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.

Landscapes

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

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=22579951

Family Applications (1)

Country Status (4)

Cited By (2)

Families Citing this family (7)

Citations (6)

Family Cites Families (6)

• 1981
  • 1981-05-20 CA CA000377919A patent/CA1167413A/en not_active Expired
  • 1981-06-17 WO PCT/US1981/000837 patent/WO1981003649A1/en unknown
  • 1981-06-17 JP JP56502407A patent/JPS57500973A/ja active Pending
  • 1981-06-19 EP EP81104733A patent/EP0042603A1/en not_active Withdrawn

Patent Citations (6)

Also Published As

Similar Documents

Legal Events