The invention relates to containers and dispensers for powdered or granulated products and substances, especially powdered or granulated products and substances prone to clumping behavior. More particularly, the invention is directed to a fitment and container configured to promote pouring the powdered or granulated products from the container in a stream having a consistent and predictable rate of flow, despite the presence of clumps of the powdered or granulated product in the container.
Certain powdered and granulated materials, including some pharmaceutical products, are susceptible to irregularly-shaped and randomly-sized clumps (or clusters) forming therein as a result of coming into contact with moisture while the powdered products are being used, stored or transported. The moisture may enter the container by gradual diffusion through microscopic gaps in the walls and seals of the containers, and/or may be trapped inside the containers when the containers are originally filled and sealed. When a user tilts the container at an angle in order to pour some of the powdered or granulated product out of the mouth of the container and into a dosing or measuring device, such as a measuring cup or spoon, the tilting action causes a stream of powdered or granulated product to flow out of the mouth of the storage or transport container and into the dosing or measuring device. As would be natural for such a pouring operation, the user will typically watch and observe the size, angle and shape of the stream, along with the level of powdered or granulated product already present in the dosing or measuring device, in order to judge the apparent flow rate of the powdered or granulated product exiting the tilted container and to estimate whether and when to adjust the angle of tilt on the container in order to avoid spilling and wasting the product and/or over- and under-filling the dosing or measuring device. If the powdered or granulated product is a medication, over- or under-filling the dosing or measuring device could lead to over- or under-dosing the medication, which could have severe consequences for medical patients.
When the stream of powdered or granulated product flowing from the mouth of the container contains irregularly-shaped and randomly-sized clumps, however, the clumps tend to cause random and unpredictable changes in the size, angle and shape of the stream as it exits the mouth of the container. Moreover, as the stream of powdered or granulated product passes out of the mouth of the container, the clumps can come into contact with the interior surfaces of the mouth of the container just before exiting the container, which may cause some of the clumps to get caught on the interior surfaces and temporarily obstruct or restrict the rate at which the stream flows out of the mouth of the container. In addition, some of the clumps in the stream may collide with other clumps in the stream just as the clumps are exiting the container. The collisions may cause some of the clumps to break apart as they exit the container, further changing the size, angle and shape of the stream in random and unpredictable ways.
Thus, it has been observed that when a powdered or granulated product is poured from a container in a stream, the presence of irregularly-shaped and randomly-sized clumps in the stream, combined with the random catching, releasing, colliding and/or breaking apart of the clumps just as the clumps are exiting the mouth of the container, causes random and unpredictable variations in the size, angle and shape of the stream so that it becomes very difficult for the user to properly judge the rate of flow for the stream, and very difficult to estimate when the angle of tilt for the container should be increased or reduced so as to avoid under- or over-filling the dosing or measuring device.
In general, embodiments of the present invention provide a container fitment, or a container, such as a bottle, can, box, carton, or dispenser, for a powdered or granulated product, which is configured to break apart irregularly-shaped and randomly-sized clumps of the powdered product before the clumps can flow through the pour spout and pass out of the mouth of the container, thereby tending to promote a constant and well-defined stream of product as it exits the mouth of the container, as well as a consistent and predictable rate of flow in the stream during pouring. The constant, well-defined stream and the consistent and predictable flow rate of the stream permits the user to more easily judge when to change the angle of the container during the pouring operation, and thereby avoid unnecessary and wasteful spills.
According to one aspect of the invention, there is provided a fitment for a container of powdered product prone to clumping behavior, comprising a stopper, a pour spout, a restriction associated with the pour spout and a baffle. The stopper is configured to be interposed or lodged in the passageway (i.e., the neck or throat of the bottle) between the mouth of the container and interior chamber, thereby closing off the passageway to the flow of powdered product until the pour spout in the stopper is opened or unsealed prior to performing a pouring operation. The pour spout in the stopper extends entirely through the stopper so that, when the pour spout is open and the container is tilted to perform a pouring operation, the pour spout permits a portion of the powdered product in the interior chamber of the container to flow through the pour spout—and therefore through the passageway—and then out of the mouth of the container in a stream. One or more baffles are connected to the stopper, the baffles extending toward the interior chamber of the container and arranged to project into and penetrate the portion of the powdered product moving into the passageway made passable by the open pour spout. Thus, the baffles are arranged to lie in the path of some of the powdered product moving into the passageway, which causes some of the particles in the portion of powdered product flowing into the passageway to flow over and around the distal ends of the baffles. If there are any clumps of powdered product in the portion of powdered product flowing over and around the distal ends of the baffles, these clumps are likely to be broken apart by the baffles before the clumps can reach the pour spout and flow out of the mouth of the container.
Preferably, the stopper, the pour spout, or both the stopper and the pour spout, will comprise one or more restrictions configured to limit the volume of powdered product permitted to flow through the pour spout. Such restrictions may comprise, for example, a flange, filament, edge or finger in the stopper or the pour spout, which is arranged to make contact with and potentially filter and impede some part of the volume of powdered product flowing through the pour spout, whereby one or more clumps of powdered product in the volume of powdered product permitted to flow through the pour spout will be broken apart by contact with the restriction before flowing out of the mouth of the container. Thus, the restriction tends to break apart clumps of the powdered product that were not broken apart by the baffles as those clumps flowed past the baffles and into the pour spout.
The pour spout may comprise, for example, an asymmetric opening extending through a section of the stopper off the longitudinal axis of the stopper, a circular opening having a center axis that substantially coincides with the longitudinal axis of the stopper, a plurality of parallel openings extending through the stopper, or any one of any number of other apertures or voids suitable permitting powdered product to flow through the passageway connecting the interior chamber of the container to the mouth of the container.
Any number of baffles can be used in a variety of different sizes and orientations, so long as the baffles are arranged, relative to the pour spout, to increase the likelihood that the baffles will come into contact with the portion of powdered product moving toward and through the passageway during a pouring operation. Thus, a plurality of baffles may be connected to the stopper, the plurality of baffles extending toward the interior chamber of the container and arranged to penetrate the portion of powdered product, whereby, upon contact with one or more of the plurality of baffles, one or more of the clumps of powdered product in the portion of powdered product flowing into the passageway will be broken apart by one of more of the plurality of baffles. The plurality of baffles may be configured to run parallel to each other, not parallel to each other, or arranged to converge toward a single point on the stopper. The plurality of baffles may also be arranged to surround the pour spout extending through the stopper.
In another implementation of the present invention, there is provided a container for a powdered product prone to clumping behavior, the container comprising an interior chamber, a mouth, a passageway between the interior chamber and the mouth, a pour spout and one or more baffles attached to the stopper and extending into the passageway. The stopper is configured to be interposed in the passageway between the interior chamber of the container so as to impede the flow of powdered product from the interior chamber to the mouth. The pour spout extends through the stopper and, when the container is tilted for a pouring operation, permits a portion of the powdered product in the interior chamber to flow through the passageway and out of the mouth of the container in a stream. Because the powdered product is prone to clumping behavior, it is likely that the portion of powdered product moving toward and flowing into the passageway as a result of tilting the container will have one or more clumps. Accordingly, the baffles are attached to the stopper, or, alternatively, to the interior walls of the passageway, so that the baffles will project into and penetrate the portion of powdered product moving through the passageway during the pouring operation.
Upon contact with the baffle, a number of the clumps in the portion of powdered product flowing into the passageway will be broken apart before they can reach the pour spout and pass out of the mouth of the container. In preferred embodiments, a restriction is provided in the pour spout, the passageway or the stopper, which is configured to come into contact with and limit the volume of powdered product that can flow through the pour spout. Upon contact with the restriction, at least some of the clumps of powdered product that succeed in flowing past the baffles without being broken apart will be broken apart upon contact with the restriction. Thus, the containers of the present invention may be configured and arranged to provide two separate mechanisms for breaking apart clumps during a pouring operation, thereby promoting the desired consistent rate of flow for the stream of powdered product exiting the container. Although some small clumps in the powdered product may succeed in passing through the pour spout without being broken apart by the baffle or the restriction, such small clumps are typically not large enough to create an inconsistent rate of flow in the stream of powdered product exiting the container.
The present invention and various aspects, features and advantages thereof are explained in detail below with reference to exemplary and therefore non-limiting embodiments and with the aid of the drawings, which constitute a part of this specification and include depictions of the exemplary embodiments. In these drawings:
As shown in
If the individual performing the pouring operation sees the product 4 falling short of the dosing or measuring device, and does not understand that one or more clumps are obstructing the mouth 14, then he or she is likely to think it is appropriate and necessary to increase the pouring angle of the container 6, or, even worse, begin to shake the container 6, in an effort to increase the flow rate of stream 22 and re-acquire the flow rate that was determined to be optimal for pouring the powdered product 4 into the dosing or measuring device 10. This action of shaking the container 6 or increasing the tilting angle of the container 6 will increase both the velocity at which the clumps 12a, 12b and 12c strike the interior surfaces of the throat 30, as well as the effective weight of the product 4 behind and pushing against the clumps 12a, 12b and 12c, which may reduce the time required to break up the clumps 12a, 12b and 12c and/or force the clumps through the mouth 14. The instant that the clumps 12a, 12b and 12c strike the interior surfaces of the throat 30 or the lip 28 of the container 6, however, the loose bonds holding the clumps 12a, 12b and 12c together can suddenly give way, thereby causing the clumps 12a, 12b and 12c to suddenly break apart, suddenly and forcefully releasing the powdered product 4 in the clumps 12a, 12b and 12c, just as the clumps 12a, 12b and 12c are passing over the lip 28 through the mouth 14. The sudden release of the product 4 comprising the clumps 12a, 12b and 12c causes a sudden increase in the amount of product 4 passing out of the mouth 14 of the container 6, and a sudden change in the angle, size and geometry of the stream 22, which is likely to be unexpected by the individual performing the pouring operation. This sudden and unexpected change in the rate of flow, size and geometry of the stream 22 exiting the container 6 through the mouth 14 could cause the stream 22 exiting the container 6 to overshoot the dosage and measuring device 10, as illustrated in
Even if the clumps 12a, 12b and 12c pass through the mouth 14 of the container 6 without striking the interior surfaces of the throat 30 or the lip 28 of the container 6, the presence of the clumps 12a, 12b and 12c in the stream 22 can still cause random and unpredictable changes in the cross-section and geometry of the stream 22, as illustrated in
As shown in
In some embodiments, the rim or edge surrounding the aperture comprising the pour spout 16 acts as a restriction 24 configured to limit the volume of powdered product 4 permitted to flow through the pour spout 16. Thus, like the baffles extending into the interior chamber 20, the restriction 24 surrounding the pour spout 16 is optionally configured to extend into the path of the portion of powdered product flowing through the pour spout and, consequently, partially obstruct the flow of powdered product 4 through the pour spout 16. As illustrated in
The fitment 2 can be attached to the container 6 by sealing the fitment 2 over the mouth 14 of container 6 by pressure fitting, heat sealing or adhesive, for example. Alternatively, if the container 6 has an elongated section, i.e., a throat 30, leading to the mouth 14, then the fitment 2 can be configured to remain securely lodged inside the throat 30 of the container 6 by virtue of opposing forces, such as one or more equally-spaced scallops 11 (illustrated in
As previously described, one or more baffles 26 extending toward the interior chamber 20 of the container 6 may be connected to the bottom surface 34 of the stopper 8. It is noted, however, that in certain embodiments, the baffles 26 may also be connected to the sidewall 9 of the fitment, thereby avoiding direct connection with the stopper 9 itself, without departing from the scope of the claimed invention. These baffles 26 are configured to penetrate and direct the flow of powdered product 4, including clumps 12a, 12b and 12c, in the container 6 towards the pour spout 16 when the fitment 2 is located within the throat 30 of the container 6. The number and orientation of the one or more baffles 26 may be selected from any number of alternatives, depending, for example, on the potential sizes of the clumps 12a-12f in the powdered product 4, as well as the sizes and dimensions of the container 6 and the mouth 14 of the container 6. As contemplated herein, each baffle 26 may comprise a top, a bottom and sides. In practice, the tops of the one or more baffles 26 are connected to the bottom surface of the stopper 8 and the bottoms of each one of the one or more baffles 26 extend into the interior of the container 6. The sides of the one or more baffles 26 can be flat or rounded or comprise flat sections and rounded sections. The baffles 26 can vary in thickness and length, depending, for example, on the desired shape of the pour spout 16 in the fitment 2.
As shown in the example embodiments in
Although the exemplary embodiments, uses and advantages of the invention have been disclosed above with a certain degree of particularity, it will be apparent to those skilled in the art upon consideration of this specification and practice of the invention as disclosed herein that alterations and modifications can be made without departing from the spirit or the scope of the invention, which are intended to be limited only by the following claims and equivalents thereof.
This application is a §371 National Stage Application of PCT/US2013/041752, filed on May 20, 2013, which claims priority from U.S. Provisional Application Ser. No. 61/791,036, filed on Mar. 15, 2013 and U.S. Provisional Application Ser. No. 61/649,618, filed on May 21, 2012.
Filing Document | Filing Date | Country | Kind |
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PCT/US2013/041752 | 5/20/2013 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2013/177009 | 11/28/2013 | WO | A |
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2173542 | Simington | Sep 1939 | A |
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2921724 | Whitney | Jan 1960 | A |
3151781 | McKee | Oct 1964 | A |
3424351 | Rusak, Jr. et al. | Jan 1969 | A |
3773232 | Hidding | Nov 1973 | A |
6364169 | Knickerbocker | Apr 2002 | B1 |
20070007310 | Antal, Sr. | Jan 2007 | A1 |
20070145082 | Parve | Jun 2007 | A1 |
Entry |
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International Search Report and Written Opinion for PCT/US2013/041752 mailed on Oct. 4, 2013; 7 pages. |
Number | Date | Country | |
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20150041423 A1 | Feb 2015 | US |
Number | Date | Country | |
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61649618 | May 2012 | US | |
61791036 | Mar 2013 | US |