Patent Application
20110266311
The present invention relates to a container for dosing a free-flowing solid material like granulated solid by pouring. In particular the present invention relates to a container which when a user performs a pouring movement doses a measured dose of a predetermined size.
Easy and reliable metering of doses of free-flowing solid material is a key issue in many industrial and house hold situations. This is especially the case when deviations from a preferred or optimal dose will have unwanted effects such as serious or even lethal consequences. However, correct metering is also relevant in a lot of other situations e.g. in relation to minimizing costs and preventing pollution.
Accordingly, devices for automatic metering have been developed in which containers for storage of the substance have metering means incorporated therein.
One such example may be seen in U.S. Pat. No. 2,801,034 which discloses a metered dosing container with a metering chamber and a plurality of dosing channels, which may be opened simultaneously or individually in order to dispense a larger or smaller dose. One disadvantage of the invention according to U.S. Pat. No. 2,801,034 is that the user manually may have to cover one of the outlets by hand in order to achieve the desired dose. Another disadvantage of the invention according to U.S. Pat. No. 2,801,034 is that for each dosing by means of one of the dosing channels, even more of the free-flowing solid material is filled into the other dosing channel, whereby the dose is incorrectly metered when said other dosing channel is used the next time.
It is an object of an embodiment of the present invention to provide a dispensing container allowing the user to choose and dispense a dose using only one hand.
Moreover, it is an object of an embodiment of the present invention to provide a dispensing container providing a correct dose each time the container is used, regardless of which of its dosing channels have been used most recently.
It is furthermore an object of an embodiment of the present invention to provide a dispensing container where the user can change the predetermined size of the measured dose.
The present invention relates to a container for dosing a free-flowing solid material like granulated solid by pouring, the container comprising:
One advantage of the present invention is that pouring by means of one of the dosing channels will not cause the metered content contained in any of the remaining dosing channels to be dispensed, as the content instead of being emptied out through the respective outlets, returns to the storage chamber as it flows into the storage chamber through the inlet. Another advantage is that the metered dose in the dosing channel is not gradually increased when another dosing channel is used, as the content of any of the remaining dosing channels (upon completing the pouring movement) has a volume lower than the volume of a metered dose, for the respective channel, whereby repositioning the container to its upright position after pouring will simply cause a correct dose to be metered.
In one embodiment, the dosing channels are positioned relative to each other such that during use, the inlet of an active pouring channel, by means of which the metered dose is being poured, may be positioned at a point below the remaining inlets during at least a part of the pouring movement.
Free-flowing solid material is the term used for the material to be dosed. The material may be in the form of powders, granulates, pills or the like, for example washing powder, dried food for animals, fertilizers, different types of food material like breakfast cereals, grits, oats, etc.
In the context of the present invention terms like horizontal, vertical, upper, lower, top, bottom etc. shall—unless otherwise stated—be used to describe the container in a situation in which the container is positioned in an upright position on a horizontal surface i.e. in a situation in which a bottom surface of the container is contacting said horizontal surface. However, the skilled person will readily realize that the container may be positioned in any other way and will indeed be so during pouring of the free-flowing solid material.
The inner chamber defines an inner surface defined by respective inner surfaces of the bottom, the sidewall and the top. In one embodiment, the container may be defined by a base part defining the bottom and the sidewall, and a lid defining the top. The base part defining the sidewall and the bottom may define a monolithic element (i.e. one element without seams separating the bottom and the sidewall). In one embodiment, the lid is permanently fastened to the base part e.g. by welding or gluing or interference fit. In another embodiment, the lid is detachably fastened to the base part, which allows for removal of the lid such that the container may be refilled. In an alternative embodiment, the lid comprises a refill inlet which may be closed during normal use of the container so as to prevent the free-flowing solid material from being poured out of refill inlet, while pouring through one of the pouring channels/outlets.
In one embodiment, the inner chamber defines a storage chamber and two or more dosing channels. A general/longitudinal direction of at least one of the dosing channels may extend vertically inside the container. In one embodiment, the longitudinal direction of all the dosing channels extends in the vertical direction of the container. In one embodiment, one or more, such as all, of the dosing channels extend along the inner sidewall of the container, such that the inner sidewall of the container defines an inner surface of the dosing channel.
The container comprises two or more dosing channels, such as three, such as four, such as five. Each of the dosing channels is adapted to dose a metered dose of a predetermined size. In one embodiment, the sizes of at least two of the metered doses are different. In one embodiment, none of the metered doses are identical in size.
The inlet of one or more of the dosing channels may be provided in the lower half of the container, such as in the lower third, such as in the lower quarter. Additionally, the outlets of the dosing channels may be provided in the upper half of the container, such as in the upper third, such as in the upper quarter. The outlets may be defined in the top and may comprise means for closing the outlet e.g. such that moisture may be prevented from entering the container when the container is not used. In one embodiment, each means for closing one of the outlets is pivotally connected to the top such that the outlet automatically opens during pouring.
As previously mentioned, each of the dosing channels are adapted to dose a metered dose during a pouring movement of the container in an—for the respective dosing channel—optimal pouring direction. It will be appreciated that the optimal dosing direction is different for each of the dosing channels so as to allow a user to pour a metered dose by means of one dosing channel without simultaneously dosing with one of the other dosing channels.
In one embodiment, the pouring direction of at least one (such as each) of the dosing channels extends from a geometrical centre of a horizontal cross section of the container through the representation of the respective dosing channel in said horizontal cross-section. In the latter embodiment, a metered dose may be poured by means of the respective channel, by rotating the container about a normal of a vertical plane extending through the dosing direction.
In one embodiment, the inlets are positioned relative to each other such that two lines extending from the centre of gravity and/or the geometrical centre of the container to the geometrical centre of two different inlets define an angle which is above 60 degrees.
In one embodiment, the angle is in the range 160-180 degrees whereby the two inlets are positioned substantially opposite each other.
In one embodiment, the cross section of the container in the horizontal plane defines a triangle in which the dosing channels are defined in the corners of the triangle. The length of the three sides of said triangle is in one embodiment substantially identical, while they in others embodiments have different lengths.
The cross-sectional shape of the container may define any other polygonal shape such as a quadrangle, and the dosing channels may be defined in the corners of such polygonal cross sections. In another embodiment, the cross-section may be round. The container may comprise a metal material or a plastic material and may be reinforced by fiber glass, Kevlar or the like.
The outlets may be defined in the top of the container. Alternatively, the outlets may be defined in the upper part of the sidewall.
In order to allow the container to dispense doses of different size, the cross-sectional area of at least two of the inlets may be different in size, and/or the vertical position of at least two of the inlets may be different. In one embodiment, the cross-sectional area of each of the inlets is different than the cross-sectional area of any of the remaining inlets, and/or the vertical position of each of the inlets is different than the vertical position of any of the remaining inlets.
In one embodiment, each of the channels defines a metering zone which is filled up with the free-flowing solid material when the container is in its upright position. In one embodiment, the upper boundary of the metering zone is defined by the uppermost part of the inlet. When a dose is dispensed the metering zone is emptied as the free-flowing solid material located in the zone flows out of the dispensing channel and exits the container thought the outlet associated with the respective dosing channel. When the container again is positioned in its upright position, the free-flowing solid material flows into the metering zone such that a new dose may be dispensed. It will be appreciated, that in some embodiments the free-flowing solid material flows into the metering zone during the movement of the container from a substantially horizontal position to a substantially vertical/upright position. Moreover, it will be appreciated that the volume of the metering zone is decisive for the size of the dose dispensed. In most embodiments, the volume of the metering zone is substantially equal to the volume of the dose which is dispensed by means of the dosing channel associated with the respective metering zone.
In one embodiment, the inlets are positioned symmetrically relative to a vertical plane extending through the centre of the top and the bottom, i.e. opposite each other relative to the plane.
In one embodiment, each of the inlets is defined by a first and a second dividing wall which are spaced apart inside the inner chamber and are arranged with respect to each other such that the lower surface (e.g. defined by the lower edge) of the first dividing wall and the upper surface (e.g. defined by the upper edge) of the second dividing wall are provided at substantially the same horizontal plane. In one embodiment, the second dividing wall is provided closer to the centre of the container than the first dividing wall, whereby the inlet defined by the two walls extends radially outwards from the upper surface of the second (inner) dividing wall to the lower surface of the first (outer/lateral) dividing wall.
In one embodiment the container for dosing a free-flowing solid material by pouring comprises:
As the volume of the metering zone is determined by the first and/or second dividing walls, at least one of the dividing walls may in one embodiment be adapted to allow a user to change its configuration inside the inner chamber. In one embodiment, the second dividing wall is adapted to be moved inside the container. As an example, the container may define a plurality of grooves for receiving the second dividing wall. Accordingly, the user may change the position of the dividing wall and thus increase or decrease the metering volume.
Accordingly, at least one of the dividing walls may be movable horizontally and/or vertically inside the inner chamber so as to allow a user to change the predetermined size of the measured dose which may be dosed by means of the channel which is at least partly defined by the respective first and second dividing walls.
In one embodiment, the first dividing wall comprises a sliding wall. Accordingly, the user may extend the first wall and thus reduce the metering volume. The sliding wall may have the full height of the container and the user may then pull the sliding wall upwards to correspond to the desired dose. In one embodiment, the sliding wall may have a lower height than the height of the container, and thereby it will be possible for the user to choose a dose and pull the sliding wall upward without pulling the sliding wall over the upper edge of the container.
In one embodiment, the first dividing wall or part of it, such as a sliding wall, is movable up and down by sliding the wall in two oppositely placed grooves. Grooves provide one possible solution, but other features for supporting the wall may be chosen.
In one embodiment, the sliding wall is sliding against the first dividing wall. The first dividing wall and the sliding wall may comprise securing means preferably having form as a groove and a protrusion.
In one embodiment, the sliding wall is provided with projections or grooves which engage corresponding projections or grooves in the first dividing wall. These projections or grooves may be made to correspond to specific doses. When the sliding wall is moved, it will stop at this specific dose and the user will need extra force to move the sliding wall further. This arrangement secures that, when a user performs a pouring movement, he gets measured dose of a predetermined size.
In one embodiment, the sliding wall comprising grips for helping the user to change the position of the sliding wall in the container.
In one embodiment, the sliding wall may be marked with different portion sizes, hereby it will be easy for the user to select a desired dose.
Examples of the invention will now be described in further detail with reference to the drawings in which:
The container 100 comprises a lower part 102 defining a sidewall 104 and a bottom 106, and a top 108 defining two closures 110,110′. Each of the closures 110,110′ is arranged to cover/close a dosing channel 112,112′ defined in the lower part 102 and the top 108. Each dosing channel 112,112′ is defined by a part of the sidewall 104, a first dividing wall 114,114′ and a second dividing wall 116,116′.
Moreover, each of the dosing channels 112,112′ defines a metering zone 118,118′. The metering zones 118,118′ are illustrated by the hatched areas in
In the embodiment of the figures, the upper surface of the second dividing wall 116,116′ and the lower surface of the first dividing wall 114,114′ of each dosing channel 112,112′ are provided in substantially the same horizontal plane and together define an inlet 120,120′ of the dosing channel 112,112′. After each dosing with one of the dosing channels 112,112′, the free-flowing solid material flows into the respective metering zone 118,118′ through the respective inlet 120,120′. In the opposite end of each dosing channel 112,112′, an outlet 122,122′ is provided through which the dose of free-flowing solid material exits the container 100 during dispensing.
In the following, use of the container is described with reference to
It will be appreciated that a small dose is achieved by tilting the container 100 to the right in the figure, whereby the free-flowing solid material located in the small metering zone 118 will flow inside the dosing channel 112 and out through the outlet 122 associated therewith. Moreover, it will be appreciated that the content of the large metering zone 118′ will be emptied into the storage chamber 124 during dispensing of the small dose.
The dividing wall comprising the sliding wall may have a form as disclosed in
While the present invention has been illustrated and described with respect to a particular embodiment thereof, it should be appreciated by those of ordinary skill in the art that various modifications to this invention may be made without departing from the spirit and scope of the present.
| Number | Date | Country | Kind |
|---|---|---|---|
| PA 2008 01463 | Oct 2008 | DK | national |
| PA 2009 00827 | Jul 2009 | DK | national |
This application is entitled to the benefit of and incorporates by reference essential subject matter disclosed in International Patent Application No. PCT/DK2009/000220 filed on Oct. 16, 2009 and Danish Patent Application Nos. PA 2008 01 463 filed on Oct. 21, 2008 and PA 2009 00827 filed Jul. 3, 2009.
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/DK2009/000220 | 10/16/2009 | WO | 00 | 4/12/2011 |
