Patent Application
20100308066
1. Field of the Invention
This invention relates to the field of packaging, and more particularly, packaging for granulated products, such as for example, a powder.
2. Description of Related Art
Currently, products in granular or powdered form, such as, for purposes of example without limitation, infant formula, flour, coffee, sugar, are packaged in containers. Scoops are provided within the package for measured dispensing of such contents. Consumers or users of such containers have found that the current packaging is difficult to handle with a single hand, and have found that it is difficult to open the container and to locate and remove the scoop from the packaging upon the first use without experiencing spillage. Once the lid of the container is removed and or opened, the contents are often loosely caked or packed into parts of the interior of the lid or top of the container, which leads to spillage as the contents fall away from the lid or top. While some of the falling powder may fall back into the interior of the container, much of it is wasted and contaminated as it spills onto the surrounding workspace. Additionally, prior containers do not offer adequate sealing of the contents after the container has been opened for the first time. This leads to the undesirable and inadvertent leaking or escape of the contents from various poorly sealed areas of the container.
When the user wishes to withdraw a portion of the product from the container, she must first dig around in the interior of the container with her fingers to find the scoop. This search and locate process contaminates the contents and soils the hands of the user, which can lead to more unwanted spillage as the powder-coated fingers and hands are removed from the interior of the container. Once located, the scoop is withdrawn so that it can be used, and the scoop is also coated with the contents. The bowl of the scoop is also caked or packed with the contents. As the coating of powder and the packed bowl of powder loosen during the removal process, more contents are contaminated and wasted as the coating falls away from the hands, fingers, and scoop, and as any powder caked in the bowl loosens and falls.
Additional problems have been experienced with scoops that are positioned in a more convenient location, perhaps against an interior or exterior wall. These additional problems include difficulty in grasping the scoop, which may be tightly fastened with adhesive against the wall and or with a mechanical retainer or fastener that leaves very little clearance between the scoop and surrounding structure of the container for grasping the scoop. These undesirable configurations typically will require more than one free hand for removal and grasping of the scoop.
Once the scoop is located and gripped by the user, it can be used to withdraw and dispense the desired amount of product. Typically, the scoop is then placed back into the container and the lid is replaced to close the container. The next time the product is to be withdrawn from the container, the process of searching for the buried and powder-coated scoop is repeated. U.S. Pat. No. 5,706,974 discusses the problem of storage of the scoop outside of the granular or powdered product.
Users have also found that it is difficult to remove the last bit of powder from the nearly empty container because the shape of the container includes tight and closed spaces that are inaccessible to the scoop, and which has other areas having a shape that is different than the shape of the scoop. As a result, a user must resort to inverting the container to completely empty the contents, which creates another instance of spillage and wasted contents.
Manufacturers of such containers have also experienced a number of challenges in fabricating the containers when using various types of optional thermo-forming and polymeric manufacturing processes and materials. In many prior art attempts to manufacture such containers, various thermo-molding processes are used. Those skilled in the relevant arts have long known about the difficultly in producing various types of packaging containers using thermo-formed polymeric materials.
Such materials are subject to many variables that adversely and unexpectedly result in product components being produced that can vary beyond acceptable dimensional tolerance limits, which results in the need to scrap defective containers and components of such container, and the need to produce replacements. Also, polymeric materials can render mis-shaped component profiles due to unexpected shrinkage and warping, and other thermo-forming anomalies that leave entire production runs of containers and components for containers destined for the scrap heap.
These types of manufacturing problems are especially pronounced in containers formed from assemblies that incorporate more than one component, such as where a top or lid and a collar assembly are fastened to a bottom part of the container. Problems in assembling such components can result if one or both of the components are out of tolerance or otherwise mis-shaped. Even where it is sometimes possible to assemble improperly dimensioned or mis-shaped components, most polymeric container configurations have long been in need of improved strength and rigidity characteristics to overcome such anomalies and to render such containers more durable for use in a wider array of environments.
Still other users experience problems with prior art containers that are inadequate for use in circumstances where the ambient air pressure external to the container changes drastically so as to create a significant pressure differential between the sealed interior space of the container and the external, ambient atmosphere. This situation is most apparent in situations where a manufacturer produces containers that are filled and sealed at a factory located at an altitude at or near sea level.
When such sea-level pressure containers are shipped to consumers located at higher altitudes or elevations, the container packaging will have a higher internal pressure, which creates a pressure differential that can be significant. If the pressure differential is large enough, the container may become distended making it difficult to stack and store, and may even experience a breach, leading to contaminated and wasted product. The opposite situation can occur when containers that are filled and sealed at a higher altitude are shipped to lower altitude users. Upon opening, ambient air can rush into the interior space of the container and contaminate the contents.
When a container having a pressure differential is opened, the contents may again spill due to the very rapid pressure equalization ejecting a cloud of powdered or other type of product contents. Attempts to overcome these disadvantages have included thicker walled containers, which increases weight and material costs, as well as round and cylindrical containers that may have higher hoop stress strength, but which are less efficient and convenient to stack and store on a shelf.
What has long been needed in the field of art is a container that addresses the many issues surrounding prior art containers, and which most importantly offers new and innovative ways to prevent and or minimize contamination, spillage, and waste of product contained in such containers. A container has been sought that better enables access to the last bit of powder in a nearly empty container without the need to invert the container. It is also advantageous to create a container that enables more convenient access to a scoop for dispensing the powder. A container package that can be easily manipulated by one hand while leaving the other hand free for opening and dispensing is particularly needed for a variety of applications. A container that is easy to handle, grip, and to transport in quantity and to stack and store on a shelf has also been needed for a long time.
Many attempts have still fallen far short of creating a more durable container that incorporates improved rigidity and strength characteristics that can expand the range of acceptable dimensional tolerances and that can adapt to and more readily accommodate unexpected mis-shaped container component profiles. The field of art continues to have a need for a container that can better withstand pressure differentials without compromise of the container, and which can minimize the inconvenience of spillage and wasted product due to a rapidly expelled cloud of product if the container is opened while subjected to a pressure differential.
Many of the problems of the prior art are addressed with the innovative sealable containers of the invention, which enable previously unavailable features including improved sealing capabilities, new ways to control spillage of powdered contents, new integrated dispensing scoops, and strengthened containers that can protect against spillage and damage to product due to adverse pressure differentials between the sealed product container and the external environment. In one preferred configuration of the invention, a sealable container includes walls defining interior and exterior surfaces and an interior space. The walls can preferably have an upper portion near an upper end of the walls that defines a sealing flange that includes an internal edge, which defines an opening to the interior space of the container. The sealable container also incorporates a collar having an interior surface that fits around the container near the upper portion, which together define a subcollar space between the exterior surface of the container and the interior surface of the collar.
The preferred sealable container also includes a removable lid that is pivotally or hingedly attached to the collar and which has an interior surface that, when the lid is in a closed position, covers and seals the opening of the interior space of the container. The lid preferably has a sealing wall that depends from the surface of the lid and projects toward the sealing flange of the collar, and which is dimensioned or sized to remain inward of the sealing flange when the lid is closed. In variations of any of the embodiments of the invention, the sealing wall of the lid can be used alone and in place of contemplated integral or flexible gaskets, and can also be used in combination therewith.
Even more preferably, the container includes in certain optional embodiments either an integrally formed gasket carried from the collar and or a separately formed flexible gasket, either of which are preferably dimensioned to removably rest against the sealing flange. The gasket can be carried from a surface of the container such as the interior surface of the collar, the interior surface of the walls, or the sealing wall of the lid, as well as combinations thereof and wherein more than one gasket may be preferred for use. When the lid is in the closed position, the gasket, the sealing wall and the sealing flange are arranged and dimensioned so that the sealing wall biases the flexible gasket against the internal edge of the sealing flange to seal the subcollar space from the container interior, which prevents the contents of the container from spilling into the subcollar space.
In variations of these embodiments, the sealable container can also incorporate a modified collar that includes a raised seat or similar feature that carries the gasket or to which the gasket is affixed. As with other versions of the invention, the raised seat is configured so that that gasket projects inwardly to bias against and to extend beyond the internal edge of the sealing flange, which also serves to control spillage of the contents of the container. More preferably, the gasket can be arranged to remain biased against the sealing flange when the lid is in an open position.
In additional optional embodiments of the invention, the sealable container can also include a removable seal that is substantially impervious to air, water, and even light if desired. The impervious seal preferably extends across the opening to seal the interior space and attaches to the sealing flange. In variations where the flexible gasket is included, the impervious seal preferably is situated underneath the gasket, and the flexible gasket flexes to enable removal of the removable seal and thereafter flexes back to rest against the sealing flange.
In most embodiments of the inventive container, the lid is rotatably, hingedly, and or pivotally connected to the container with a live or mechanical hinge mounted between the lid and the collar so that the lid can move between open and closed positions. In certain preferred configurations of the invention, the novel sealable container is arranged wherein its walls form the container to have an approximately cuboid shape. However, the present invention is susceptible for use in cylindrical, rectilinear, obloid, and many other types of container packaging and for use with all kinds of containerized substances including fluids as well as powdered and granular materials.
Some modifications of the embodiments of the invention also contemplate inclusion of a removable scoop and a scoop holder that can be attached to the interior surface of the lid for holding a scoop. The most typical scoops have a bowl that is carried from a handle. The scoop holder of the invention is formed with a first bowl cover bracket and has a retainer that immobilizes the handle. A first projection is also included that extends from the interior surface of the lid and which has a handle holding notch that holds the handle away from the interior surface in a grasping position so that it is easy for a user to grasp and remove the scoop from the scoop holder.
In still other variations of any of the embodiments of the inventive sealable container, the sealing wall of the lid can be further modified to funnel inwardly toward a lower edge, either by a curved inwardly directed tapering of a lower edge of the sealing wall, or by a inwardly slanted or inclining tapering thereof, or by a combination thereof.
The new and novel sealable container also contemplates further modified lid arrangements that are compatible for use with any of the embodiments, modifications, and variations of the invention. Such lid configurations are directed at improving control of powdered contents, and the improvements optionally include the lid having a substantially domed central section that is dimensioned to be smaller than the sealing wall of the lid. More preferably, the substantially domed central section is joined to the lid by either the sealing wall or an angled wall, or both, wherein the angled wall tapers from the domed central section down to the interior surface of the lid at a point that is proximate to the sealing wall. The novel capability and benefits of the substantially domed central section are evident upon righting a disoriented container in that the angled wall and the sealing wall cooperate to direct any powder contents that may have accumulated within or become packed against the interior surface of the lid, down into the interior space of the container, which prevents entry into the subcollar space and other forms of spillage off of the lid upon opening the container. Preferably, the angled tapered wall can have an angle relative to a vertical direction of between about 10 and 75 degrees, and more preferably between about 25 and 45 degrees, and even more preferably about 30 degrees.
Many variations of possible domed lid configurations according to the principles of the invention are contemplated and can include, for purposes of example without limitation, the substantially domed central section extending to the sealing wall to define an area between approximately 20 percent and approximately 80 percent smaller than the entire area defined by the removable lid. Still other variations of the domed lid can be used with any of the inventive embodiments and include the substantially domed central section to project upwardly with a height dimension that is between approximately 10 percent and approximately 60 percent of a cumulative lid height dimension.
As before and as described elsewhere herein, the innovative sealable container embodiments can be further modified to have the walls joining each other and joining a bottom surface of the container to define junctions that have a unique and or predetermined or a particular cross-sectional geometry. In these variations of any of the embodiments of the invention, a modified scoop is incorporated for removing contents from the interior space of the container. The modified scoop includes a bowl that has a rim that is substantially congruent to the particular cross-sectional geometry of the junctions between the walls and between the walls and the bottom surface of the container.
This arrangement enables a user to conveniently remove all of the contents of the container, whether powder or fluid, without the need to invert the container, which can result in unwanted spillage. These variations contemplate the particular cross-sectional geometry of the junctions between the walls and between the walls and the bottom surface to include any one of a number of geometries including, for purposes of example without limitation, a right angle, multiple angles such as multiple obtuse angles, and curvilinear geometries including a circular geometry having a particular radius. For each of these respective geometries, the rim of the scoop bowl includes a portion that is substantially congruent to the respective geometry, and or which is flexible and or deformable upon use to be made congruent thereto.
The sealable container of the present invention also can include many different strength and rigidity improving features that can include the walls of the container having the upper portion defining on the exterior surfaces a plurality of interiorly projecting indentations or recesses that are spaced apart by strengthening or stabilizing bridges. The indentations preferably include a downwardly facing top surface or upper lug ledge. The collar is also modified to include a plurality of spaced apart flex clips or engagement lugs that are formed with retainer faces or upwardly facing surfaces. The flex clips preferably depend downwardly into the subcollar space and are positioned or juxtaposed to align with the plurality of indentations when the collar is fitted over the upper portion of receptacle of the container.
This arrangement enables the upwardly facing surfaces to engage the downwardly facing top surfaces whereby the flex clips hold the collar to the upper end of the container. The flex clips can also preferably incorporate one or more stiffeners that increase the strength and rigidity of the flex clips to optimize engagement strength. The stiffeners also to improve an alignment capability established by the flex clips, which effectively center and align the collar about the upper portion of the container as the collar is fitted onto the upper portion of the walls of the container.
Additionally preferred variations of the flex clip and indentation modification include the upwardly facing surfaces being dimensioned to be smaller than the downwardly facing surfaces of the indentations so that the collar and container can absorb dimensional tolerance errors and enable the collar to fit around the upper portion of the container even if they are not sized exactly as may be desired for a perfect fit. Further preferable modifications to the various embodiments of the inventive sealable container include at least one of the collar and the upper portion of the walls to be formed from a substantially flexible material.
Using a flexible material such a polymeric material like polypropylene and or polyethylene will enable at least one of the collar and the upper portion of the walls to flex to absorb dimensional tolerance errors and enable the collar to fit around the upper portion of the container. Either of these innovative adaptations are suitable for use with all of the variations of the embodiments of the invention and can, as a result, also accommodate shape errors and mismatch between at least one of the collar and the upper portion of the walls to enable the collar to fit around the upper portion of the walls, even when unexpectedly or undesirably misshaped collars and or receptacles are encountered during manufacture and assembly.
In yet another particularly preferred modification to the various embodiments of the invention described herein, the sealable container employs a modified collar having a substantially J-shaped and or U-shaped, upside-down cross-section. In this variation, the J or U shaped cross section includes an outward projecting long wall, a substantially rounded, stiffening top portion, and an inward short wall that cooperate to define the subcollar space.
The invention is susceptible to still further optional variations wherein the container is strengthened by incorporating the plurality of indentations and the plurality of spaced apart flex clips to be positioned in a oppositely paired relationship. In the application of a substantially cuboid container shape, the opposite pairing is established across opposite facing walls of the container. However, paired, a force vector coupling is established between each of the pairs. This increases rigidity and structural stability and strength of the sealable container when the collar is fitted onto the upper portion. Additionally, this particular arrangement of flex clips and indentations enables an aligning capability between the collar and the upper portion of the walls, which can be useful during assembly of the inventive sealable containers. The flex clips can be further strengthened by including at least one stiffening rib on each flex clip.
Still other contemplated modifications are suitable for use with all of the modifications, variations, adaptations already described, which include the bottom surface including pressure control features that can prevent deformation of the container, and which can also be adapted to enable controlled deformation to relieve stress on the container due to internal pressure being higher than an external ambient atmospheric pressure, which can occur when the sealable container is subjected to pressure changes due to altitude changes and or other types of crushing forces that may be experienced during manufacture, filling with product, and during use and transit.
In this adaptation of the preferred embodiments of the invention, the bottom surface includes a pressure control portion that is otherwise referred to as a central raised stiffener portion, which contrary to the plain meaning of the word stiffener, can also incorporate a flexible and or collapsible pressure relief section. An outer planar portion that is substantially flat for resting on a surface surrounds the central raised stiffener portion. The central raised stiffener portion preferably projects or is directed towards the interior space in a plurality of steps having riser and tread portions, the riser portions generally project in a direction substantially upward relative to the outer planar portion and the tread portions are approximately parallel to the outer planar portion. The plurality of these riser and tread steps further contemplate multiple variations.
In one version, the steps are stiffened by thickening in a cross-section to resist deformation due to pressure changes relative to the pressure inside the sealed container. In another complementary version that can be used alone or in combination with the stiffened variation, an accordion or bellowed type arrangement of the steps or series of steps are included, which flex or deform in response to pressure changes external to the sealable container so as to lessen the net pressure differential between the interior of the sealable container and the ambient outside pressure.
In still other variations of the embodiments of the invention, a sealable container includes a top wall, a bottom wall, a front wall, a rear wall, a first side wall, and a second side wall. Each of the walls has a substantially rectangular shape. The rectangular shape of each wall enables the container to be stored easily on a shelf or counter-top. The top wall and portions of the front wall, the rear wall, the first side wall, and the second side wall form a lid. The lid is pivotally attached to the rear wall by a hinge. The lid can be opened by rotation thereof about the hinge. The front wall has at least one recess and the rear wall has at least one recess. The at least one recess of the front wall and the at least one recess of the rear wall are adjacent to the first side wall. The recesses provide a grip feature, which enables the user to manipulate the lid of the container with one hand when the container rests on a flat surface, e.g., a tabletop or a counter top. The container is preferably made of a polymeric material.
The container provided herein is suitable for holding granular material or powdered material, the container having a scoop furnished therewith. The scoop has a handle and a bowl. The interior of the container is characterized by having corners that are congruent with the bowl of the scoop furnished with the container. The congruency of the bowl of the scoop with the corners of the container enables the user to remove the last bit of powder remaining in the container. A flexible seal can be applied to the interior of the container to provide a substantially moisture-impervious, oxygen-impervious seal for the granular material or powdered material.
The lid is furnished with a scoop holder, whereby the scoop can be stored outside the bulk of the contents of the container to enable easy, clean access to the contents of the container. The container can be opened and closed with a single hand.
These variations, modifications, and alterations of the various optional embodiments can be used either alone or in combination with one another and with the features and elements already known in the prior art and also herein described, which can be better understood by those with relevant skills in the art with reference to the following detailed description of the preferred embodiments and the accompanying figures and drawings.
Without limiting the scope of the present invention as claimed below and referring now to the drawings and figures, wherein like reference numerals, and like numerals with primes, across the drawings, figures, and views refer to identical, corresponding, or equivalent elements, methods, components, features, and systems:
a and 38b are detail views taken about detail view lines 38 in
a and 39b are detail views taken about detail view lines 39 in
As used herein, the expression “top wall” means the side of the container exclusive of the bottom wall, the first side wall, the second side wall, the front wall, and the rear wall of the container. The term “lid” means a hinged cover for a hollow receptacle and is intended to include either an independently formed and removable lid and other variations that can include the lid alone, the lid and collar assembly, and other variations wherein the lid and or collar are formed from the top wall of the container plus the upper portion of the first side wall, the upper portion of the second side wall, the upper portion of the front wall, and the upper portion of the rear wall of the container. As used herein, the term “bracket” means a wall-anchored fixture adapted to support a load.
Referring now to
Although the container 10 and the later described variations and modifications thereto are illustrated in the various descriptions and figures to be substantially cuboid, a cuboid shape is depicted only because such a shape is sometimes found by those skilled in the relevant arts to be the more challenging type of container to describe, manufacture, and to use. However, the present invention is susceptible for use with all shapes and sizes of containers including cylindrical, obloid, rectilinear, and other shapes, and for use with containers adapted for fluids as well as for the powdered materials and or product described most often herein. Furthermore, each of the optional embodiments of the invention contemplate interchangeability with all of the various features, components, modifications, and variations illustrated throughout the written description and pictorial illustrations.
As can be seen in
The lid is also described in more detail below in connection with the various embodiments of the invention and will hereinafter be referred to by the reference characters “L” and “D” (see
The front wall 16 has a recess 26a positioned to facilitate gripping of the container 10 by the left thumb of the user. The rear wall 18 also has a recess 26b positioned to facilitate gripping of the container 10 by the fingers of the left hand of the user. The recess 26a can further have an additional recess 27a to indicate the precise location in the recess 26a for the placement of the thumb of the user. The recess 27a is smaller in area than the recess 26a. The recess 27a is preferably circular in shape, but other shapes are also acceptable. The recess 26b can further have an additional recess 27b to indicate the precise location in the recess 26b for the placement of the desired finger of the user. The recess 27b is smaller in area than the recess 26b. The recess 27b is preferably circular in shape, but other shapes are also acceptable. The recesses 26a and 26b are positioned adjacent to the first side wall 20 of the container 10.
In an alternative embodiment (not shown), the recesses 26a, 27a, 26b, and 27b can be positioned to facilitate gripping of the container 10 by the right thumb of the user and by the fingers of the right hand of the user. In this alternative embodiment, the recesses would be positioned adjacent to the second side wall 22 of the container 10.
In still another alternative (not shown), the front wall 16 can have two recesses and the rear wall 18 can have two recesses, one recess on the front wall 16 and one recess on the rear wall 18 positioned to facilitate gripping of the container 10 by the left thumb and the fingers of the left hand of the user and one recess on the front wall 16 and one recess on the rear wall 18 positioned to facilitate gripping of the container 10 by the right thumb and the fingers of the right hand of the user. In this embodiment, pairs of recesses would be positioned adjacent to both the first side wall 20 and the second side wall 22.
The hinge 24 prevents the lid “L” from descending when the product is being accessed by the user, which would cause a nearly empty container to tip over. The hinge 24 can be a living hinge or a conventional mechanical hinge. A living hinge is a thin flexible web of material that joins two rigid bodies together. In this case, the living hinge connects two segments of an object, i.e., the lid “L” and the rear wall 18 of the container 10, to keep the segments together and allow the object to be opened and closed.
The material used to make a living hinge is preferably a very flexible polymeric material, such as, for example, polypropylene and polyethylene. Living hinges can be flexed numerous times without failure. Living hinges are described in more detail at http://www.efunda.com/designstandards/plastic_design/hinge.cfm, Nov. 6, 2006, pages 1-3 and at http://engr.bd.psu.edu/pkoch/plasticdesign/living_hinge.htm, Nov. 6, 2006, pages 1-8, both of which are incorporated herein by reference.
Conventional mechanical hinges include, but are not limited to, hinge assemblies comprising a first panel having two or more sockets mounted on an edge thereof and a second panel having two or more pins mounted on an edge thereof, the aforementioned pins mating with the aforementioned sockets to join the edge of the first panel to the edge of the second panel, the pins and the sockets allowing rotation of the first panel about the second panel. Conventional mechanical hinges are described in more detail in http://www.hardwaresource.com/index.asp, see “other hinges”, Dec. 26, 2006, incorporated herein by reference.
The hinge 24 is designed in such a manner that when the lid “L” of the container 10 is opened to enable the user to obtain access to the contents of the container 10, the lid “L” will not fall forward to the closed position. Further, the lid “L” will not fall too far backward beyond the open position desired, which would cause a container 10, when nearly empty, to tip over onto the rear wall 18. Another type of equally suitable mechanical hinge can be seen with reference to
The top wall 12, the bottom wall 14, the front wall 16, the rear wall 18, the first side wall 20, and the second side wall 22 enclose a hollow interior space “H” (
Referring now to
The substantially moisture-impervious, oxygen-impervious seal 28 can be formed from a sheet of material substantially impervious to oxygen, moisture, and or light. A material suitable for use in preparing the substantially moisture-impervious, oxygen-impervious seal 28 can be a sheet of foil, such as, for example, aluminum foil, or a foil made of some other metallic material, or a combination of a layer of materials that can include a metallic, a polymeric, and other material layers.
In one embodiment, the substantially moisture-impervious, oxygen-impervious seal 28 be applied at a position near the edges of the upper portion 16d of the front wall 16, the upper portion 18d of the rear wall 18, the upper portion 20d of the first side wall 20, and the upper portion 22d of the second side wall 22 on the interior major surfaces 16a, 18a, 20a, 22a, of the front wall 16, the rear wall 18, the first side wall 20, and the second side wall 22, respectively, of the container 10.
The substantially moisture-impervious, oxygen-impervious seal 28 can be removed by pulling the pull-tab 28a of the seal 28 and removing the seal 28 from the positions of attachment to the interior major surfaces 16a, 18a, 20a, 22a, of the front wall 16, the rear wall 18, the first side wall 20, and the second side wall 22, respectively, of the container 10.
Referring now to
The scoop 32 is positioned in the first bracket 30a and the second bracket 30b in such a manner that the user is induced to remove the scoop 32 by the handle 34, rather than by the bowl 36. Furthermore, the first bracket 30a and the second bracket 30b are positioned so that the scoop 32 is held by the first bracket 30a and the second bracket 30b in such a manner as to prevent the powdered product or granular product from entering the bowl 36 of the scoop 32.
As discussed elsewhere, this feature is of particular benefit to users of the containers of the invention in view of the fact that such containers are subjected to unpredictable amounts of jostling, shaking, upside-down or inverted shipment by truck, car, and mail carrier, and impacts during manufacture, distribution, and daily use by consumers. Such a container is possibly subject to a higher level of abuse in environments involving children and child care, such as where a parent carries a powdered product in a container such as those described herein in an automobile and or in a heavily-used diaper bag, both of which can experience the ravaging abuse of curious children at play.
The first bracket 30a of the scoop holder 30 covers the opening in the bowl 36 of the scoop 32, thereby preventing the product in the container from entering the bowl 36 of the scoop 32, which could lead to scattering product outside of the container upon removal of the scoop 32 from the scoop holder 30. The bowl 36 of the scoop 32 does not interfere with substantially moisture-impervious, oxygen-impervious seal 28 when the scoop 32 is positioned in the scoop holder 30.
The scoop holder 30 is positioned in such a manner that the handle 34 of the scoop 32 is prevented from contacting the substantially moisture-impervious, oxygen-impervious seal 28 positioned over the contents of the container, thereby protecting the integrity of the seal 28. In addition, the scoop holder 30 prevents the handle 34 from being dislodged and maintains the position of the scoop 32 during shipping and storage.
As shown in
The scoop 32 can be attached to the lid “L” by aligning the bowl 36 of the scoop 32 with the first bracket 30a and the second bracket 30b of the scoop holder 30 and sliding the bowl 36 of the scoop 32 against the first bracket 30a and the second bracket 30b of the scoop holder 30, thereby generating a friction fit between the bowl 36 of the scoop 32 and the scoop holder 30.
An optional, but desirable, feature of the lid “L” is a restraint 38 for preventing the handle 34 of the scoop 32 from rotating. In some optional arrangements, the connection (i.e., the friction fit) between the scoop holder 30 and the bowl 36 of the scoop 32 may loosen sufficiently due to unlikely tolerance mismatches or improbable transportation induced anomalies and may allow the bowl 36 of the scoop 32 to rotate in the scoop holder 30, thereby allowing the handle 34 of the scoop 32 to contact the substantially moisture-impervious, oxygen-impervious seal 28 and possibly puncture the seal 28.
As shown in
The first projection 40 need not exhibit any level of flexibility, but the second projection 44 should be sufficiently flexible that it can be moved sufficiently by the handle 34 of the scoop 32 when the scoop 32 is being returned to the scoop holder 30 and the restraint 38. As can be understood with continued reference to
The bowl 36 of the scoop 32 has a rim 36a with a cross-sectional geometry that is shaped to be congruent with the junctions or corners 50a, 50b, 50c, and 50d, formed by the junctions between the front wall 16 and the first side wall 20 and the bottom wall 14, the front wall 16 and the second side wall 22 and the bottom wall 14, the rear wall 18 and the first side wall 20 and the bottom wall 14, and the rear wall 18 and the second side wall 22 and the bottom wall 14, respectively. The corners or junctions 50a, 50b, 50c, and 50d are shown in
As shown in
In still another embodiment (see exemplary scoop variation in
The shape of the bottom wall 14 of the container 10 and the shape of the top wall 12 of the container 10 can be designed to enable a plurality of containers 10 to be stacked, one upon another, such as, for example, on a shelf in a grocery store. It is preferred that the shape of the perimeter of the bottom wall 14 of the container 10 be substantially similar to the shape of the perimeter of the top wall 12 of the container 10. The top wall 12 can be flat or contoured and the bottom wall 14 can be flat or contoured. Generally, if the top wall 12 is contoured, the bottom wall 14 must also be contoured in such a manner as to be substantially congruent with the top wall 12, so that a plurality of containers 10 can be stacked one on top of another.
However, so long as the lid “L” is flat, the containers 10 will be stackable even if the bottom wall 14 of the container 10 is not flat, provided that the bottom wall 14 of the container 10 is designed so that the top wall 12 of the container 10 remains in a horizontal orientation relative to a horizontal shelf. In
The rectangular shape of the container 10, in combination with the recesses 26a and 26b for gripping, enables the user to hold the container 10 with one hand, while using the scoop 32 with the other hand. The shape of the container 10 enables ease of access to the product during the act of removing the product from the container 10 by means of the scoop 32.
The shape of the container 10 enables the lid “L” to be securely fitted to the upper portions 16d, 18d, 20d, and 22d, of the front wall 16, the rear wall 18, the first side wall 20, and the second side wall 22, respectively, of the container 10.
Referring now to
A first bridge 60a and a second bridge 60b project from the first edge 58a and the second edge 58b of the latch 54, respectively. The first bridge 60a comprises a small stem 62a at one end of which is a knob 62b ; the second bridge 60b comprises a small stem 64a at one end of which is a knob 64b. The knobs 62b and 64b and portions of the small stems 62a and 64a fit into small recesses (not shown) in the exterior surface “Le” of the lid “L”, which small recesses are congruent with the bridges 60a and 60b, and are prevented from being removed from the recesses (not shown) by friction, until the latch 54 is opened for the first time. The function of the bridges 60a and 60b is to indicate any tampering with the latch 54. Referring now to
When the latch 54 is in a non-tampered state, the first bridge 60a and the second bridge 60b retain their integrity. Prior to being used, the tab or flap 56 is maintained in a closed position by gripping a keeper 72, which is formed into a recessed portion 74 of the exterior major surface 16b of the front wall 16. When the latch 54 is opened by rotating the tab or flap 56 from its initial unopened position to a second position away from the keeper 72, the pull force breaks the small stems 62a and 64a, thereby allowing the lid “L” of the container 10 to be lifted upwardly so that the lid “L” can rotated about the hinge 24 (see
If the user finds that extremely little pulling force is required to break the small stems 62a and 64a of the bridges 60a and 60b, respectively, the consumer will suspect that tampering with the latch 54 has taken place. After the small stems 62a and 64a are broken, the knobs 62b and 64b help to retain the remaining portions of the broken bridges 60a and 60b in the recesses in the exterior surface “Le” of the lid “L”. In order to close the lid “L” of the container 10 after a given use, the lid “L” is rotated downwardly so that the edges of the lid “L” come into contact with the edges of the upper portions 16d, 18d, 20d, and 22d of the front wall 16, the rear wall 18, the first side wall 20, and the second side wall 22, respectively, of the container 10, whereupon the tab or flap 56 of the latch 54 can grip the keeper 72 to maintain the container 10 in a closed position until the user desires to open the container 10 at a later time. Even more preferably, the latch 54 engages and disengages with a click that can be perceived both by tactile as well as auditory feedback, which give the user additional cues regarding the open or closed state of the lid “L” and the contained 10.
As shown in
It is preferred that a score line or a line of perforations 78 be present in the tamper-indicating seal 75 at the line where the lid “L” meets the upper portion 16d of the front wall 16 of the container 10. An attempt the open the container 10 will result in tearing the tamper-indicating seal along the score line or the line of perforation 78, thereby indicating visually an inadvertent or undesired dislodgement of the lid L from the collar 84, or an unauthorized attempt to open or an actual opening of the container 10.
Preferably, the seal 75 incorporates an upper portion 76 that can be separated from the remainder of the seal 75 about a frangible portion 77 that is formed to have a predetermined cross section. The predetermined cross section can preferably depend upon the geometry and dimensional configuration of the container. The predetermined cross section can also optionally depend upon the likely force that the seal 75 will encounter as the lid L is dislodged or separated from the collar 84.
In one optional arrangement of the container 10, collar 84, and lid L that may be subjected to the force induced by human fingers separating the lid L from the collar 84, the seal 75 can be formed from a foil laminated with a polymeric material to have a thickness of between about 1 and 10 mils (about 0.001″ to 0.010″), or more preferably between about 1.5 mils and 6 mils, and even more preferably between about 2.0 mils and 4.0 mils. The contemplated seal 75 can also be formed with the predetermined cross section ranging approximately between 0.50″ and 1.0″, and more preferably between about 0.75″ and 0.9″, and even more preferably about 0.88″.
In yet other optional variations of the seal 75, the upper portion 76 and the remainder of the seal 75 adjacent to the frangible portion 77 can incorporate a cross section that is substantially the same as or larger or smaller than that of the frangible portion 77. Even more preferably, the upper portion 76 and remainder of the seal 75 can be substantially larger in cross section relative to the frangible portion 77 so as to enable a greater surface area of adhesive to adhere to an adhesion promotion area or control region 79, which is described in more detail elsewhere herein.
In one contemplated modification to any of the embodiments of the proposed seal 75, the cross section of the upper portion 76 and remainder of the seal adjacent to the frangible portion 77 was formed to be approximately between 0.9″ and 2.0″, and more preferably between about 1.0″ and 1.75″, and even more preferably approximately 1.3″.
In other possibly desirable alternative configurations of the tamper seal 75, the contemplated scoring or perforations 78 can also incorporate a cross hatched or what is sometimes referred to as a “herring bone” pattern. With reference now also to
Either alone or in combination with the predetermined cross section of the frangible portion 77, the crosshatch perforation pattern 78 can be incorporated to precisely establish the shear or tensile force that can be withstood by the frangible portion 77. In other words, a precise, predetermined and net or effective cross sectional area of the frangible portion can establish a precision separation force control capability unavailable with prior devices. Such a precise cross sectional area can be incorporated when and if preferred so as to ensure that any dislodgement or separation force over some preferred amount that is imposed between the lid L and the collar 84 will cause the upper portion 76 of the seal 75 to separate from the remainder of the seal 75.
More preferably, the seal 75 is attached to a specially treated area of any of the variations of the collar and lid, which has been treated to increase the surface energy thereof, which in turn improves the adhesion characteristics. The contemplated specially treated area can be termed an adhesion promotion area or adhesion control region 79.
Enhancing the adhesion capabilities of the region 79 is of particular interest to the instant application because improved adhesion capabilities enable use of a dimensionally smaller seal 75, which can improve aesthetics. Additionally, of special importance to the embodiments of the invention where a tamper seal 75 can be incorporated, the unusual geometries and dimensional arrangements of the container 10 may result in smaller surface areas being available for application of the seal 75.
The contemplated adhesion control region 79 is optionally established by increasing the surface tension or energy of the polymeric material about and proximate to adhesion control region 79. A wide variety of such treatments are available and generally known to those having skill in the relevant arts.
Most often, such treatments will optionally include plasma, flame, or corona discharge treatments, chemically treating or coating the region 79 with an adhesion promoting acrylic substance, and/or coating the region 79 with an adhesion promoting chemical. One or more such treatments can be used separately, sequentially, and or in combination with one another to obtain the desired level of improved adhesion capability of the adhesion control region 79.
The dimensions of the container 10 and the components thereof are not critical. However, for the purpose of illustration, typical dimensions of the various components can be as follows:
Top wall 12 and bottom wall 14: 4 in. to 5 in.×5.5 in to 6.5 in.
Front wall 16 and rear wall 18: 5.5 in. to 7.5 in.×5.5 in. to 6.5 in.
First side wall 20 and second side wall 22: 4 in. to 5 in.×5.5 in. to 7.5 in.
Volume of container 10: 23 oz. to 34 oz.
There are numerous methods of making the container 10 described herein. However, in order to facilitate mass production of containers having a variety of volumes, the container 10 can be assembled in a variety of equally suitable ways and by using any of a number of effective and optional mechanisms. For purposes of illustration without limitation, the exemplary configurations shown here contemplate friction-fit, clip, and similar types of lid-collar-container assembly devices. Such examples can be seen in the various figures including in
Referring now to
An assembly 82 comprising a collar 84 and the lid “L” (alternatively referred to herein as “collar/lid assembly 82”) can be provided by a supplier. The collar/lid assembly 82 comprises the top wall 12, the upper portion 16d of the front wall 16, the upper portion 18d of the rear wall 18, the upper portion 20d of the first side wall 20, and the upper portion 22d of the second side wall 22. The upper portion 16d of the front wall 16, the upper portion 18d of the rear wall 18, the upper portion 20d of the first side wall 20, and the upper portion 22d of the second side wall 22 typically comprise from about 10% to about 40% of the height of the front wall 16, rear wall 18 first side wall 20, and second side wall 22, respectively.
The ratios for the lower portion 16e of the front wall 16, the lower portion 18e of the rear wall 18, the lower portion 20e of the first side wall 20, and the lower portion 22e of the second side wall 22 and the ratios for the upper portion 16d of the front wall 16, the upper portion 18d of the rear wall 18, the upper portion 20d of the first side wall 20, and the upper portion 22d of the second side wall 22 primarily depend upon the volume of the container 10, which in turn depends upon the volume of the tub-shaped receptacle 80. The size of the assembly 82 of the collar and lid essentially remains constant, but the volume of the tub-shaped receptacle 80 varies to provide containers of various volumes.
Various attachment methods for combining the collar and lid assembly with the receptacle are contemplated by the invention, and combinations and variations can be found to be equally suitable and can be interchanged as needed as can be better understood with reference to
The collar 84 is joined to the tub-shaped receptacle 80 by aligning the guide fins 86a, 86b in each corner 84a, 84b, 84c, and 84d of the collar 84 with the corners 80a, 80b, 80c, and 80d located at a sealing flange or rim 88 of the tub-shaped receptacle 80 and press-fitting the collar 84 to the tub-shaped receptacle 80. The sealing flange or rim 88 terminates in an internal edge 89 that defines an opening to the hollow interior space “H”.
The guide fins 86a, 86b in each corner 84a, 84b, 84c, and 84d of the collar 84 snugly fit into a groove 90 running around the exterior periphery of the tub-shaped receptacle 80. After the collar 84 is joined to the tub-shaped receptacle 80, the tamper-indicating seal 75 is applied to the front wall 16 and the lid “L” of the container 10. The later described interlocking and lid, collar, receptacle combining features illustrated in
The position of the substantially moisture-impervious, oxygen-impervious seal 28 inside of the container 10 is a matter of choice. In one embodiment, the substantially moisture-impervious, oxygen-impervious seal 28 can be applied directly to the sealing flange or rim 88, which is an attach surface running around the periphery of the tub-shaped receptacle 80 by means of an adhesive, typically a heat-sealable adhesive. See
The use of a living hinge or a mechanical hinge for pivotally and or hingedly joining the lid “L” to the collar 84 is also a matter of choice. Referring now to
While the pin on the projection 102b is not shown, it is the mirror image of the pin 106a. Sockets can be formed in the lid “L” to receive and retain the pins of the projections 102a, 102b.
In addition, the shape of the rear edge 112 of the lid “L” and the shape of the upper rear edge 104 of the collar 84 can be designed in such a manner that when the lid “L” is fully opened, the lid “L” will be supported by the upper rear edge 104 of the collar 84 at a specified angle, such as, for example, 120°, so that the user can obtain access to the contents of the container 10 without being restricted by the presence of the lid “L”. In the particular embodiment shown in
Any and all of the preceding preferred embodiments and the modifications and variations thereof can be incorporated in whole or in part to many additionally contemplated configurations of the container 10. Similarly, the many next to be discussed adaptations, variations, and modifications, are contemplated for use with all of the preceding embodiments, alone, in part, and in combination. With continued reference to
As with other embodiments, the sealing container 210 includes a top wall 212, a bottom wall 214, a front wall 216, a rear wall 218, a first side wall 220, and a second side wall 222, which together define an interior space “I”. Similar to other embodiments of the invention, the walls are defined with interior and exterior surfaces and upper and lower portions. The front wall 216 includes an interior surface 216a, an exterior surface 216b, an upper portion 216d, and a lower portion 216e. The rear wall 218 has an interior surface 218a, an exterior surface 218b, an upper portion 218d, and a lower portion 218e. The first side wall 220 defines an interior surface 220a, an exterior surface 220b, an upper portion 220d, and a lower portion 220e. The second side wall 222 includes an interior surface 222a, an exterior surface 222b, an upper portion 222d, and a lower portion 222e.
With reference now also to
An alternative configuration of the lid depicted here is referred to generally by reference character “D”. The lid “D” has an interior surface, which will hereinafter be referred to by the reference character “Di” (
An alternative hinge 224 can attach the lid “D” to the upper portion 218d of the rear wall 218. While any of the previously described hinges can be incorporated in the embodiment contemplated by sealing container 210, the modified mechanical hinge 224 as shown in the various figures can be incorporated to replace or work in combination with any of the preceding hinges.
The modified variations of the sealing container 210 can also incorporate gripping features such as those previously described and as shown in
With reference now also to
Referring now to
In another optional variation to any of the preceding embodiments, and with reference to
In further preferred arrangements, the impervious seal 28 is seated around the upper end 282 to close and seal the opening and is removably affixed to the sealing flange 284. To improve accuracy and convenience during assembly and placement of the impervious seal 28 on the sealing flange 284, an optional snap bead 288 (
Such a snap bead 288 can be used as a shelf and or seat that contacts the edges of the unattached impervious seal around the periphery of the container to keep the impervious seal 28 in place and centered so that it can be attached with adhesive, heat sealing, or another means.
In the past, many containers were improperly sealed due to incorrect placement of the seal before an adhesion step glues, melts, or otherwise affixes the impervious seal 28 to the sealing flange 284. Additional variations of any of the embodiments of the invention can also include assembly improving features such as one or more engagement recesses or indentations 290 defined laterally separated by strengthening bridges 292, a lower seat rib 294, and an upper lug ledge or downwardly facing top surface 296.
The spaced apart bridge 292 arrangement imparts improved strength and rigidity capabilities to the upper end 282 of the receptacle 280, which, in turn, improves the crippling strength of the container and the rigidity of the upper end 282 when the collar 300 is fitted together with the receptacle 280. Further optional variations to any of the preceding embodiments can include a modified collar 300 that can be best illustrated with specific reference to
The collar 300 includes an exteriorly or outwardly facing long wall 302 that extends upward to join a substantially rounded portion 304 that can have an increased thickness if needed for stiffening the collar 300. The small relative radius of the J-shaped section shown in the illustrations enables excellent stress distribution and force load path communication by way of a higher cross-sectional moment of inertia, which results in a stiffened and stronger collar. The long wall 302 also forms a part of the upper portions 216d, 218d, 220d, 222d of the walls 216, 218, 220, 222.
The rounded portion 304 extends further and downwardly to form an interiorly or inwardly facing short wall 306. More preferably, the rounded portion 304 will be formed to have a lip seat 305 that enables alignment and improved engagement of the outermost edge 348 of lid “D” when it is closed onto the collar 300. See, for example,
The collar can also preferably incorporate engagement lugs or flex clips 310 that are laterally spaced apart to correspond to the lateral spacing of the indentations 290. The flex clips 310 will incorporate an upwardly facing surface and or a retainer face 312 and can also optionally include a stiffening rib 314. During assembly, the collar 300 will be centered and aligned by the flex clips 310 and thus arranged to fit on, overcap, and or be installed upon the upper end 282 of the tub-shaped receptacle 280 so that the flex clips 310 will bend outwardly slightly as the collar 300 descends over the upper end 282.
Once the flex clips 310 are moved into a juxtaposition relationship with the indentations 290, the flex clips 310 return to the nominal orientation and snap into position so that the retainer faces 312 contact the downwardly facing top surfaces 296 to interlock the collar 300 onto the receptacle 280. In this way, the collar 300 is captured and in a friction-fit and flex clip 310 engaged relationship with the tub-shaped receptacle 280. A bottom end 303 (
The laterally spaced apart indentations 290 and bridges 292 establish a well-distributed load interface between the collar 300 and the receptacle 280 having good rigidity properties when subjected to nominal applications. Additionally, the laterally spaced apart bridges 292 have been found to greatly improve the crippling strength of the assembled collar 310 and receptacle 280 combination. These features combine with the capture and retain capability of the flex clips 310 to hold the collar 300 to the upper portion or upper end 282 of the container 210 and thereby laterally stabilize the collar 300 so that the collar 300 remains in a substantially fixed position relative to the container opening.
In additional optional modifications to any of the embodiments of the invention, the plurality of indentations 292 and the plurality of spaced apart flex clips 310 are further positioned to be oppositely paired across the receptacle 280 to establish force load coupling between the pairs to increase rigidity and structural stability of the sealable containers 10, 210 when the collar 300 is fitted onto the upper end or portion 282. This opposite or confronted pairing establishes a series of coupled moment arm vectors having a distance equal to the diameter, width, and or depth dimension of the container, which greatly improves load distribution across the container 10, 210 and increase the structural stability thereof.
Furthermore, it has been found that these novel features have resulted in an unexpected configuration that overcomes otherwise unacceptable tolerance anomalies and part mismatch between the collar 300 and the upper portion or upper end 282 of the receptacle 280, which greatly reduces rejected parts and which significantly lowers manufacturing costs. More specifically, it is preferred to incorporate the upwardly facing surfaces or retainer lugs 312 to be dimensionally smaller than the downwardly facing surfaces or upper lug ledges 296 of the receptacle 280.
In one aspect, this dimensional arrangement can enable the retainer lugs or upwardly facing surfaces 312 to move within the engagement recesses or indentations 290 and about the upper lug ledges or downwardly facing surfaces 296. This can enable the combination of these components to absorb dimensional tolerance errors and enable the collar to fit around the upper portion of the container. Even more preferably, at least one of the collar 300 and the upper end or portion of the walls 282 are formed from a substantially flexible material such as a polymeric material like polyethylene or polypropylene to enable at least one of the collar and the upper portion of the walls to flex.
Flexibility enables absorption of dimensional tolerance errors, which enables the collar to fit around the upper portion of the container. Also, this can enable at least one of the collar 300 and the upper portion or end 282 of the walls to flex to accommodate shape mismatch between at least one of the collar and the upper portion of the walls to enable the collar to fit around the upper portion of the walls.
In other optional arrangements, the collar 300 can also further incorporate one or more alignment recesses 316 (
When assembled, the collar 310 and the upper end 282 of the receptacle 280 form a subcollar space 320 (
In this particular example, the raised seat 325 can be also thermoformed as the collar 310 is formed or molded, or the raised seat 325 can be formed in a second and or separate thermoforming step that can occur before the gasket 330 is attached. Additionally, the raised seat 325 can be formed in the step at the same time or nearly the same time the gasket 330 is attached. The flexible gasket 330 preferably extends inwardly and interiorly with an internal edge 332.
Preferably, the flexible gasket 330 is dimensioned to project inwardly or interiorly and to removably rest against the sealing flange 284 as depicted in
With specific reference to
Many possible types of material are suitable for use in fabricating the gasket 330. One illustrative example of a suitable material includes a thin polymeric material such as a thermo-plastic elastomer having a durometer strength of approximately 50 or other similar Shore A grade material so that the impervious seal 28 can be easily removed while the flexible gasket is still able to retain some shape memory so that it returns to a biased, sealing, at rest position against the sealing flange 284. For optional applications, Shore A grade material such as a Santoprene and similar compounds have been found to be satisfactory and can be readily thermoformed or injection molded directly onto the inwardly facing short wall 306 and or the raised seat 325.
In other equally preferred and optional variations to any of the embodiments of the invention, the gasket 330 can be integrally formed as part of the collar 300 wherein the gasket 330 is a flap of flexible and thin material that is molded from and that extends from the interior surface of the collar 300. In this contemplated modification to any of the embodiments, among other options, the raised seat 325 can be formed to project inwardly as the gasket 330.
In still other and additional optional arrangements, the gasket 330 can incorporate a number of further capabilities that can improve installation and operation of the gasket 330. In some past efforts to injection mold or melt the gasket 330 onto the raised seat 325, an anomaly can occur, which is termed as leakage, flash, or flashing by those skilled in the arts. In the context of the instant invention, flashing of the gasket 330 may sometimes occur for low durometer materials that may have a tendency to leak from seams between the mold cavities when such a gasket is injection molded into place upon the collar of the container 10.
Such leakage or flashing creates post-molding debris most often about the mold cavity seam lines. In other words, after fabrication, loose and easily separable wisps of flash material may come loose or fall off and contaminate the container and surrounding areas. In this application, such flashing or leakage of the molten polymeric gasket material may be seen proximate to the internal edge 332 (
In some cases, flash can be avoided by using lower molding pressures or by using slower injection flow rates, or by using far more expensive mold cavities that better seal the area where the gasket 330 is to be injection molded, and by combinations thereof. However, beside the implicit cost increase, the more expensive mold cavities that can offer better sealing, often require higher pressures and slower flow rates, which slows manufacturing. Even such more expensive mold cavities wear over time and may lose their improved sealing capability rendering the added cost undesirable
Attempts to solve such flash problems have in the past required a sacrifice in the speed of the manufacturing process, which increases the cost to produce each gasket 330. In one contemplated and particularly desirable configuration, it was discovered that a higher flow rate could be maintained at a lower pressure that avoided the flash problem wherein the gasket 330 was modified to incorporate a substantially circumferential or circumfluent flow management bead, conduit, channel, path, or pad 336. In attempts to achieve success in designing and fabricating a suitable pressure reducing or mold melt flow management conduit or bead 336, a number of other unexpected but highly desirable capabilities where discovered.
One such capability that was observed is that the pressure and flow control path or pad 336 also functioned as a root strengthening feature for the gasket 330 that acted as a stress distribution boss, load distributor, gasket deflection or flexure pad 336, and also as a shape memory retention improvement feature 336 of the gasket 330. Repeated cycling of the gasket 330 in its various modes of operation revealed each of these capabilities as very important and marked improvements over previous attempts at improved performance of the gasket 330. The added gasket deflection or flexure pad or bead 336 enabled much improved gasket shape memory wherein after deflection, such as when seal 28 is removed, the gasket 330 more quickly returned to its pre-deflection, original shape and position to rest against the flange 284.
Initial efforts were aimed primarily at eliminating the flash problem that is sometimes encountered during in-place injection molding and during separate molding and subsequent placement and welding of the gasket 330. Subsequent post-fabrication tests of the operational performance of the gasket 330 were also performed in connection with the removal of the seal 28. In testing, the gasket 330 performed far better than prior attempts when fabricated with the improved flow management channel or stress/shape memory boss and load distributor or bead 336.
Further gasket 330 testing of the in-place molded and pre-molded, placement, and in-place affixing (melt and glue and combination methods) configurations confirms yet other suspected improved capabilities of the gasket 330. To wit, the added root strengthening arrangement also demonstrates drastically improved shear strengthening, which enables faster fabrication injection molding and or placement and welding operations. These various improvements and the resultant, new gasket 330 performance capabilities, lowers production costs while dramatically improving product quality.
Other modifications to the preferred embodiments of the containers 10, 210 can incorporate a modified removable lid such as lid “D” shown in
With this configuration, when the lid “D” is closed on the collar 300 to seal the container 210, the gasket 330, the sealing wall 340, and the sealing flange 284 are dimensioned and positioned so that the sealing wall 340 depresses and biases the flexible gasket 330 against the internal edge 286 of the sealing flange 284 to seal the subcollar space 320 from the container interior “I”. The flexibility and shape memory and strength of the flexible gasket 330 must also withstand repeated opening and closing of the lid “D” and biasing and unbiasing of the gasket 330 by the moving sealing wall 340, so that the flexible gasket remains biased and at rest against the sealing flange 284.
The sealing wall 340 is preferably dimensioned so that when the lid “D” is closed, the sealing wall 340 remains inward of the sealing flange 284. Other optional variations of the position of the sealing wall 340 are contemplated as shown with the dashed line representation of sealing wall 340 shown in
In still other modifications to any of the variations of the preferred embodiments, the sealing wall 340 can be implemented to function with or without the use of a gasket 330 and can include a funneled lower edge 342 such as those shown in
In further preferred variations to the preceding embodiments, the lid “D” more preferably includes a substantially domed central section 344 that has dimensions less than the sealing wall 340. The domed central section is joined to the lid either by the sealing wall, by an angled wall 346, and by a combination thereof, wherein the angled wall 346 tapers from the domed central section down to the interior surface “Di” proximate to the sealing wall 340 (
In the adaptation wherein the substantially domed central section 344 is connected only by the sealing wall 340, essentially the tapered angled wall 346 merges with the sealing wall 340 to have an angle relative to the vertical direction of approximately 90 degrees. The tapered angled wall 346 is in other variations arranged to have an angle relative to a vertical direction of between approximately 10 and approximately 75 degrees, and preferably between about 15 and 60 degrees, and more preferably between about 25 and 45 degrees, and even more preferably approximately 30 degrees. The substantially domed central section 344 extending to the sealing wall preferably is dimensioned to define an area between approximately 20 percent and approximately 80 percent smaller than an entire area defined by the removable lid. Further, the substantially domed central section 344 projects upwardly with a height dimension that is between approximately 10 percent and approximately 60 percent of a cumulative lid height dimension.
These variations of the substantially domed lid have been found to be of significance when the sealable container 210 is in use with powdered contents contained therein. When the container 210 is jostled about and inverted during transit, such as when being transported in the diaper bag of a parent or when being shipped from a warehouse to a retail location while being upside-down and inverted, the powdered contents may collect and become packed into a small mountain resting against portions of the interior surface “Di” of the lid “D”. When such a disoriented container is righted, the angled wall 346 and the sealing wall 340 cooperate to more readily and effectively disengage the collected and or packed contents from the interior surface “Di” of the lid “D” so that the packed or collected contents fall freely down into the interior space “I” of the container 210.
Many factors can contribute to creating an inconvenient accumulation of powder packed into the lid “L” or “D”. Those skilled in the relevant arts often characterize the flowability of a powdered material to be a function of many variables that include particle size and distribution, cohesion, static charge, surface coating, ability to recover from packing or compaction, temperature, humidity, aeration, transportation experience, and container surface effects. Even with so many powder flowability characteristics confronted the manufacturer and the user of container according to the principles of the invention, it has been found that the new and novel angled and or tapered wall 346 of the invention, alone and in combination with the other powder control features described herein, have established a new and previously unseen means of directing powdered contents back into the interior space “H” upon righting of the containers 10, 210.
The arrangement of the flexible gasket 330 biased at rest against the sealing flange 284 further cooperates to mostly if not entirely prevent the contents from entering the subcollar space 320 while directing the contents back into the interior space “I”. Additionally, the arrangement of the flexible gasket 330 and its internal edge 332 extending inwardly beyond the internal edge 286 of the sealing flange 284 also serves to better direct the contents away from the subcollar space 320 and into the interior space “I”. Also, the powder directing capabilities can be further implemented with any combination of the flexible and integral gaskets 330, whether used alone and or in combination with the straight, funneled, curved, and slanted sealing wall 340 variations described above.
In any of the embodiments of the invention where a powder control feature is implemented as described here, significant advantages are achieved by ensuring that powdered and granular contents are dropped into the interior space “H” and away from the interior surfaces “Li” and “Di” of lids “L” and “D”, and are prevented from entering the subcollar space 320
As previously described in connection with earlier embodiment and variations thereof, a living hinge or a mechanical hinge can be used to hingedly and or pivotally attach the lid “D” to the collar 300. Referring to
In another contemplated variation of the preferred embodiments of the invention, the receptacle 280 of the container 210 is further modified to incorporate a means to compensate for changing external pressures due to altitude changes of the sealed container 210. Ordinarily, the container 210 is sealed with impervious seal 28 whereby the pressure in the interior space “I” remains unchanged. However, distribution of container 210 after filling with salable contents creates the probability that the filled containers 210 will experience widely varying pressure changes. Such changes may lead to breach or rupture of the impervious seal 28. A stronger, pressure resistant seal 28 may be undesirable because the user may not have enough strength to open the impervious seal 28.
Accordingly, as can be seen with reference to
The pressure control portion is also referred to as the central raised stiffener portion 350. Contrary to the plain meaning of the word “stiffener”, this phrase refers to features that can be incorporated and which include, for purposes of example without limitation, a flexible and or collapsible pressure relief section.
Extending towards the interior space “I”, the central raised stepped or stiffener portion 350 includes a plurality of steps 354 having riser portions 356 and tread portions 358. The riser portions 356 preferably project in a direction substantially upward relative to the outer planar portion 352 with the tread portions 358 being approximately parallel to the outer planar portion 352.
More preferably, the steps 354 that are formed from the riser and tread portions 356, 358 can form 3, 4, 5 or more or less steps that together can enable an incremental reduction in pressure by the incremental collapse of one or all of the steps so that pressure in the interior space “I” can be lowered to compensate for unequal pressure and to lessen any pressure between the interior space “I” and the external atmosphere. In this way, when a container such as containers 10, 210 are filled with contents at a sea level factory, and the containers are shipped via aircraft or over high-altitude land routes, the impervious seal 28 of the containers 10, 210 may remain intact despite varying external pressures.
Alternatively, the steps 354 can be adapted to have a thickness and or a bellows and or an accordion cross-sectional structure similar to that shown in
Although shown in
This flexible and/or bellows adaptation for the steps 354 can also retain the stackability clearance and spacing of earlier configurations and can do so by generally following the curvature of inclination line 360 (
These stepped arrangements can be used alone or in combination with one or more of the arrangements of
With the multiple stepped arrangement illustrated here, the collapse of one or more steps 354 will preferably not result in the central stepped portion 350 distending beyond the generally level outer planar portion 352. Such pressure differentials may be experienced even without altitude changes. For example, and as discussed elsewhere herein, the containers of the invention may be subjected to external crushing pressures during shipment with a commercial carrier as well as during movement by a parent carrying the inventive in a diaper bag.
The materials of the components of the containers 10 and 200 are not critical. However, certain materials for the components of the container are preferred on account of, for example, such considerations as manufacturing considerations, economic considerations, and consumer considerations. The tub-shaped receptacle typically comprises a multiple-layer material, wherein the multiple-layer material comprises an inner layer, an outer layer and a regrind layer between the inner layer and the outer layer.
Such a multiple layer-material is described in U. S. Patent Application Publication No. 2004/0161558, published Aug. 19, 2004, incorporated herein by reference. The assembly comprising the collar 84 and the lid “L” typically comprises a polymeric material, such as, for example, polypropylene, high-density polyethylene. The scoop typically comprises a polymeric material, such as, for example, polypropylene, high-density polyethylene.
In use, the container 10 or 210 is grasped with a single hand using the enhanced gripping recesses 26a, 26b, 27a, 27b, 226a, 226b, 227a, 227b. The containers 10, 210 are then opened by actuation of the latch 54 and, if necessary for a new container, the impervious seal 28 is removed by grasping the pull tab 28a and pulling the seal 28 away from the sealing flange 284. Next, the user uses his or her free hand to retrieve the scoop 32 from the lid “L” or “D” of the containers 10, 210 to scoop and dispense the contents. The user avoids the inconvenience of powder spilling from the scoop 32 because the bowl 36 was covered by bracket 30a.
Furthermore, any powdered contents that may have come to rest in the lid “L” or “D” prior to opening, was directed away from the subcollar space 320 and into the interior space “H” where it remains ready for dispensing. The container 10 and the scoop 32 together cooperate as a system that enables the user to conveniently use the scoop 32 to remove a predetermined volume or portion of the contents of the container.
After the scoop 32 has been used, the scoop 32 can be reattached to the scoop holder 30 on the lid “L” for all subsequent times the scoop is to be used. The lid is then closed, securing the powder therein. Accordingly, the granular or powdered product will not be spilled, wasted, or contaminated by contact with the hand of the user.
The embodiments of the present invention are suitable for use in many applications that involve manufacture, distribution, storage, sale, and use of flowable substances such as powders and granular materials. The configurations of the inventive container can be modified to accommodate nearly any conceivable type of such materials, and the shape, size, and arrangement of the features and components of the novel container can be modified according to the principles of the invention as may be required to suit a particular type or quantity of flowable material, as well as a preferred mode of use, storage, manufacture, distribution, and or sales environment.
Such modifications and alternative arrangements may be optionally desired to establish compatibility with the wide variety of possible applications that are susceptible for use with the inventive and improved containers for containing flowable materials are described and contemplated herein. Accordingly, even though only few such embodiments, alternatives, variations, and modifications of the present invention are described and illustrated, it is to be understood that the practice of such additional modifications and variations and the equivalents thereof, are within the spirit and scope of the invention as defined in the following claims.
