Patent Grant
9840356
Screw top or other closures, such as lids, caps, covers, etc., rotatably couple with corresponding bottles, jars, and other containers providing means for securely covering the containers while still generally allowing the containers to be opened by a typical user without the need for a bottle opener, can opener, or other tool. For at least these reasons, screw-top closures have wide spread use in many product areas, such as health and beauty, household, automotive, pharmaceutical, food and nutrition, toys, pet care, office supplies, baby care, and many others. However, since often such containers are very tightly sealed at factories and/or are tightly resealed after use, a user may have trouble unscrewing the lid from the container. This issue is amplified when the overall diameter of the lid is particularly small or particularly large, such that it is difficult for the user to get a good handgrip on the lid. Troubles in opening rotatably covered containers is additionally increased when the user is weak, such as when the user is a child, is elderly, or is otherwise weakened by a medical condition.
One embodiment of the present invention relates to a closure for rotatably coupling with a container to cover an opening of the container. The closure includes a lid and a lever. The lid includes a primary panel defining a top surface, a skirt extending away from the primary panel and being configured to couple with the container, and a stop positioned adjacent the top surface of the primary panel. The lid defines an outermost perimeter. A footprint of the lid is defined within the outermost perimeter of the lid. The lever is rotably coupled with the lid such that the lever rotates relative to the lid between a use position and a storage position. When the lever is in the storage position, the lever is maintained substantially within the footprint of the lid. When the lever is in the use position, the lever extends outwardly beyond the outermost perimeter of the lid contacting the stop of the lid such that force applied to lever is transferred to the lid via the stop. Other levers, lids, closures, and container assemblies are also described herein.
Embodiments of the invention will be described with respect to the figures, in which like reference numerals denote like elements, and in which:
The following detailed description of the invention provides example embodiments and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any theory presented in the preceding background of the invention or the following detailed description of the invention. Relational terms herein such a first, second, top, bottom, etc. may be used herein solely to distinguish one entity or action from another without necessarily requiring or implying an actual such relationship, orientation, or order. In addition, as used herein, the term “about” or “substantially” apply to all numeric values or descriptive terms, respectively, and generally indicate a range of numbers or characteristics that one of skill in the art would consider equivalent to the recited values or terms, that is, having the same function or results.
This innovation provides a closure including a lid, configured to be rotably coupled around a container opening, and a lever rotably coupled with the lid. In one embodiment, the lid independently covers the container opening, and the lever is configured to be rotated relative to the lid between a storage position to a use position. In the storage position, the lever fits a top the lid, generally maintained within an overall footprint of the lid. When the lever is rotated to the use position, the lever extends beyond an outermost perimeter of the lid of the closure. Force applied to outer portions of the lever, while the lever is in the use position, are transferred to the lid to open or tightly close the lid. Since the lever is positioned further away from a rotational axis of the lid than an edge of the lid itself, the lever increases the distance between a center axis of the lid and the opening force applied to the closure. In this manner, since torque is the product of the amount of force applied and the distance that force is spaced away from a rotational axis of an object, the torque applied to the lid via force from the lever is increased or amplified, as compared to torque applied to the lid via an equal force applied directly to the lever. Consequently, using the lever, a smaller force is able to generate a greater lid opening torque allowing the lid to be removed from a corresponding container more easily, that is, with less applied force.
Since the lever is permanently coupled with the lid, in one embodiment, the lever is integrated with the closure. This integration allows users to immediately access and use lever to open the container, without a need to hunt for and find a separate opening tool thereto. The integration of the lever to the lid is particularly helpful for those suffering from dementia or other memory problems, who could be set off their original course to open a container by a search for an opening tool in a manner that may result in the user unintentionally abandoning that initial course altogether. Where a container is used to store a food product, the opening tool search may be detrimental to the overall nutrition of the user, which is already a common concern for dementia patients. As such, since a closure having an integrated lever to assist in opening a container eliminates the need to search for a separate opening tool, the closure described herein is greatly beneficial to memory deficient users. Various embodiments of lid and lever closure configurations are disclosed herein as example embodiments. Other embodiments incorporating the teachings of this innovation are also contemplated and will be apparent to those of skill in the art upon reading this application.
Turning to the Figures,
More specifically, one example of container 12 is illustrated with reference to
One example of closure 14 including lid 22 and lever 24 is also illustrated in
Primary panel 40 defines a substantially planar, top surface 58 facing in an opposite direction as skirt 42. In one embodiment, coupling pin 26 extends upwardly, that is, further away from bottom edge 44 of skirt 42, with a substantially circular cross-sectional shape. Coupling pin 26 is positioned on primary panel 40 such that a center axis 62 of coupling pin 26 is offset from center axis 50 of primary panel 40, and of lid 22 as a whole, in one example. In this manner, coupling pin 26 is positioned closer to an outermost perimeter 64 (see
In one embodiment, primary panel 40 additionally defines a groove 66 spaced from and curved about coupling pin 26 such that, in one example, groove 66 maintains a consistent radial spacing from coupling pin 26 about a substantial entirety of its length. Groove 66 is thereby in the shape of an arc having two opposing, curved and elongated sidewalls 72 and 74 terminating at each of first end wall, otherwise referred to as first stop 68, and second end wall, otherwise referred to as second stop 70, just before groove 66 would otherwise interface with skirt 42. Each of first stop 68 and second stop 70 serve to limit movement, more particularly, rotation of lever 24 about coupling pin 26, as will be further described below. In one example, groove 66 extends along an arc about a central angle equal to at least about 120°, and in one embodiment, equal to at least about 180°, subject to a desired amplification factor. The central angle of the arc of groove 66 is, in one example, further increased and/or maximized to gain additional mechanical advantage, where the torsional force and consequential shear stress are able to be resisted by the chosen material(s) forming lid 22 and lever 24.
Lid 22 is formed as a single piece, in one embodiment; while in other embodiments, lid 22 is formed as two pieces including an exterior shell and an interior snap in threaded portion, as will be apparent to those of skill in the art upon reading this application. Lid 22 may be formed of any suitable material. In one example, lid 22 is molded from a moldable material, such as polypropylene or polyvinyl chloride, and may or may not be formed of recyclable material. Where lid 22 may be used with a container 12 housing a food item, lid 22 is formed of a material rated as “food grade.”
One example of lever 24 is collectively illustrated in
Sidewall 82 extends around primary panel 40 such that sidewall 82 is positioned a consistent distance away from a center axis 50 thereof about a substantial entirety of its circumference, in one embodiment. Sidewall 82 terminates in a bottom edge 88 below bottom surface 86 of primary panel 40. In one example, a peg 92, such as a peg follower, protrudes downwardly from bottom surface 86 of primary panel 40. Peg 92, more particularly, extends downwardly from bottom surface 86 a further distance than sidewall 82, such that peg 92 extends well below bottom edge 88 of sidewall. Otherwise stated, in one embodiment, peg 92 extends further downwardly than a remainder of lever 24. In one embodiment, peg 92 extends further downwardly than bottom edge 88 a distance substantially equal to a depth of groove 66 in lid 22. In one example, peg 92 is substantially cylindrical and has an overall outside diameter substantially equal to, e.g., just slightly smaller than, a width of groove 66 defined between sidewalls 72 and 74 such that peg 92 fits within and is movable along groove 66. As illustrated in
In one example, lever 24 includes one or more internal wall 100 extending downwardly from bottom surface 86 of primary panel 80 to a bottom edge 102 of each internal wall 100, where each internal wall 100 is positioned within the confines of sidewall 82 providing additional rigidity to lever 24. As illustrated, the one or more internal walls 100 includes a cavity internal wall 104 extending about the outside diameter of aperture 90 to form a tubular cavity 108 open at a top, via aperture 90, and a bottom thereof. In one example, an internal wall 105 extends from two different points along sidewall 82 to different sides of peg 92 to increase the rigidity of peg 92. Other internal walls 100 are contemplated as well as the elimination of some or all of internal walls 100.
In other embodiments, lever 24 may have other suitable shapes, such as an oval, square, rectangle, star, insignia, etc., as will be apparent to those of skill in the art upon reading this application. While illustrated and described above as forming lever 24 with primary panel 80 and sidewall 82, in other embodiments, lever 24 is formed of a substantially solid piece of material where bottom edge 88 and bottom surface 86 are substantially coplanar with peg 92 extending below bottom surface 86. In these embodiments, internal walls 100 may be eliminated with tubular cavity 108 being formed through the thickness of substantially solid lever 24. Other variations are also contemplated.
Lever 24 is formed as a single piece, in one embodiment; while in other embodiments, lever 24 is formed as two or more pieces fit together. Lever 24 may be formed of any suitable material. In one example, lever 24 is molded from a moldable material, such as polypropylene or polyvinyl chloride, and may or may not be formed of recyclable material. Where lever 24 may be used with a container 12 housing a food item, lever 24 may be “food grade” rated; however, since lever 24 is spaced from an interior of container 12 via lid 22, lever 24 may be an non “food grade” material even where closure 14 is configured for or will be used with a container 12 housing food or any other ingestible item.
Closure 14 is assembled by rotatably coupling lever 24 to lid 22. More specifically, tubular cavity 108 and peg 92 of lever 24 are aligned with and positioned to face coupling pin 26 and groove 66, respectively. Lever 24 and lid 22 are pressed toward each other moving peg 92 into groove 66, and coupling pin 26 into and, in one example, through tubular cavity 108. Different formations of coupling pin 26 are contemplated that slightly impact assembly of closure 14. In one example, cap 60 on top of coupling pin 26 and tubular cavity 108 are configured to flex sufficiently under pressure to allow coupling pin 26 to move through tubular cavity 108, only to expand once past aperture 90 to at least slightly interact with primary panel 80 holding lever 24 in place between primary panel 80 and cap 60 of coupling pin. 26. In other examples, cap 60 may be initially formed separately from shaft 65 of coupling pin 26 and secured to a top thereof after lever 24 is placed to extend around coupling pin 26.
When so assembled, lever 24 fits atop lid 22 adjacent top surface 58, for example, such that bottom edge 88 faces and/or sits in contact with top surface 58 of primary panel 40 of lid 22. Lid 22 may be rotated into a storage position (see
The overall force required to open container 12 using closure 14 as described above is decreased from conventional lids 22, as lever 24 of closure 14 increases the distance between the force being applied and center axis 50 of lid 22 about open top 34 of container 12. An increase in this distance, in turn, increases the torque applied to lid 22 rotate lid 22 relative to container 12, as torque is the product of force applied and a distance from the center axis 62 at which that force is applied. More specifically, as shown in
While primarily illustrated as rotating lever 24 counterclockwise from a storage position (
One example of closure 214 including lid 222 and lever 224 is also illustrated in
Primary panel 240 defines a substantially planar, top surface 258 facing in an opposite direction as skirt 242. In one embodiment, coupling pin 226 extends upwardly, that is, further away from bottom edge 244 of skirt 242, from primary panel 220 with a substantially circular cross-sectional shape. Coupling pin 226 is positioned on primary panel 240 such that a center axis 262 of coupling pin 226 is offset from center axis 250 of primary panel 240, and of lid 222 as a whole, in one example. In this manner, coupling pin 226 is positioned between an outermost perimeter 264 (see
In one embodiment, lid 222 includes a protruding block 266 extending upwardly from a top surface 258 of primary panel 240 in a substantially triangular or pie shape. As illustrated, protruding block 266 has an exterior wall 272 adjacent, for example, immediately adjacent, outermost perimeter 264 of lid 222. First and second sidewalls 268 and 270 each extend from opposite ends of exterior wall 272 to intersect one another at a point radially inward from exterior wall 272, and in one example, the intersection is the nearest part of the protruding block to center axis 250 of lid 222. Each of first and second sidewalls 268 and 270 is formed with a similar concave curvature, with the degree of curvature matching an outside curvature of lever 224, such that each of first and second sidewalls 268 and 270 form one of stops 228 of closure 214. Each of first stop 268 and second stop 270 serve to limit movement, more particularly, rotation of lever 224 about coupling pin 226, as will be further described below. In one embodiment, protruding block may eliminate one of first stop 268 and second stop 270 to only amplify force in one of a closing and opening direction.
Lid 222 is formed as a single piece, in one embodiment; while in other embodiments, lid 222 is formed as two pieces including an exterior shell and an interior snap in threaded portion, as will be apparent to those of skill in the art upon reading this application. Lid 222 may be formed of any suitable material. In one example, lid 222 is molded from a moldable material, such as polypropylene or polyvinyl chloride, and may or may not be formed of recyclable material. Where lid 222 may be used with a container 12 housing a food item, lid 222 is formed of a material rated as “food grade.”
One example of lever 224 is collectively illustrated in
Sidewall 282 extends around and depends downwardly from primary panel 240. In an embodiment where lever 224 is circular, sidewall 282 is positioned a consistent distance away from a center axis 250 thereof about a substantial entirety of its circumference. Sidewall 282 terminates in a bottom edge 288 below bottom surface 286 of primary panel 240. In other embodiments, lever 224 may have other suitable shapes, such as an oval, square, rectangle, star, etc., as will be apparent to those of skill in the art upon reading this application. While illustrated and described above as forming lever 224 with primary panel 280 and sidewall 282, in other embodiments, lever 224 is formed of a substantially solid piece of material where bottom edge 288 and bottom surface 286 are substantially coplanar with each other. Other variations are also contemplated.
Lever 224 is formed as a single piece, in one embodiment; while in other embodiments, lever 224 is formed as two or more pieces fit together. Lever 224 may be formed of any suitable material. In one example, lever 224 is molded from a moldable material, such as polypropylene or polyvinyl chloride, and may or may not be formed of recyclable material. Where lever 224 may be used with a container 12 housing a food item, lever 224 may be “food grade” rated; however, since lever 224 is spaced from an interior of container 12 via lid 222, lever 224 may be an non “food grade” material even where closure 214 is configured for or will be used with a container 12 housing food or any other ingestible item.
Closure 214 is assembled by rotatably coupling lever 224 to lid 222. More specifically, cavity 290 of lever 224 is aligned with and positioned to face coupling pin 226. Lever 224 and lid 222 are pressed toward each other moving coupling pin 226 into and through cavity 290. Different formations of coupling pin 226 are contemplated that slightly impact assembly of closure 14. In one example, cap 260 on top of coupling pin 226 and cavity 290 are configured to flex sufficiently under pressure to allow coupling pin 226 to move through cavity 290, where cap 260 expands to its original diameter once cap 260 clears cavity 290 to at least slightly interact with primary panel 280 holding lever 224 in place between primary panel 280 and cap 260 of coupling pin. 226. In other examples, cap 260 may be initially formed separately from shaft 265 of coupling pin 226 and secured to a top thereof after lever 224 is placed to extend around coupling pin 226.
When so assembled, lever 224 fits atop lid 222 adjacent top surface 258 of lid 222 adjacent top surface 58, for example, such that bottom edge 88 faces and/or sits in contact with top surface 58 of primary panel 40 of lid 22. Lid 22 may be rotated into a storage position (see
Since, closure 214 provides bi-directional force amplification, when a user wishes to reopen container 12, lever 224 is rotated in the opposite, counterclockwise direction, to interaction with second sidewall 270 as generally indicated in phantom lines at 224′ in
As with closure 14, the overall forces required to tighten and open container 12 using closure 214, as described above, are decreased from conventional lids, as lever 224 of closure 214 increases the distance between the force being applied and the center axis 250 of lid 222 about open top 34 of container 12. An increase in this distance, in turn, increases the torque applied to lid 222 rotate lid 222 relative to container 12, as torque is the product of force applied and a distance from the center axis 262 at which that force is applied.
More specifically, as shown in
In one example, distance D4 is at least about 1.2 times distance D3, and, in one example, at least about 1.5 times distance D3, such that the force applied to lever 224, in the use position, is amplified by at least about 1.2, and, in one example, at least about 1.5 times, a similar force applied directly to lid 222. Otherwise stated, lever 224 serves to amplify the effect of applied force resulting in a larger amount of torque being applied to lid 222 per the amount of force applied to lever 224. In one example, the amplification factor on the force applied to the lever as compared to an equal force applied to the lid is equal to at least about 1.2, and, in one example, equal to at least about 1.5.
Lever 224 is easily rotated back into a storage position from either of the two use positions, that is, from a closing use position (see
In one embodiment, primary panel 380 is of any suitable shape and provides an alternative to the circular shape of primary panel 280 (e.g.
In one embodiment, the shape of primary panel 380 may be representative of a source, user, contents, or other component of container assembly 310 or the items or products maintained therein. For example, primary panel 380 may be in shape of a product logo, source logo, container logo, a well-known character, a user's initial, or other shape having additional meaningful significance. While the non-circular shape of lever 324 is shown here as a specific alternative to lever 224 of
Primary panel 340 additionally defines an aperture or depending cavity 390 extending through primary panel 380 near sidewall 282, that is, such that a center of cavity 290 is offset from centerline 294 of lever 224. Cavity 490 is sized and shaped to fit around coupling pin 226 allowing rotation of lever 324 about coupling pin 226.
Sidewall 382 extends around and depends downwardly from an outer perimeter of primary panel 340. Sidewall 382 terminates in a bottom edge 388 below bottom surface (not shown) of primary panel 380. Since sidewall 382 follows the general shape of primary panel 340, in one embodiment, portions of sidewall 382 corresponding with concavities or other indentations 398 may provide surfaces for easier grip or contact by a user's hand or individual fingers thereon. While illustrated and primarily described as forming lever 324 with primary panel 380 and sidewall 382, in other embodiments, lever 324 is formed of a substantially solid piece of material where bottom edge 388 and the bottom surface of primary panel 380 are substantially coplanar with each other. Other variations are also contemplated.
Like lever 224, lever 324 is formed as a single piece, in one embodiment; while in other embodiments, lever 324 is formed as two or more pieces fit together. Lever 324 may be formed of any suitable material. In one example, lever 324 is molded from a moldable material, such as polypropylene or polyvinyl chloride, and may or may not be formed of recyclable material. Where lever 324 may be used with a container 12 housing a food item, lever 324 may be “food grade” rated; however, since lever 324 is spaced from an interior of container 12 via lid 222, lever 324 may be an non “food grade” material even where closure 314 is configured for or will be used with a container 12 housing food or any other ingestible item.
Closure 314 is assembled by rotatably coupling lever 324 to lid 322, in the same manner as described above for lever 224 and lid 222. More specifically, cavity 490 of lever 324 is aligned with and positioned to face coupling pin 326. Lever 324 and lid 222 are pressed toward each other moving coupling pin 226 into and through cavity 490 such that cap 260 of pin 226 fits over primary panel 380 around cavity 490. In this manner closure 314 functions substantially similarly to closure 214, providing bi-directional force amplification to opening and closing forces applied to lever 324 of lid 322. That is force on lever 324 is transferred to lid 222 via protruding block 266 resulting in either clockwise or counterclockwise rotation of lid 222, depending on the direction force is applied, about open top 34 of container 12, which either securely seal closure 314 to container 212 or to remove closure 314 from container 212.
In one example, lid 422 of closure 414 includes a primary panel 440 and depending skirt 442 extending downwardly from primary panel 440, substantially adjacent to an outer perimeter of primary panel 440. In one example, primary panel 440 is substantially circular in overall shape. Skirt 442 extends around primary panel 440 such that skirt 442 is positioned a consistent distance away from a center axis 450 of primary panel 440, and of lid 422 as a whole, about a substantial entirety of its circumference. Skirt 442 terminates in a bottom edge 444 opposite primary panel 440. In one example, skirt 442 further includes threads (not shown, but similar to threads 48 and 248 described above) extending radially inwardly from an interior surface (not shown) and configured to securely and rotatably interface with threads 38 of container 12 (see
Primary panel 440 defines a substantially planar, top surface 458 facing in an opposite direction as skirt 442. Coupling pin 426 extends upwardly, that is, further away from bottom edge 444 of skirt 442, from primary panel 440 with a substantially circular cross-sectional shape. Coupling pin 426 is positioned on primary panel 440 such that a center axis 462 of coupling pin 426 is offset from center axis 450 of primary panel 440, and of lid 422 as a whole, in one example. In this manner, coupling pin 426 is positioned closer to an outermost perimeter 464 (see
In one embodiment, primary panel 440 additionally defines a protruding block 466 spaced from coupling pin 426. Protruding block 466 defines curved sidewall 472 radially inset form skirt 442. In one example, sidewall 472 includes two adjacent portions, including a first sidewall portion 468 and a second sidewall portion 470. First sidewall portion 468 serves as a first stop and is configured to interact with lever 424, when lever 424 is in the use position (see, e.g.,
Protruding block 466 may additionally include a detent or similar indentation 476 along a portion thereof. Indentation 476 is sized to interact with a user's finger providing a surface area for enhancing such interaction, as will be apparent to those of skill in the art upon reading this application.
Lid 422 may be formed as a single piece or as two or more pieces including an exterior shell and an interior snap in threaded portion as will be apparent to those of skill in the art upon reading this application. Lid 422 may be formed of any suitable material. In one example, lid 422 is molded from a moldable material, such as polypropylene or polyvinyl chloride, and may or may not be formed of recyclable material. Where lid 422 may be used with a container 412 housing a food item, lid 422 is formed of a material rated as “food grade.”
One example of lever 424 is collectively illustrated in
Sidewall 482 extends around primary panel 440 about a substantial entirety of an outer perimeter of primary panel 440, in one embodiment. Sidewall 482 extends downwardly away from primary panel 440 and terminates in a bottom edge 488 below bottom surface 486 of primary panel. In one example, a portion of sidewall 482, such as an exterior facing portion, includes vertically extending teeth 486 or other grip-enhancing feature.
While illustrated and described above as forming lever 424 with primary panel 480 and sidewall 482, in other embodiments, lever 424 is formed of a substantially solid piece of material where bottom edge 488 and bottom surface (not shown) of primary panel 480 are substantially coplanar. Other variations are also contemplated.
Lever 424 is formed as a single piece, in one embodiment; while in other embodiments, lever 424 is formed as two or more pieces fit together. Lever 424 may be formed of any suitable material. In one example, lever 424 is molded from a moldable material, such as polypropylene or polyvinyl chloride, and may or may not be formed of recyclable material. Where lever 424 may be used with a container 12 housing a food item, lever 24 may be “food grade” rated however, since lever 424 is spaced from an interior of container 12 (see, e.g.,
Closure 414 is assembled by rotatably coupling lever 424 to lid 422. More specifically, cavity 490 is aligned with and positioned to face coupling pin 426. Lever 424 and lid 422 are pressed toward each other moving coupling pin 426 into and, in one example, through cavity 490. In one example, coupling pin 426 and cavity 490 are sufficiently sized to couple to one another via friction fit while still allowing lever 424 to rotate about coupling pin 426.
When so assembled, lever 424 fits atop lid 422 adjacent top surface 458 of lid 422, for example, such that bottom edge 488 of lever 424 fits adjacent and/or abuts top surface 458 of primary panel 440. Lever 424 is rotatable into a storage position (see
The overall force required to open container 12 (see, e.g.,
Lever 424 is easily rotated back into a storage position from the use position for storage within the footprint of lid 422. As such, a compact closure 414 is provided having a built in lever 424 rotatable to aid a user in more easily opening and closing a corresponding container via rotation of closure 414 relative to container 12.
In one example, closure 414 is formed with additional features, such as one or more pressure equalization feature, that are of particular interest upon the initial opening of an associated container that may be factory or otherwise sealed in an airtight manner as shown in
In this example, lever 424 is formed such that a cavity 516 is defined between opposing portions of sidewall 482 as illustrated with reference to
In another example, frangible protrusion 514 is not frangible and/or may have a ramped surface (not shown) such that protrusion 514 serves as snap stop or lock for lever 424. More specifically, such a protrusion 514 would assist in holding lever in a storage position via interaction with interior surface 518 of lever 424 while still being fairly easily cleared and moved over by lever 424 when a slight forces is applied thereto.
However, since the overall diameter and turning radius of closure 614 about container 612 is quite small in nature, in some instances the simple amplification of forces via lever 624 may not be sufficient to remove closure 614 from container 612 in some instances, such as where the user is particularly weak. In these instances, a cylindrical or otherwise suitably shaped tool 700 is used to further assist in forcibly opening container 612. In such an embodiment, an exterior surface 702 of tool 700 is sized to partially nest with the interior curvature of lever 624, and extends above and below lever 624. As such, tool 700 provides additional surface area for a user to grasp and/or otherwise interface to increase the force the user is able to impart to lever 624 as will be apparent to those of skill in the art reading this application. While tool 700 is shown with closure 614, in one example a similar tool may be utilized with other closures described herein, including, but not limited to closure 414 illustrated in
In view of the above, the current innovation provides a closure with an integrated lever useful in opening containers making use of the closure by amplifying opening and/or closing forces applied thereto. More particularly, the lever is rotatable, relative to a container-covering lid of the closure, between a storage position and at least one use position. In the storage position the lever is maintained within the footprint of the lid, such that no additional horizontal shelf or box space is required to support a resultant container assembly. When the lever is rotated to the use position, the lever extends considerably beyond an outer perimeter of the remainder of the closure (e.g., the lid) outside a footprint of the lid. In this manner, the lever provides additional spacing from a rotational center of lid to a location where an opening or closing force is applied to closure, resulting in an amplification of the torque applied to open or close the container per unit force as compared to force applied direction to an edge of the lid.
The closure, as disclosed herein, is simple to manufacture and assemble as it generally consists of two parts, the lid and the lever, which can easily be snapped together and made ready for use. In one example, the above-described features of the closure make the closure ready for use in existing packaging runs. The lever in addition includes substantially planar top surface, in some examples, that may be used in marketing the closure and/or products maintained therein, providing instructions, and/or other information in either a visually or tactilely (e.g., Braille) manner.
Although the invention has been described with respect to particular embodiments, such embodiments are meant for illustrative purposes only and should not be considered to limit the invention. Various alternatives and changes will be apparent to those of ordinary skill in the art upon reading this application. Other modifications within the scope of the invention and its various embodiments will be apparent to those of ordinary skill.
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