WO1981003649A1 - Child resistant container cover - Google Patents

Child resistant container cover Download PDF

Info

Publication number
WO1981003649A1
WO1981003649A1 PCT/US1981/000837 US8100837W WO8103649A1 WO 1981003649 A1 WO1981003649 A1 WO 1981003649A1 US 8100837 W US8100837 W US 8100837W WO 8103649 A1 WO8103649 A1 WO 8103649A1
Authority
WO
WIPO (PCT)
Prior art keywords
neck portion
cap
threads
closure
container
Prior art date
Application number
PCT/US1981/000837
Other languages
French (fr)
Inventor
L Wiles
B Eibensteiner
Iii F Page
Original Assignee
Ethyl Prod
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 Ethyl Prod filed Critical Ethyl Prod
Priority to AU74175/81A priority Critical patent/AU7417581A/en
Publication of WO1981003649A1 publication Critical patent/WO1981003649A1/en

Links

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
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/06—Threaded or like caps or cap-like covers secured by rotation with bayonet cams, i.e. removed by first pushing axially to disengage the cams and then rotating
    • 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
    • B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
    • B65D50/02—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions
    • B65D50/04—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one
    • B65D50/043—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one the closure comprising a screw cap whose threads are shaped to accommodate blocking elements and the closure is removed after first applying axial force to unblock it and allow it to be unscrewed

Definitions

  • This invention is in the. field of closures for containers for consumer products. More particularly, the invention deals with closure devices for achieving child resistant, characteristics. Background and Prior Art
  • Exemplary of the containers and closures developed by the art in response to this need is the closure and container shown in U. S. Patent No. 3,888,376.
  • This container and closure is in the class of child-resistant packages which feature latching and unlatching means carried by the threads of the closure and the container.
  • this class is beset by the problem of requiring very exact container and closure manufacture so that registration of the latching structure can be predictably effected.
  • the manufacturing standards required are oftentimes difficult to achieve when it is considered that the packager oftentimes purchases the containers from sources separate from the closures; Despite these difficulties, however, this class of child-resistant closure and container is highly desirable in that the locking mechanism is carried internal to the package when the closure is fitted to the container.
  • Other classes of child-resistant closures and containers which rely upon exterior, locking systems oftentimes are not entirely satisfactory as a child is free to attack the locking structure.
  • a safety closure for containers comprising a threaded neck portion, a cap provided with a multiplicity of threads cooperatively engaging the threads on the neck portion, means connected to the threaded neck portion for stopping the threading rotation of the cap onto the threaded neck portion at a predetermined position, and resilient liner means interposed between the underside of the top of the cap and the top of the neck portion.
  • An advantage of the container and closure of this invention is a low application torque, ability to give a tight seal, and easy opening for adults.
  • a disc liner acts as both a spring to maintain required vertical pressure and seal against a vacuum and normal environmental atmosphere.
  • Another advantage is that an odd shaped cap can be oriented to match a conforming container, e.g., a square cap can be aligned with the sides of a square container.
  • FIGURE 1 is a top view of a container of this invention
  • FIGURE 2 is a side view of a container of this invention
  • FIGURE 3 is a cross-sectional view of a closure of this invention
  • FIGURE 4 is a bottom view taken of the closure shown in Figure 3
  • FIGURE 5 is a side view of the closure shown in Figure 2 rotated to show another view of the threads
  • FIGURE 6 Is a partly cut-away side elevational view of the closure attached to the container shown
  • FIGURE 7 is an enlarged, cut-away, partly sectional view of the top of the neck of the container.
  • a conventional container 10 is provided which, while preferably made of plastic, may be made of glass or suitable material.
  • the container has the usual neck portion 11 provided with threads 12 and 12a which, when the container is made of plastic, may be molded. Threads 12 and 12a have trailing edges 17 and 17a., respectively, which are generally parallel to the center line of the closure.
  • the two threads 12a have a stop 13 at the end thereof which together with surface 17a define gap 13a. whereas the two threads 12 do not have a stop at the end thereof, although they do have surface 17 which contacts surface 16a in the locked position.
  • the closure of cap 14 has four harpoon-shaped threads 15 equally spaced at approximately 90 degrees apart.
  • the harpoon-shaped threads 15 have an arrowhead portion 16 thereon, the surface 16a behind the arrowhead 16 being generally parallel to. the centerline of the closure and being designed to interlock in gap 13a as shown in Figure 6 In the "ghosted" thread 15.
  • the surface line of the top l6b of arrowhead portion 16 is generally parallel to the bottom 12b of threads 12 and 12a to reduce thread damage, as is the tail of thread 15.
  • the top of the neck has the usual bearing surface 18.
  • the underside of cap 14 has a depressed top portion 19 which can be molded in the cap when it is made of plastic or embossed in the cap when the cap is made of metal.
  • Liner 20 Lying between the top 18 of the neck 11 and the depressed portion of the cap 14 is a liner 20.
  • Liner 20 is made of some suitable resilient material which in conjunction with the depressed portion 19 of cap 14 seals the top 18 of container 10 to prevent any fluids flowing therefrom.
  • the top 18 of container 10 preferably includes a sealing surface 18a (see Figure 7).
  • Sealing surface 18a includes a flat portion 18b and a curved or radiused surface 18c. Both 18b and 18c cooperate to assure a tight seal.
  • closures made in accordance with the invention can be attached to the container with a torque as low as 10 to 12 inch-pounds.
  • the leading edge of the threads 12a and 12 have a tapered surface 21 which acts in conjunction with arrowhead portion 16 of threads 15 to insure ease of threading.
  • the present invention provides a one-piece safety closure obtaining a positive lock against inadvertent opening.
  • sealing bands 25 and 26 are provided at the bottom of neck 11. These sealing bands 25 and 26 provide several functions. They help prevent the container from. going out-of-round during high application torques and they serve as a bacteria baffle. As can be seen from the above, an odd-shaped container having a corresponding odd-shaped cap is feasible In accordance with the present invention because the cap can be oriented and aligned with the sides of the container to make the combined cap and container symmetric and esthetically pleasing. For example, a square cap can be fitted to a square container by positioning stops 13-13 in the appropriate place on neck 11.

Abstract

A safety closure for containers comprising a container with a threaded neck portion (11), a cap (14) provided with a multiplicity of threads (15) cooperatively engaging the threads (12, 12a) on the neck portion, means connected to the threaded neck portion for stopping the threading rotation of the cap onto the threaded neck portion at a predetermined position, and resilient liner means (20) interposed between the underside of the top of the cap and the top of the neck portion.

Description

CHILD RESISTANT CONTAINER COVER
Field of the Invention
This invention is in the. field of closures for containers for consumer products. More particularly, the invention deals with closure devices for achieving child resistant, characteristics. Background and Prior Art
Many child-resistant caps and closures have been suggested in recent years because of the greater activity directed towards insuring that dangerous and poisonous materials be packaged in containers which are significantly difficult for small children to open.
Exemplary of the containers and closures developed by the art in response to this need is the closure and container shown in U. S. Patent No. 3,888,376. This container and closure is in the class of child-resistant packages which feature latching and unlatching means carried by the threads of the closure and the container. Generally, this class is beset by the problem of requiring very exact container and closure manufacture so that registration of the latching structure can be predictably effected. The manufacturing standards required are oftentimes difficult to achieve when it is considered that the packager oftentimes purchases the containers from sources separate from the closures; Despite these difficulties, however, this class of child-resistant closure and container is highly desirable in that the locking mechanism is carried internal to the package when the closure is fitted to the container. Other classes of child-resistant closures and containers which rely upon exterior, locking systems oftentimes are not entirely satisfactory as a child is free to attack the locking structure.
Therefore, it is an object of this invention to provide a container and closure which is child-resistant, which is in the class of containers and closures which have the locking systems carried by the threads of the containers and closures, and which is able to achieve its child-resistant locking position when manufacturing tolerances are maintained. Furthermore, it is an object of the invention to provide a container and closure combination in which the closure can be oriented to a predetermined position on the container. Description of the Invention A safety closure for containers comprising a threaded neck portion, a cap provided with a multiplicity of threads cooperatively engaging the threads on the neck portion, means connected to the threaded neck portion for stopping the threading rotation of the cap onto the threaded neck portion at a predetermined position, and resilient liner means interposed between the underside of the top of the cap and the top of the neck portion.
An advantage of the container and closure of this invention is a low application torque, ability to give a tight seal, and easy opening for adults. A disc liner acts as both a spring to maintain required vertical pressure and seal against a vacuum and normal environmental atmosphere. Another advantage is that an odd shaped cap can be oriented to match a conforming container, e.g., a square cap can be aligned with the sides of a square container.
These and other features contributing to satisfaction in use and economy in manufacture will be more fully understood from the following description of a preferred embodiment of the invention when taken in connection with the accompanying drawings wherein identical numerals refer to identical parts and in which: FIGURE 1 is a top view of a container of this invention; FIGURE 2 is a side view of a container of this invention; FIGURE 3 is a cross-sectional view of a closure of this invention; FIGURE 4 is a bottom view taken of the closure shown in Figure 3; FIGURE 5 is a side view of the closure shown in Figure 2 rotated to show another view of the threads; FIGURE 6 Is a partly cut-away side elevational view of the closure attached to the container shown; and, FIGURE 7 is an enlarged, cut-away, partly sectional view of the top of the neck of the container. Referring now to the drawings, a conventional container 10 is provided which, while preferably made of plastic, may be made of glass or suitable material.
The container has the usual neck portion 11 provided with threads 12 and 12a which, when the container is made of plastic, may be molded. Threads 12 and 12a have trailing edges 17 and 17a., respectively, which are generally parallel to the center line of the closure.
As can be seen in the drawings, the two threads 12a have a stop 13 at the end thereof which together with surface 17a define gap 13a. whereas the two threads 12 do not have a stop at the end thereof, although they do have surface 17 which contacts surface 16a in the locked position.
The closure of cap 14 has four harpoon-shaped threads 15 equally spaced at approximately 90 degrees apart. The harpoon-shaped threads 15 have an arrowhead portion 16 thereon, the surface 16a behind the arrowhead 16 being generally parallel to. the centerline of the closure and being designed to interlock in gap 13a as shown in Figure 6 In the "ghosted" thread 15. The surface line of the top l6b of arrowhead portion 16 is generally parallel to the bottom 12b of threads 12 and 12a to reduce thread damage, as is the tail of thread 15. The top of the neck has the usual bearing surface 18. The underside of cap 14 has a depressed top portion 19 which can be molded in the cap when it is made of plastic or embossed in the cap when the cap is made of metal. Lying between the top 18 of the neck 11 and the depressed portion of the cap 14 is a liner 20. Liner 20 is made of some suitable resilient material which in conjunction with the depressed portion 19 of cap 14 seals the top 18 of container 10 to prevent any fluids flowing therefrom.
The top 18 of container 10 preferably includes a sealing surface 18a (see Figure 7). Sealing surface 18a includes a flat portion 18b and a curved or radiused surface 18c. Both 18b and 18c cooperate to assure a tight seal. In assembling the closure to the neck of the container it is merely necessary to manually turn the closure in a manner to screw the closure onto the neck of the container. Closures made in accordance with the invention can be attached to the container with a torque as low as 10 to 12 inch-pounds. The leading edge of the threads 12a and 12 have a tapered surface 21 which acts in conjunction with arrowhead portion 16 of threads 15 to insure ease of threading. When the closure is fitted on the neck of the container and released, the action caused, by the depressed member 19 bearing on the liner 20 will cause the cap to move to a slight degree upwardly to securely lock the arrowhead portion 16 in gap 13a. In order to open the closure it is necessary to exert a downward pressure against the action of the member. 19 and the liner 20 whereupon the arrowhead 16 will be forced downward and out of gap 13a and in the same movement the closure may be turned to unscrew the closure from the neck of the container. Thus, it may be seen that the present invention provides a one-piece safety closure obtaining a positive lock against inadvertent opening.
Preferably two sealing bands 25 and 26 are provided at the bottom of neck 11. These sealing bands 25 and 26 provide several functions. They help prevent the container from. going out-of-round during high application torques and they serve as a bacteria baffle. As can be seen from the above, an odd-shaped container having a corresponding odd-shaped cap is feasible In accordance with the present invention because the cap can be oriented and aligned with the sides of the container to make the combined cap and container symmetric and esthetically pleasing. For example, a square cap can be fitted to a square container by positioning stops 13-13 in the appropriate place on neck 11.
While the invention has been described in detail in connection with one embodiment thereof, the description and illustration are in no way intended to limit the scope of the invention.

Claims

Claims
1. A safety closure for containers including a. a threaded neck portion (11) on said container (10), and b. a cap (14) having a plurality of threads (15) having arrowhead-shaped portions (16) at one end thereof c. means on said-threaded neck portion (11) for stopping the threading rotation of said cap
(14), said means including a gap (13a) on at least two of said threads on said neck portion (11) said gap being defined by, i. a raised stop (13) at the end of at least two of said threads (12a) on said neck portion (11) against which at least two of said threads (12a) on said cap (14) strike when said cap (14) is threaded onto said neck portion and by, ii. the end (17a) of said threads (12a) on said neck portion and d. resilient liner means (20) interposed between the underside of the top (19) of. said cap (14) and the top (18) of said neck portion (11).
2. A closure according to Claim 1 further characterized in that the trailing surface (16a) behind each arrowhead portion (16) is generally parallel to the centerline of said closure and is adapted to interlock in said gap (13a).
3. A closure according to Claim 1 or 2 further characterized in that said cap (14) has a depressed portion (19) on the top thereof which strikes the liner (20) when said cap (14) is screwed onto the said threaded neck portion (11) .
4. A closure according to Claim 3 further defined in that the threaded neck portion has a sealing top (18) including a flat, circular upward facing portion (18b) and a downwardly curved inner portion (18c) adjacent, thereto.
5. A closure according to any of Claims 1 to 4 further defined. in that the leading end (21) of each thread (12) is bevelled toward the body of the neck portion (11) .
6. A cap for the closure of any of Claims 1 to 5 further characterized by having a multiplicity of threads having an arrowhead-shaped portion (15) at the leading end thereof adapted to engage the stop means (13) of the ends of at least two threads on a container neck portion (11) .
7. A container for a safety closure as defined in any of Claims 1 to 5.
PCT/US1981/000837 1980-06-19 1981-06-17 Child resistant container cover WO1981003649A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74175/81A AU7417581A (en) 1980-06-19 1981-06-17 Child resistant container cover

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16113080A 1980-06-19 1980-06-19
US161130 1980-06-19

Publications (1)

Publication Number Publication Date
WO1981003649A1 true WO1981003649A1 (en) 1981-12-24

Family

ID=22579951

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1981/000837 WO1981003649A1 (en) 1980-06-19 1981-06-17 Child resistant container cover

Country Status (4)

Country Link
EP (1) EP0042603A1 (en)
JP (1) JPS57500973A (en)
CA (1) CA1167413A (en)
WO (1) WO1981003649A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455440A (en) * 1981-11-19 1984-06-19 Sumitomo Chemical Company, Limited Method for producing 1,3,5-triisopropylbenzene trihydroperoxides
DE3309336A1 (en) * 1983-03-16 1984-09-20 Zeller Plastik Koehn, Gräbner & Co, 5583 Zell Seal with multiple screw thread

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126565B (en) * 1982-08-11 1985-11-13 U G Closures And Plastics Limi Screw-capped container
DK171176B1 (en) * 1993-04-07 1996-07-15 Arne Bendix Nielsen Container with a child-proof, cup-shaped closure
US6848590B2 (en) * 2001-10-16 2005-02-01 Owens-Illinois Closure Inc. Child-resistant closure and container package
US7527159B2 (en) 2004-03-11 2009-05-05 Rexam Closure Systems Inc. Threaded child-resistant package having linerless closure
US7819264B2 (en) 2003-12-03 2010-10-26 Rexam Closure Systems Inc. Child-resistant closure, container and package
DE102013220492A1 (en) * 2013-10-10 2015-04-16 Aptar Radolfzell Gmbh Child-resistant discharge device
CH710517A2 (en) * 2014-12-19 2016-06-30 Aero Pump Gmbh Child-resistant cap with an associated container for liquid or pasty substances.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072276A (en) * 1960-04-21 1963-01-08 Celluplastics Inc Spring member for tamper proof vial
US3339770A (en) * 1965-07-12 1967-09-05 Tamper Proof Tops Ind Ltd Container closure
US3828957A (en) * 1972-08-02 1974-08-13 Ethyl Dev Corp Container with safety closure
US3880313A (en) * 1968-03-04 1975-04-29 Edward G Akers Safety cap and container
US3888376A (en) * 1974-06-13 1975-06-10 Cwc Ind Safety closure cap for containers
US3927783A (en) * 1974-01-28 1975-12-23 Clayton Bogert Safety closure for containers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1528549A (en) * 1966-06-23 1968-06-07 Tamper Proof Tops Ind Ltd Safety closures for containers containing drugs or dangerous substances
US3802590A (en) * 1972-05-22 1974-04-09 Bernardin Inc Linerless container closure
JPS5214494B2 (en) * 1973-08-14 1977-04-22
US3952899A (en) * 1974-06-13 1976-04-27 Cwc Industries Safety closure cap
US4032018A (en) * 1975-11-21 1977-06-28 Wallis Bernard J Workpiece transfer mechanism
US4053077A (en) * 1976-10-19 1977-10-11 Defelice Amedio Child safety cap

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072276A (en) * 1960-04-21 1963-01-08 Celluplastics Inc Spring member for tamper proof vial
US3339770A (en) * 1965-07-12 1967-09-05 Tamper Proof Tops Ind Ltd Container closure
US3880313A (en) * 1968-03-04 1975-04-29 Edward G Akers Safety cap and container
US3828957A (en) * 1972-08-02 1974-08-13 Ethyl Dev Corp Container with safety closure
US3927783A (en) * 1974-01-28 1975-12-23 Clayton Bogert Safety closure for containers
US3888376A (en) * 1974-06-13 1975-06-10 Cwc Ind Safety closure cap for containers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455440A (en) * 1981-11-19 1984-06-19 Sumitomo Chemical Company, Limited Method for producing 1,3,5-triisopropylbenzene trihydroperoxides
DE3309336A1 (en) * 1983-03-16 1984-09-20 Zeller Plastik Koehn, Gräbner & Co, 5583 Zell Seal with multiple screw thread

Also Published As

Publication number Publication date
JPS57500973A (en) 1982-06-03
CA1167413A (en) 1984-05-15
EP0042603A1 (en) 1981-12-30

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