CA1038801A - Tamperproof cap - Google Patents

Tamperproof cap

Info

Publication number
CA1038801A
CA1038801A CA217,396A CA217396A CA1038801A CA 1038801 A CA1038801 A CA 1038801A CA 217396 A CA217396 A CA 217396A CA 1038801 A CA1038801 A CA 1038801A
Authority
CA
Canada
Prior art keywords
cap
pawls
ring
tamperproof
connectors
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
Application number
CA217,396A
Other languages
French (fr)
Other versions
CA217396S (en
Inventor
Walter E. Hidding
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA1038801A publication Critical patent/CA1038801A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/32Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3404Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
    • B65D41/3409Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element the tamper element being integrally connected to the closure by means of bridges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D41/00Caps, 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
    • B65D41/02Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

TAMPERPROOF CAP

Abstract of the Disclosure A tamperproof cap is arranged for use with a con-tainer having a threaded neck portion and at least one external tooth extending radially outwardly adjacent the threaded portion. The tamperproof cap includes a cap body, a tamperproof ring and a plurality of breakable connectors coupling the ring to the cap body. A number of triangularly shaped pawls extend inwardly from the tamperproof ring for locking engagement with the container tooth, and the breakable connectors are joined to the tamperproof ring at the pawls.

Description

1~)38~0~
Back~round of the Invention This invention relates generally to bottle closures and more particularly to tamperproof caps.
Threaded bottle closures have been designed in the past to indicate possible tampering with the bottle contents by means of a ring or seal that is broken away from the cap proper upon turning the cap in the direction of opening. Pawls have been fashioned on the inner surface of the ring to mesh with one or more teeth on the outside surface of the bottle. Of course, either the pawls or the tamperproof ring must flex to permit the pawls to ride over the bottle tëeth in the direction of closing; and the amount of resultant freedom or play has permitted turning some of the prior art ,caps ln the direction of opening without breaking the seal.
A bottle with such a cap can thus be tampered with and there would be no indication that such had occurred.
The present invention overcomes the foregoing difficulty and takes as its principal object the provision of a new and improved tamperproof cap.
Another object of the invention is to provide a tamperproof cap of the type having locking pawls on a break-away ring, in which the pawls are properly located , for sure engagement with the cooperating ratche~ teeth on the neck of the container.
These and other objects and features of the invention will become more apparent from a consideration of the follow-ing description.

~ 3 ~
Brief Description of the Drawing In the drawing:
Fig. 1 is a perspective view showing the tamper-proof cap of the invention assembled with a bottle;
Fig. 2 is an enlarged bottom plan view of the tamperproof cap of Fig. l;
Fig. 3 is an enlarged, central sectional view ~aken along the line 3-3 of Fig. 1, the reclosure cap proper being shown in broken outline as it appears upon breaking of the tamperproo~ seal; and Fig. 4 is a view taken along the line 4-4 of Fig. 3 to show the locking action of the pawls and the toothed surEace of the bottle.
Description of the Preferred Embodiment Referring now in detail to the drawing, specifically to Figs. 1 and 2, a tamperproof cap indicated generally by the reference numeral 10 is shown affixed to~a bottle 12.
The cap 10 comprises a cap body 14, a tamperproof ring 16 and a suitable number of breakable connectors 18, best seen in Fig. 2. The entire cap 10 is advantageously fabricated from a sultable resinous plastics material such as poly-ethylene or acrylonitrile-butadiene-styrene polymers.
With reference to Figs. 3 and 4, the bottle 12 has a neck portion 20 having an external thread 22 formed thereon. In addition, a suitable number of triangular ratchet teeth 24 are fashioned on the outside surface of the bottle .

~ 3~8Ql neck beneath the thread 22 and extending radially outwardly from the neck. While a single ratchet tooth may be employed, it is preferred to have a plurality of such teeth and to arrange these teeth in two or more ratchet sections as is shown in Fig. 4.
In order that the cap 10 may be locked onto the neck of bottle 12, a number of circumferentially spaced, triangularly shaped pawls 26 are provided on the inside surface o~ the ring 16 to extend radially inwardly for engaging one or more of the ratchet teeth 24. It will be appreciated that when the cap 10 is turned in the direction indicated by arrow 28, the pawls 26 will ride over the teeth 24; and in compl:Lance with a ~eature of the present invention, the ring 16 includes outwardly bending portions 30 disposed between the pawls 26, These portions 30 are arranged to be relatively thin.and more flexible than the pawls 26 to facilitate the riding action of the pawls over the ratchet teeth. The cap body is arranged with an internal thread 32 to coact with the bottle thread 22 so that turning of the cap 10 in the direction of arrow 28 relative to the bottle is in the direction of closing, that is, turning the cap into assembly with the bottle. Thus, the cap body 14 may be assembled to the bottle 12 in continuation of the cap body being coupled to the ring 16.
In order to insure that the pawls 26 can be engaged in a full locked relationship with the ratchet teeth 24 and to prevent the contents of the bottle 12 from being tampered with, ~ 3 8 ~ ~ ~
the breakable connectors 18 are joined to the cap body and the pawls 26, as is shown in Fig. 2. The connectors 18 thus provide both interruptable connections between the cap body and the ring and define pivot points about which the pawls 26 may rock in passing over the ratchet teeth 24 dllring assembly of the cap and the bottle. Furthermore9 the break-able connectors 18 hold the pawls 26 in engagement with the ratchet teeth upon turning in the opposite direction, whereby to prevent the pawls from riding out of engagement with the ratchet teeth. Vertical ribbing or knurling 34 is fashioned on the outside side wall of the cap body 14 as an ~id in transmitting full torque to the connectors 18 on unscrewing the cap Thls helps to break the connectors cleanly without leaving a jagged projection which might prove a hazard to a person's fingers.
The breakable connectors 18 desirably comprise angularly disposed arms and may be provided with a semi-circular cross-section, the flattened side facing in an upward direction. The connectors 18 are also of lesser di-mension axially of the cap 10 than are the pawls 26. Con~tinuing with reference to Fig. 2, each of the pawls 26 is fashioned with a first planar surface 36 facing generally in the direction that the cap is unscrewed, that is, gener-ally toward the pointed tips of the ratchet teeth 24. In addition, each of the pawls 26 is provided with a second planar surface 38 which faces generally in the opposite direction The connectors 18 are joined to the pawls 26 ~ )313~
at a point about midway of the surface 38, and in order to promote clean breaking of the connectors 18, they are angled back from the surface 38 at an angle of about seventy-five degrees.
An annular sealing apron 40 may be provided on the underside of the top plate of the cap body 14 to cooperate with the lip of the bottle as is shown in Fig. 3.
In use, the cap 10 is turned onto the neck portion of a filled bottle 12 in conventional manner, the pawls 26 riding over the ratchet teeth 24 with the surfaces 38 in engagement with the ratchet teeth. At some later time when it is desired to gain access to the contents of the bottle, the cap body 14 will be grasped and rotated in a direction to unseat the cap thread 32 from the bottle thread 22 Upon transmission of sufficient torque, with the surfaces 36 of the pawls in engagement with the ratchet teeth 24, the connec-tors 18 will be broken and the ring 16 will drop away prov-lding a visual indication that the bottle has been opened. The cap body 14 may then be twrned off the bottle and used afterwards as a reclosure. Of course, the ring 16 may be discarded if desired.
The drawings and the foregoing descriptions are not intended to represent the only forms of the invention in regard to the details of its construction and manner of operation. Changes in form and in the proportion of parts, as well as the substitution of equivalents, are contemplated -~ 5:3388~
as circumstances may suggest or render expedient; and although specific terms have been employed9 they are intended in a generic and descriptive sense only and not for the purposes of limitation, the scope of the invention being delineated in the following claims.

Claims

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A tamperproof cap for use with a container having a threaded neck portion and at least one external tooth, said cap comprising: an internally threaded cap body; a tamperproof ring having a plurality of circumferentially spaced, radially in-wardly extending, triangularly shaped pawls for locking engage-ment with said container tooth in a first direction of rotation and riding over said container tooth in a second, opposite direction of rotation; and a plurality of breakable connectors coupling said ring to said cap body, said connectors being individually joined to said pawls for holding a said pawl in engagement with said container tooth whereby to insure breaking of said connectors and releasing said ring from said cap body upon rotation of said cap in said first direction, said ring being undulated by outwardly bending portions disposed between said pawls, said portions being relatively more flexible than said pawls to permit said pawls to ride over said container tooth in said second direction.
CA217,396A 1974-01-30 1975-01-06 Tamperproof cap Expired CA1038801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US437778A US3874540A (en) 1974-01-30 1974-01-30 Tamperproof cap

Publications (1)

Publication Number Publication Date
CA1038801A true CA1038801A (en) 1978-09-19

Family

ID=23737844

Family Applications (1)

Application Number Title Priority Date Filing Date
CA217,396A Expired CA1038801A (en) 1974-01-30 1975-01-06 Tamperproof cap

Country Status (5)

Country Link
US (1) US3874540A (en)
CA (1) CA1038801A (en)
DE (1) DE7501765U (en)
FR (1) FR2259025B1 (en)
GB (1) GB1457991A (en)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131212A (en) * 1977-03-28 1978-12-26 Airfix Industries Limited Containers
IE47346B1 (en) * 1977-09-19 1984-02-22 Ug Closures & Plastics Ltd Closure cap for containers
EP0008190A1 (en) * 1978-08-03 1980-02-20 Plysu Limited Pilferproof closure
US4197955A (en) * 1978-10-26 1980-04-15 Ethyl Products Company Tamper-proof closure
US4225050A (en) * 1979-05-21 1980-09-30 Segen Industries, Inc. Tamper-proof bottle caps and method of forming same
US4354609A (en) * 1980-01-09 1982-10-19 Hidding Walter E Snap-on tamperproof bottle cap
US4278180A (en) * 1980-01-24 1981-07-14 Aluminum Company Of America Container closure with breakable annular ring
US4380299A (en) * 1980-09-10 1983-04-19 Precision Plastic Products Corporation Tamper proof closure
US4333577A (en) * 1980-09-15 1982-06-08 Owens-Illinois, Inc. Tamperproof closure
US4448318A (en) * 1982-08-20 1984-05-15 The West Company Tamper evident container-closure assembly
US4534480A (en) * 1984-06-01 1985-08-13 Sun Coast Plastics, Inc. Tamper evident closure
US4572389A (en) * 1984-11-05 1986-02-25 Sunbeam Plastics Corporation Tamper indicating screw cap with satellite ring
US4609115A (en) * 1985-05-15 1986-09-02 Phoenix Closures, Inc. Tamper-evident closure and bottle assembly
US4602718A (en) * 1985-05-31 1986-07-29 Sun Coast Plastics, Inc. Dual-operation tamper-evident band for closures
US4746035A (en) * 1986-12-08 1988-05-24 Calmar, Inc. Liquid dispenser having a tamperproof overcap
US4749095A (en) * 1987-05-28 1988-06-07 Owens-Illinois Closure Inc. Tamper-indicating closure and package
FR2618128B1 (en) * 1987-07-17 1990-01-19 Astra Plastique SCREW PLUG, WITH SECURITY BELT, IN RIGID PLASTIC MATERIAL FOR CONTAINER WITH THREADED NECK
US4801029A (en) * 1988-02-09 1989-01-31 Continental White Cap, Inc. Tamper evident cap
US4930647A (en) * 1989-01-24 1990-06-05 Continental Plastics, Inc. Tamper indicating closure system utilizing axially extending ratchet
FR2655953B1 (en) * 1989-12-15 1992-02-21 Cebal IMPROVEMENT IN THE CAPPING OF CONTAINERS WITH CAPSULE WITH SCREW CAPS AND WITH REMOVABLE GUARANTEE STRIP.
US5213224A (en) * 1990-08-09 1993-05-25 Portola Packaging, Inc. Snap-on, screw-off cap and container neck
US5415306A (en) * 1990-08-09 1995-05-16 Portola Packaging, Inc. Foil lined snap-on, screw-off closure and container neck
US5267661A (en) * 1990-08-09 1993-12-07 Portola Packaging, Inc. Snap-on, screw off cap and container neck
US5975321A (en) * 1990-08-09 1999-11-02 Portola Packaging, Inc. Snap-on, screw-off cap with tamper-evidencing skirt and container neck
US20050269282A1 (en) * 1990-08-09 2005-12-08 Portola Packaging, Inc. Tamper-evident cap and container neck
US5456376A (en) * 1990-08-09 1995-10-10 Portola Packaging, Inc. Snap-on, screw off cap and container neck
US5056675A (en) * 1991-01-18 1991-10-15 Sunbeam Plastics Corporation Tether web ratchet drive tamper indicating band closure
ES2055941T3 (en) * 1991-05-22 1994-09-01 Guala Spa INVIOLABLE SEAL FOR BOTTLES AND SIMILAR.
EG21314A (en) 1992-07-16 2000-10-31 Driutt Rodney Malcolm Tamper evident closure
DE9210306U1 (en) * 1992-07-31 1993-01-21 Dürrmann GmbH & Co. KG, 85560 Ebersberg Plastic container
GB2295143B (en) * 1995-03-03 1998-04-22 Massmould Holdings Closure device
US6253937B1 (en) 1995-06-06 2001-07-03 Raymond G. Anderson Snap top, easy pouring dispensing cap
US6073809A (en) * 1996-02-15 2000-06-13 International Plastics And Equipment Corporation Snap-on tamper evident closure with push-pull pour spout
US5862953A (en) * 1996-04-16 1999-01-26 International Plastics And Equipment Corporation Tamper evident push-pull closure with pour spout
PT912412E (en) * 1996-05-06 2000-12-29 Hoffmann Neopac Ag THREAD CAPSULE
AUPO788597A0 (en) 1997-07-14 1997-08-07 Closures And Packaging Services Limited Closure
DE69822493T2 (en) * 1997-10-30 2004-12-23 International Plastics And Equipment Corp. SCREW-ON AND SNAP LOCK
ATE243643T1 (en) * 1998-02-16 2003-07-15 Obrist & Co Ag H CONTAINER CLOSURE ARRANGEMENT WITH GUARANTEE ELEMENT
GB2357279A (en) * 1999-11-16 2001-06-20 Merck & Co Inc A screw-on, twist-off, tamper-evident cap that is easy to open
WO2004065243A1 (en) * 2003-01-22 2004-08-05 MØLLER, Claus, Schmidt A locking arrangement for a container with a cap
DE102005022952B3 (en) * 2005-05-19 2007-03-29 Khs Ag Combination of a tamper-evident closure with a container opening
US8132684B2 (en) * 2005-07-14 2012-03-13 Rexam Prescription Products Inc. Child-resistant closure, package and method of making
US7581652B2 (en) * 2005-08-09 2009-09-01 Rexam Closure Systems Inc. Tamper-indicating package, and a closure and container for such a package
NZ554715A (en) * 2007-04-23 2010-02-26 Vin Singlz Ltd Improvements in and relating to tamper evident seals
US20120031871A1 (en) * 2010-08-04 2012-02-09 Omega Cap Soultions LLC Step twist zipped visual tamper-evident cap and neck finish
US11883169B2 (en) * 2018-04-05 2024-01-30 Innovero Llc Opener for secure sample collection bottle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1432215C3 (en) * 1964-09-15 1973-10-11 Merck Patent Gmbh, 6100 Darmstadt Original screw cap assembly
US3504818A (en) * 1968-11-25 1970-04-07 Harry Crisci Tamper proof bottle closure

Also Published As

Publication number Publication date
DE7501765U (en) 1975-05-07
FR2259025A1 (en) 1975-08-22
GB1457991A (en) 1976-12-08
US3874540A (en) 1975-04-01
FR2259025B1 (en) 1980-10-31

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