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US3782575A - Safety closure - Google Patents

Safety closure Download PDF

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Publication number
US3782575A
US3782575A US3782575DA US3782575A US 3782575 A US3782575 A US 3782575A US 3782575D A US3782575D A US 3782575DA US 3782575 A US3782575 A US 3782575A
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Prior art keywords
closure
safety
container
disc
position
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T Braun
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T Braun
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    • 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
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0204Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0208Removable lids or covers without integral tamper element secured by snapping over beads or projections on both the inside and the outside of the mouth of the container
    • 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
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0204Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • 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
    • B65D50/00Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
    • B65D50/02Closures 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
    • B65D50/04Closures 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. depress and turn, lift and turn, maintain a part and turn another one
    • B65D50/045Closures 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. depress and turn, lift and turn, maintain a part and turn another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00064Shape of the outer periphery
    • B65D2543/00074Shape of the outer periphery curved
    • B65D2543/00092Shape of the outer periphery curved circular
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00231Overall construction of the lid made of several pieces
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00277Metal
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00296Plastic
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00314Combination, e.g. laminates, several different materials
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00342Central part of the lid
    • B65D2543/0037Flexible or deformable
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00518Skirt
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00527NO contact
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00555Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00611Profiles
    • B65D2543/00648Flange or lip
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00675Periphery concerned
    • B65D2543/00685Totality
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00722Profiles
    • B65D2543/0074Massive bead
    • 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
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
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    • B65D2543/00787Periphery concerned
    • B65D2543/00796Totality
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00824Means for facilitating removing of the closure
    • B65D2543/00935Means for facilitating removing of the closure by depressing the central part at least locally

Abstract

A safety closure for a container having an annular lip and a shoulder adjacent the lip. The closure includes a unitary cap, having a rim and a dome, and a snap-action disc which is coupled to the cap. The rim of the unitary cap includes a locking projection which engages the lip on the container. The closure is placed in an unlocked position by applying a downward force to the snap-action disc to change the disc from a convex position to a concave position.

Description

United States Patent 1191 Braun Jan. 1, 1974 [5 SAFETY CLOSURE 3,484,016 12/1969 Turner 220/60 A [76] Inventor: Thomas A. Braun, 916 Whitegate Dr Mt Prospect, In. 60025 Primary Exammer-George T. Hall Att0rneyCharles E. Quarton [22] Filed: Mar. 6, 1972 ABSTRACT A safety closure for a container having an annular lip 152 US. Cl 215/9, 215/41, 215/46 R, and a shoulder adiaeent the The closure includes a 220/60 A unitary cap, having a 'rim and a dome, and a snap- [51 Int. Cl B65d 55/02 aetieh diee which is ceupled t9 the The rim of the 58 Field of Search 215/9, 41, 46 R; unitary p includes a locking Projection which 220/60 A gages the lip on the container. The closure is placed in an unlocked position by applying a downward force to [56] R f n Cit d the snap-action disc to change the disc from a convex UNITED STATES PATENTS position to a concave position.

3,559,843 2/1971 Kern 220/60 A 10 Claims, 7 Drawing Figures PATENTEUJAN H974 SHEET 1 BF 2 Illlll Pmmgnm nan same or 2 SAFETY CLOSURE The invention relates to a safety closure for a con- 7 tainer to prevent opening of the closure by one class of persons while permitting another class of persons to open easily the closure.

The safety closure is useful in preventing young children from removing the closure from the container and obtaining access to the contents which could be harmful or poisonous to the child. However, the safety closure can be easily opened by an adult or an older child who is aware of the harmful nature of the contents. Thus, a purpose of the invention is to provide a safety closure for a container which is extremely difficult for a child to unlock while being easy for an adult to unlock.

More particularly, the invention relates to a safety closure for an open-ended container having an annular lip at the open end of the container and a shoulder adjacent the lip. The closure includes a unitary cap having an annular rim and a dome. The rim has a locking projection extending inwardly therefrom for engaging the lip of the container in a locked position of the closure. The dome has a fulcrum means for engaging the shoulder of the container and pivoting the locking projection outwardly from the lip to an unlocked position of the closure. A snap-action disc is coupled to the cap and is convex when the closure is in the locked position. This disc is concave when the closure is in the unlocked position and depresses the dome of the cap when it is in the concave position.

In order to operate the safety closure a downward force is applied to the snap-action disc and the dome of the cap is depressed. This causes the locking projection to pivot away from engagement with the lip on the container thereby causing the safety closure to assume an unlocked position. The mode of operating the safety closure can be indicated by a legend on the closure.

An advantage to the invention is that for a person able to read little effort is required to learn how to operate the safety closure. At the same time, a person unable to read, such as a young child cannot learn to open the safety closure.

Another advantage to the invention is that the strength of the downward force which is necessary to move the disc to the unlocked position can be varied to effectively vary the age at which a child can successfully unlock the safety closure. This results from the consequence that in general younger children, as a class, have less strength than older children, as a class.

The design of the safety closure does not permit a person to grasp the closure and forcibly remove it from the container when the safety closure is in a locked po sition. This feature protects against the container being forced open by a person otherwise unable to operate the safety closure; The safety closure is also protected from accidental opening bypressing of the top of the closure against a surface such as a table top or a wall.

One form of the invention is demonstrated in the drawings in which: 7

FIG. 1 is a partially cut-away view of a safety closure and container embodying the present invention;

FIG. 2 is a sectional view ofthe safety closure shown in FIG. ll;

FIG. 3 is a sectional view of the container shown in FIG. 1;

FIG. 4 is a sectional view of the safety closure of FIG. 1, in an unlocked position;

FIG. 5 is a sectional view of a modified container for practicing the present invention;

FIG. 6 is a sectional view of another form of safety closure having a moisture barrier and a container embodying the present invention; and

FIG. 7 is a sectional view of another form of safety closure and container embodying the present invention.

Referring to FIG. ii, a safety closure indicated generally by thenurneral 10 is shown assembled onto a con tainer 12. The safety closure ll) includes a unitary cap 14 having a rim l6 and a dome 1181. The safety closure 10 also includes a snap-action disc 20 which engages a retaining groove 22 on the interior surface of the rim 16.

The rim 16 of the cap 14 has an annular locking projection 24 which extends inwardly from the rim l6. The locking projection 24 engages an annular lip 26 located at the open end of the container 12. The container 12 has a shoulder 28 positioned adjacent the lip 26. The unitary cap 14 includes an annular bead 30 which is lo cated on the dome 18 of the cap. The annular head 30 engages the shoulder 28 of the container 12 and serves as a fulcrum means to pivot the locking projection 24 away from engagement with the lip 26 in a manner to be described.

The safety closure 10 is shown in FlG. l in a locked position on the container 12. In the locked position, the snap-action disc 204s in a convex configuration and the locking projection 24 engages the lip 26 to prevent the closure 10. from being removed from the container 12. In order to place the safety closure m in an unlocked position, a downward force is applied to the snapaction disc 20 thereby moving the disc downward and depressing the dome 18 of the unitary cap 1d. As the dome 18 is depressed downward, the rim 1h pivots about the annular bead 30 and releases the locking projection 24 from engagement with the lip 26.. The snap action property of the disc 2% causes the disc to remain in the concave position shown in FIG. i thereby holding the safety closure 10 in an unlocked position. The closure 10 can then be removed by lifting it from the container 12. This operation can be performed by a person using only one hand.

To return the safety closure M) to a locked position on the container 12, the safety closure l0 is placed on the container 12 and a downward force is applied to the rim 16 of the unitary cap 14. The downward force on the rim 16 pivots the locking projection '24 into engagement with the lip 26 and returns the snap-action disc 20 to the convex configuration of the locked position shown in FIG. 2.

The mode of operating the safety closure W can be indicated by a legend such as press here located on the snap-action disc 20 of the safety closure. This legend. would inform a. person able'to read, such as an adult, how to operate the safety closure while concealing the method of operation from a young child who is unable to read. Also, themode of operation permits an adult to learn with little effort how to operate the safety closure.

The annular bead 30 on the dome 18 is illustrated as being continuous. However, the bead may be interrupted if desired as. long as the contact area of the head 30 with the shoulder 28 is sufficient to provide a fulcrum means against the shoulder 28 to remove the locking projection 24 from engagement with the lip 26. In a similar fashion, the locking projection 24 may be continuous as illustrated or may be interrupted.

The cap 14 is made of a flexible material to permit the dome 118 of the cap to be depressed when acted upon by the snap-action disc 20. Preferably, the unitary cap 14 is formed of a flexible plastic material. However, other flexible materials may be utilized to form the cap 14. The cap 14 may include a recessed portion 32 to facilitate flexing of the dome l8 duringmovement of the dome from the locked position to the unlocked position.

The snap-action disc 20 assumes either a convex configuration as shown in MG. 1 or a concave configuration as shown in MG. 4. The disc 20 will not assume a planar position and will remain only in the convex or concave configuration shown inFIGS. l and 4, respectively. Typically, the snap-action disc 20 is formed of a metal, although other materials which permit the snap-action effect can be utilized to form the disc.

The downward force required to move the snapaction disc 20 from the concave configuration of FIG. 1 to the convex configuration of FIG. 4 can be varied by varying the strength of the disc ZED. Thus, the force required to unlock the safety closure 10 can be increased to increase the degree of difficulty encountered in opening the safety closure. in this way, the age of the group of children which can successfully open the safety closure can be varied.

A head 34 may be located on the snap-action disc on the side of the disc adjacent the dome 18 of the cap 14. The bead 34 serves to concentrate the force of the snap-action disc 2% on the dome 18. However, the snap-action disc 2@ may be utilized without the bead 34. t

The rim 16 of the cap 14 extends above the level of the snap-action disc 20. This prevents accidental opening of the safety closure 10 since the top of the rim 16 prevents a surface from applying force to the snapaction disc 2t]. Therefore, inverting the safety closure 10 and container 12 and pressing the closure 10 against a surface such as a table will not result in opening of the safety closure ill. The smooth contour between the container 12 and the safety closure ill) as well as the in ward tapering of the rim l6 prevents the safety closure 10 from being readily grasped and removed from the container 12 when the closure is in a locked position. Additionally, the low profile of the safety closure 10 provides a small area for grasping the safety closure and removing the closure when it is in a locked position.

The container l2 illustrated in FlG. l is generally cylindrical in shape. However, other shapes of containers can be utilized in the practice of the invention. Referring to FIG. 5, a modified container 12a having a lip 26 and a shoulder 28 is illustrated. The annular lip 26 and the shoulder 28 are identical to the lip 26 and shoulder 28 of the container 12 shown in FIG. 3. The body 36 of the modified container 12a is larger than the mouth of the modified container and the body 36 need not be cylindrical. The container 12a is suitable for use with the safety closure 10 in practicing the invention as are other container configurations which include the lip 26 and the shoulder 28. The lip 26 and the shoulder 28 are required to cooperate with the safety closure 10 in the manner previously described.

Referring to FIG. s, a modified safety closure indicated generally by the numeral 10a and having an annular moisture barrier 38 is illustrated. in FIG. 6 the same reference numerals indicate the same parts as in the other Figures. The moisture barrier 38 extends downwardly from the dome 18 of the unitary cap 14a to engage an interior wall 40 of the container 12 and includes ribs 42. The ribs 42 contact the interior wall 40 to prevent moisture from entering the container 12 when the safety closure i011 is in a locked position. The operation of the safety closure We is the same as for the safety closure 10. Although a pair of ribs 42 are illustrated on the moisture barrier 38, other numbers of ribs 42 could be utilized.

Referring to FIG. 7, another modified safety closure, indicated generally by the numeral lllb, and a modified container 12b are illustrated. In FIG. 7., the same referr ence numerals indicate the same parts as in the other Figures. The safety closure Nib includes an annular extension 44 which extends downwardly from the dome 18 of the unitary cap 14b and has an .extemally threaded portion 36. The externally threaded portion 46 mates with an internally threaded portion 48 on the interior wall 4th of the modified container Mb.

The operation of the modified. safety closure 10b is similar to the operation of the safety closure 10. Initially, a downward force is applied to the snap-action disc 20 thereby moving the disc downward and depressing the dome 18 of the unitary cap 14b. As the dome 18 is depressed downward, the rim 16 pivots about the annular head 30 and releases the locking projection 24 in a manner similar to that shown for the safety closure 10 in FIG. 4. The snap-action property of the disc 20 causes the disc to remain in a concave position and hold the safety closure 10b in an unlocked position. The safety closure illlb is then removed from the container 122: by rotating the closure llib to release the threaded engagement between the safety closure 10b and the container 12b.

The safety closure 10b is returned to a locked position on the container lZb by rotating the safety closure 10b into threaded engagement with the container 12b. A downward force is then applied to the rim lid of the unitary cap and the safety closure lllllb moves to a locked position in a manner similar to that previously described for the safety closure ill).

It is to be understood that various modifications can be made to the disclosed safety closure and container without departing from the scope of the invention, and it is intended to cover in the appended claims all such modifications as fall within the true spirit and the scope of the invention.

What is claimed is:

l. A safety closure for an open-ended container having an annular lip at the open end thereof and a shoulder adjacent said lip said closure comprising:

a unitary cap having an annular rim and a dome;

said rim having a locking projection extending inwardly from the rim for engaging the lip of the container in a locked position of the closure;

said dome having fulcrum means for engaging the shoulder of said container and pivoting said locking projection outwardly from said lip to an unlocked position of the closure; and

a snap-action disc coupled to said cap, said disc being convex when the closure is in the locked position and being concave when the closure is in the unlocked position, said snap-action disc depressing the dome of said cap when said disc is in a concave position.

2. The safety closure of claim 1 wherein said rim extends above the snap-action disc when said disc is in the convex position to prevent accidental unlocking of the safety closure.

3. The safety closure of claim 2 wherein said rim mates with said container and tapers inwardly toward the top thereof to prevent grasping and removal of the closure when in the locked position.

4. The safety closure of claim 1 wherein said rim has a retaining groove on an interior surface thereof for receiving said snap-action disc.

5. The safety closure of claim 1 wherein the dome of said cap has a recessed portion to facilitate flexing of said dome in response to depression by said snap-action disc.

6. The safety closure of claim 1 wherein the snapaction disc has a centrally located bead on a side of said disc facing the dome for concentrating the lever action of said disc on the dome.

7. The safety closure of claim 1 wherein the dome of said cap includes moisture barrier means extending downwardly from the dome for mating with an interior surface of said container..

8. The safety closure of claim 7 wherein said moisture barrier means includes an annular rib for engaging said interior surface.

9. The safety closure of claim 1 wherein the dome of said cap includes a downward extension having an externally threaded portion thereon for mating in engagement with an internally threaded portion of said container.

10. A safety closure for an open-ended container having an annular lip at the open end thereof and a shoulder adjacent said lip said closure comprising:

a cap having a rim and a dome;

said rim having a locking projection extending inwardly from the rim for engaging the lip of the container in a locked position of the closure;

said dome having fulcrum means for engaging the shoulder of said container and pivoting said locking projection outwardly from said lip to an unlocked position of the closure; and

snap-action means for holding said cap in a convex configuration when said closure is in the locked position and in a concave configuration when said closure is in the unlocked position, said snap-action means being coupled to said cap and being positioned to act on the dome of said cap.

Claims (10)

1. A safety closure for an open-ended container having an annular lip at the open end thereof and a shoulder adjacent said lip said closure comprising: a unitary cap having an annular rim and a dome; said rim having a locking projection extending inwardly from the rim for engaging the lip of the container in a locked position of the closure; said dome having fulcrum means for engaging the shoulder of said container and pivoting said locking projection outwardly from said lip to an unlocked position of the closure; and a snap-action disc coupled to said cap, said disc being convex when the closure is in the locked position and being concave when the closure is in the unlocked position, said snap-action disc depressing the dome of said cap when said disc is in a concave position.
2. The safety closure of claim 1 wherein said rim extends above the snap-action disc when said disc is in the convex position to prevent accidental unlocking of the safety closure.
3. The safety closure of claim 2 wherein said rim mates with said container and tapers inwardly toward the top thereof to prevent grasping and removal of the closure when in the locked position.
4. The safety closure of claim 1 wherein said rim has a retaining groove on an interior surface thereof for receiving said snap-action disc.
5. The safety closure of claim 1 wherein the dome of said cap has a recessed portion to facilitate flexing of said dome in response to depression by said snap-action disc.
6. The safety closure of claim 1 wherein the snap-action disc has a centrally located bead on a side of said disc facing the dome for concentrating the lever action of said disc on the dome.
7. The safety closure of claim 1 wherein the dome of said cap includes moisture barrier means extending downwardly from the dome for mating with an interior surface of said container.
8. The safety closure of claim 7 wherein said moisture barrier means includes an annular rib for engaging said interior surface.
9. The safety closure of claim 1 wherein the dome of said cap includes a downward extension having an externally threaded portion thereon for mating in engagement With an internally threaded portion of said container.
10. A safety closure for an open-ended container having an annular lip at the open end thereof and a shoulder adjacent said lip said closure comprising: a cap having a rim and a dome; said rim having a locking projection extending inwardly from the rim for engaging the lip of the container in a locked position of the closure; said dome having fulcrum means for engaging the shoulder of said container and pivoting said locking projection outwardly from said lip to an unlocked position of the closure; and snap-action means for holding said cap in a convex configuration when said closure is in the locked position and in a concave configuration when said closure is in the unlocked position, said snap-action means being coupled to said cap and being positioned to act on the dome of said cap.
US3782575A 1972-03-06 1972-03-06 Safety closure Expired - Lifetime US3782575A (en)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853237A (en) * 1972-11-16 1974-12-10 Ethyl Dev Corp Vial or container with safety closure
US3885695A (en) * 1972-07-28 1975-05-27 Pennwalt Corp Snap-on safety closure for containers
US3888374A (en) * 1972-10-06 1975-06-10 Thomas David Smith Safety closures
US3973689A (en) * 1973-06-22 1976-08-10 Airfix Industries Limited Containers
US4135635A (en) * 1975-12-23 1979-01-23 Aisin Seiki Kabushiki Kaisha Dual-part cap assembly for sealed fluid reservoirs
US4235349A (en) * 1979-08-20 1980-11-25 Owens-Illinois, Inc. One-piece safety closure for rigid containers having a bead finish
US4389802A (en) * 1981-11-12 1983-06-28 Champion International Corporation Scalloped paperboard insert for use with plastic lid
US5147059A (en) * 1991-09-04 1992-09-15 Dart Industries Inc. Seal with automatic release
US5597096A (en) * 1996-02-15 1997-01-28 Dart Industries Inc. Shaker for condiments
US5699922A (en) * 1996-05-21 1997-12-23 Mhd Corporation Detachable closure system for an open-ended tubular member
DE20020175U1 (en) * 2000-11-28 2002-04-04 Wulf & Co Emsa Werk The tray-like container
US6874648B2 (en) * 2001-09-21 2005-04-05 Owens-Illinois Closure Inc. Closure with gas-barrier liner and package incorporating same
EP1712485A1 (en) * 2005-04-14 2006-10-18 Impress Group B.V. Multi-corner container
US20120037654A1 (en) * 2008-05-23 2012-02-16 Helen Of Troy Limited Container lid
US8777032B2 (en) 2011-06-21 2014-07-15 Drug Plastics & Glass Company, Inc. Child-resistant cap and container assembly
EP2816671A1 (en) * 2013-06-18 2014-12-24 Klaus Fichtner Plug socket closure
EP3109180A1 (en) * 2015-06-24 2016-12-28 Metalpak Oy Cover for metal container
WO2017076398A1 (en) * 2015-11-06 2017-05-11 Roland Kittmann Snap-fit lid produced by multi-component injection moulding

Citations (2)

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Publication number Priority date Publication date Assignee Title
US3484016A (en) * 1968-05-06 1969-12-16 Basic Products Dev Co Container and closure
US3559843A (en) * 1968-07-26 1971-02-02 Dart Ind Inc Closure for containers

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US3484016A (en) * 1968-05-06 1969-12-16 Basic Products Dev Co Container and closure
US3559843A (en) * 1968-07-26 1971-02-02 Dart Ind Inc Closure for containers

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885695A (en) * 1972-07-28 1975-05-27 Pennwalt Corp Snap-on safety closure for containers
US3888374A (en) * 1972-10-06 1975-06-10 Thomas David Smith Safety closures
US3853237A (en) * 1972-11-16 1974-12-10 Ethyl Dev Corp Vial or container with safety closure
US3973689A (en) * 1973-06-22 1976-08-10 Airfix Industries Limited Containers
US4135635A (en) * 1975-12-23 1979-01-23 Aisin Seiki Kabushiki Kaisha Dual-part cap assembly for sealed fluid reservoirs
US4235349A (en) * 1979-08-20 1980-11-25 Owens-Illinois, Inc. One-piece safety closure for rigid containers having a bead finish
US4389802A (en) * 1981-11-12 1983-06-28 Champion International Corporation Scalloped paperboard insert for use with plastic lid
US5147059A (en) * 1991-09-04 1992-09-15 Dart Industries Inc. Seal with automatic release
FR2681049A1 (en) * 1991-09-04 1993-03-12 Dart Ind Inc closure device has automatic release for containers.
NL9201453A (en) * 1991-09-04 1993-04-01 Dart Ind Inc Closing with automatic disconnection.
BE1006543A3 (en) * 1991-09-04 1994-10-11 Dart Ind Inc Closure device for containers automatic release.
US5597096A (en) * 1996-02-15 1997-01-28 Dart Industries Inc. Shaker for condiments
US5699922A (en) * 1996-05-21 1997-12-23 Mhd Corporation Detachable closure system for an open-ended tubular member
DE20020175U1 (en) * 2000-11-28 2002-04-04 Wulf & Co Emsa Werk The tray-like container
US6874648B2 (en) * 2001-09-21 2005-04-05 Owens-Illinois Closure Inc. Closure with gas-barrier liner and package incorporating same
EP1712485A1 (en) * 2005-04-14 2006-10-18 Impress Group B.V. Multi-corner container
WO2006108704A2 (en) * 2005-04-14 2006-10-19 Impress Group B.V. Multi -corner container
WO2006108704A3 (en) * 2005-04-14 2006-12-28 Impress Group Bv Multi -corner container
US20120037654A1 (en) * 2008-05-23 2012-02-16 Helen Of Troy Limited Container lid
US8777032B2 (en) 2011-06-21 2014-07-15 Drug Plastics & Glass Company, Inc. Child-resistant cap and container assembly
US9187220B2 (en) 2011-06-21 2015-11-17 Drug Plastics & Glass Company, Inc. Child-resistant cap and container assembly
EP2816671A1 (en) * 2013-06-18 2014-12-24 Klaus Fichtner Plug socket closure
EP3109180A1 (en) * 2015-06-24 2016-12-28 Metalpak Oy Cover for metal container
WO2017076398A1 (en) * 2015-11-06 2017-05-11 Roland Kittmann Snap-fit lid produced by multi-component injection moulding

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