49393 Lohne Wulstrandflasche mit einem Kunststoffverschluß
BR202014019062U2 (pt) * 2014-08-01 2016-02-23 Alberto Llahuet Saura aperfeiçoamento introduzido em garrafa e tampa

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503534A (en) * 1968-11-26 1970-03-31 Continental Can Co Bottle cap having protective skirt edge
US3556334A (en) * 1969-05-01 1971-01-19 Flexible Plastics Corp Resealable container
US3559833A (en) * 1968-11-29 1971-02-02 Pepsico Inc Container finish capable of accommodating a variety of different closures
US3606062A (en) * 1970-03-09 1971-09-20 Olympia Brewing Co Bottle structure for crimp on-twist off caps
US3648874A (en) * 1970-07-15 1972-03-14 Continental Can Co Press-on, twist-off bottle cap

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3503534A (en) * 1968-11-26 1970-03-31 Continental Can Co Bottle cap having protective skirt edge
US3559833A (en) * 1968-11-29 1971-02-02 Pepsico Inc Container finish capable of accommodating a variety of different closures
US3556334A (en) * 1969-05-01 1971-01-19 Flexible Plastics Corp Resealable container
US3606062A (en) * 1970-03-09 1971-09-20 Olympia Brewing Co Bottle structure for crimp on-twist off caps
US3648874A (en) * 1970-07-15 1972-03-14 Continental Can Co Press-on, twist-off bottle cap

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056674A (en) * 1988-11-15 1991-10-15 Larry Swartley Liquid container
US5307943A (en) * 1991-12-02 1994-05-03 Tsuguo Iidaka Bottle with annular groove in its neck and cap
US6164472A (en) * 1994-09-23 2000-12-26 Pelliconi Abruzzo S.R.L. Metal bottle cap
US11834222B2 (en) 2006-03-06 2023-12-05 Plastipak Packaging, Inc. Lightweight plastic container and preform
US11560250B2 (en) 2006-03-06 2023-01-24 Plastipak Packaging, Inc. Lightweight plastic container and preform
US12017816B2 (en) 2006-03-06 2024-06-25 Plastipak Packaging, Inc. Lightweight plastic container and preform
US11780634B2 (en) 2007-05-16 2023-10-10 Plastipak Packaging, Inc. Lightweight plastic container and preform
US12391424B2 (en) 2007-05-16 2025-08-19 Plastipak Packaging, Inc. Lightweight plastic container and preform
US11939104B2 (en) 2007-05-16 2024-03-26 Plastipak Packaging, Inc. Lightweight plastic container and preform
USD644822S1 (en) * 2007-12-20 2011-09-13 Keppler Richard E Bottle cap hat
USD587579S1 (en) * 2008-04-22 2009-03-03 Crown Packaging Technology, Inc. Twist off crown closure
US8322549B2 (en) 2008-04-22 2012-12-04 Crown Packaging Technology, Inc. Twist off crown
USD649395S1 (en) * 2010-07-30 2011-11-29 Scott Gehring Food container cover
US9919827B2 (en) * 2012-01-27 2018-03-20 S. C. Johnson & Son, Inc. Thermoplastic bottle with valve cup retaining protrusions and method of crimping a valve cup on a thermoplastic bottle
CN104169192A (zh) * 2012-01-27 2014-11-26 约翰逊父子公司 具定位突起的阀座的热塑瓶及将阀座压接在热塑瓶上的方法
EP2807090B1 (en) * 2012-01-27 2018-05-02 S.C. Johnson & Son, Inc. Thermoplastic bottle with valve cup retaining protrusions and method of crimping a valve cup on a thermoplastic bottle
US20150034584A1 (en) * 2012-01-27 2015-02-05 S.C. Johnson & Son, Inc. Thermoplastic bottle with valve cup retaining protrusions and method of crimping a valve cup on a thermoplastic bottle
CN104169192B (zh) * 2012-01-27 2016-08-03 约翰逊父子公司 具定位突起的阀座的热塑瓶及将阀座压接在热塑瓶上的方法
US9731858B2 (en) 2012-09-19 2017-08-15 Vetropack Austria Gmbh Twist-off crown cap orifice with splintering protection
WO2014044409A1 (de) * 2012-09-19 2014-03-27 Vetropack Austria Gmbh Drehkronkorkenmündung mit absplitterungsschutz
US10252845B2 (en) 2014-02-13 2019-04-09 Obrist Closures Switzerland Gmbh Tamper-evident closure
WO2015195059A1 (en) * 2014-06-18 2015-12-23 Bi̇çer Niyazi A package structure for beverages
US10759559B2 (en) 2014-06-26 2020-09-01 Plastipak Packaging, Inc. Plastic container with threaded neck finish
US11136167B2 (en) 2014-06-26 2021-10-05 Plastipak Packaging, Inc. Plastic container with threaded neck finish
WO2015200765A1 (en) * 2014-06-26 2015-12-30 Plastipak Packaging, Inc. Plastic container with threaded neck finish
CN106573695B (zh) * 2014-06-26 2020-03-24 普拉斯蒂派克包装公司 具有螺纹颈部瓶口的塑料容器
CN106573695A (zh) * 2014-06-26 2017-04-19 普拉斯蒂派克包装公司 具有螺纹颈部瓶口的塑料容器
EP3160855A4 (en) * 2014-06-26 2018-02-28 Plastipak Packaging, Inc. Plastic container with threaded neck finish
USD830175S1 (en) 2015-06-01 2018-10-09 Obrist Closures Switzerland Gmbh Container neck
USD894735S1 (en) * 2018-08-02 2020-09-01 Alfredo Abel Merino Bottle cap
USD894737S1 (en) * 2018-08-02 2020-09-01 Alfredo Abel Merino Bottle cap
USD894736S1 (en) * 2018-08-02 2020-09-01 Alfredo Abel Merino Bottle cap
USD895424S1 (en) * 2018-08-02 2020-09-08 Alfredo Abel Merino Bottle cap
USD894734S1 (en) * 2018-08-02 2020-09-01 Alfredo Abel Merino Bottle cap

Also Published As

Publication number Publication date
OA03771A (fr) 1971-12-24
FR2144548B2 (enrdf_load_stackoverflow) 1975-06-06
DE2139910A1 (de) 1972-02-17
FR2144548A2 (enrdf_load_stackoverflow) 1973-02-16
GB1363457A (en) 1974-08-14
ES171735Y (es) 1972-09-01
CH541478A (fr) 1973-09-15
AR201651A1 (es) 1975-04-08
ES171735U (es) 1972-01-01
NL7111117A (enrdf_load_stackoverflow) 1972-02-16
BE771177A (fr) 1971-12-16
CA967102A (en) 1975-05-06

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