1. Field of the Invention
Embodiments of the present invention relate to the field of dispensers. More particularly, embodiments of the present invention involve a dispenser for maintaining a food ingredient or other contents in an air-tight storage arrangement and conveniently dispensing a portion of the contents with minimal exposure of the remaining stored contents to ambient air.
2. Description of Prior Art
Coffee grounds, drink mixes, and other food items or ingredients tend to degrade in quality when exposed to ambient air. Continuous exposure to ambient air, for example, cause coffee grounds to lose flavor, and exposure to ambient humidity can cause drink mixes and other powders to crystalize, rendering them difficult or impossible to use.
Containers for such ingredients often provide airtight seals, but such seals must be broken, at least temporarily, to access the ingredients. Coffee grounds, for example, can be purchased in a can that is capped with a plastic lid after opening. The plastic lid forms a temporary air-tight seal, but when the user wishes to access the coffee grounds to make more coffee the lid must be removed, newly exposing the coffee grounds in the can to ambient air. Repeatedly exposing the coffee grounds to ambient air in this manner causes the coffee grounds degrade in quality.
Accordingly, there is a need for an improved dispenser that does not suffer from the problems and limitations of the prior art.
The present invention provides an improved dispenser for substances that benefit from isolation from the ambient air. Particularly, the present invention provides a dispenser for maintaining a food ingredient or other contents in an air-tight storage arrangement and conveniently dispensing a portion of the contents with minimal ambient air reaching the remaining stored contents.
The dispenser includes a hopper for storing dispenser contents, a removable hopper lid forming a substantially air-tight seal with the hopper, and a dispensing chamber. The dispensing chamber includes a first door for allowing the contents to pass from the hopper to the chamber when open and forming a substantially air-tight seal between the chamber and the hopper when closed, a second door for allowing the contents to leave the chamber when open and retaining the contents in the chamber when closed, and a measuring mechanism for measuring an amount of contents in the dispensing chamber.
These and other important aspects of the present invention are described more fully in the detailed description below.
An embodiment of the present invention is described in detail below with reference to the attached drawing figures, wherein:
A dispenser incorporating principles of the present teachings is illustrated in
Referring also to
Each of the illustrated plurality of face sections 26 is substantially rectangular with a width preferably within the range of about two inches to about sixteen inches, more preferably within the range of about three inches to about twelve inches, even more preferably within the range of about four inches to about eight inches, and most preferably about five and one-half inches. Each face section 26 has a height that is preferably within the range of about two inches to about sixteen inches, more preferably within the range of about three inches to about twelve inches, even more preferably within the range of about four inches to about eight inches, and most preferably about six inches.
The face sections 26 are interconnected by the plurality of corner sections 28. Each of the corner sections 28 has approximately the same height as the face sections 26. For example, if the face sections 26 are each six inches tall, the edge sections 28 are also about six inches tall. Each of the corner sections 28 has a width that is generally less than that of the face sections 26. The width of each of the corner sections 28 is preferably within the range of about one-fourth of an inch to about three inches, more preferably within the range of about one-half inch to about two and one-half inches, even more preferably within the range of about three-fourths of an inch to about two inches, and most preferably about one inch. Each of the illustrated face sections 26 is at a 90° angle to the two adjoining face sections 26. Each corner section 28 forms a 135° angle with each face to which it is connected. One or more of the face sections 26 may include a transparent portion 30 to allow a user to view the contents of the hopper 12 in order to ascertain an amount of the contents.
The sloping peripheral wall 32 extends inwardly from the base 22 of the first peripheral wall 20 toward a top portion of the dispensing chamber 16 to form a funnel that directs contents of the hopper 12 into the dispensing chamber 16. Thus, the top 34 of the sloping peripheral wall 32 adjoins the base 22 of the first peripheral wall 20, and the base 36 of the sloping peripheral wall 32 adjoins a top of the dispensing chamber 16.
The first peripheral wall 20 and the sloping peripheral wall 32 illustrated and described herein are exemplary in nature. Those skilled in the art will recognize that the hopper 12 may present virtually any shape including, for example, a square, round, ovular, or other shape, including arbitrary shapes.
The lid 14 includes a web portion 38 and a downwardly-opening channel 40 that engages the upper edge 24 of the first peripheral wall 20 to create an air-tight or substantially air-tight seal. The channel 40 is substantially continuous and is proximate a periphery of the lid 14. The lid 14 includes a handle 42 to facilitate removal of the lid from the hopper 12. The channel 40 of the lid 14 should have a depth sufficient to allow a snug, air-tight or substantially air-tight connection between the lid 14 and the first peripheral wall 20. The depth of the channel 40 is preferably within the range of about 0.010 inches to about 1.0 inches, more preferably within the range of about 0.1 inches to about 0.8 inches, even more preferably within the range of about 0.2 inches to about 0.5 inches, and most preferably about 0.25 inches.
It will be appreciated that the illustrated channel 40 is only one exemplary means of creating an air-tight or substantially air-tight seal between the lid 14 and the wall 20, and that various other implementations of the present teachings may be used to create an air-tight seal between the lid 14 and the wall 20 without departing from the scope of the claimed invention. For example, a gasket (not shown) may be secured to the lid 14, to the wall 20, or both, to ensure a snug, air-tight fit between the lid 14 and the wall 20. Such a gasket may be used instead of or in addition to the channel 40.
The dispensing chamber 16 generally defines a passage out of the hopper 12 through which the contents 18 of the hopper 12 pass when dispensed. The dispensing chamber 16 further provides an air-tight or substantially air-tight seal when closed to minimize exposure of the contents remaining in the hopper 12 to ambient air. The dispensing chamber 16 further includes a measuring mechanism for measuring an amount of contents in the chamber 16 to assist users in controlling the amount of contents 18 dispensed from the hopper 12.
The dispensing chamber 16 includes a peripheral chamber wall 44 that includes a first side 46, a second side 48, a third side 50, and a fourth side 52. At least a portion of the chamber wall 44 may be substantially transparent to allow a user to view the contents of the dispensing chamber 16, which is useful to enable the user to regulate the amount of contents 18 dispensed. The illustrated transparent portion 54 is located on the first side 46 of the peripheral chamber wall 44 and includes a plurality of measurement indicia 56, discussed in greater detail below.
The illustrated chamber wall 44 presents a generally rectangular footprint and each side 46, 48, 50, 52, of the wall 44 is generally rectangular in shape. Specifically, the illustrated chamber wall 44 is substantially cube-shaped. The length, width, and height of the illustrated chamber wall 44 is each preferably within the range of about one inch to about five inches, more preferably within the range of about two inches to about four inches, and most preferably about three inches. Thus, the dispensing chamber 16 is generally smaller than the hopper 12.
The illustrated measurement indicia 56 are presented on the transparent portion 54 of the wall 44 and represent fill level marks that indicate an amount of the contents 18 in the dispensing chamber 16. The measurement indicia 56 may indicate, for example, one or more units of measurement, such as one-fourth of a measuring cup, one-half of a measuring cup, three-fourths of a measuring cup, and one measuring cup. Alternatively, the measurement indicia 56 may indicate an amount of contents corresponding to a specific mixing regimen such as, for example, one cup of brewed coffee, two cups of brewed coffee, three cups of brewed coffee, and so forth. The measurement indicia 56 may be on the transparent portion 54 of the wall 44 as illustrated, or, alternatively, may be on an outer surface of the chamber wall 44 other than the transparent portion 54 or on an inner surface of the chamber wall 44 other than the transparent portion 54. Furthermore, any combination of these locations may be used.
The dispensing chamber 16 includes an upper door slot 58 and a lower door slot 60. The upper door slot 58 is generally located proximate an entrance of the dispensing chamber 16, while the lower door slot 60 is located proximate an exit of the dispensing chamber 16. As explained below in greater detail, the upper door slot 58 and the lower door slot 60 are each approximately the same size as a cross section of a corresponding door to provide a snug, substantially air-tight fit. While the upper door slot 58 and the lower door slot 60 are illustrated on the first side 46 of the chamber wall 44, it will be appreciated that the door slots 58, 60 may be located on any side of the peripheral chamber wall 44 and each door slot 58,60 may be located on a different side. Such alternative implementation is well within the scope of the claimed invention.
Referring particularly to
The upper rib 62 presents a substantially continuous, inwardly-opening upper channel 64 aligned with the upper door slot 58 such that when a flat upper door 66 is inserted through the upper door slot 58 it is entrained in the upper channel 64. The upper rib 62 includes an upper lip 74, an upper surface 76 of the upper lip 74, and a lower lip 78. The upper lip 74 extends inwardly further than the lower lip 78, and the upper surface 76 of the upper lip 74 slopes generally downwardly and inwardly from the chamber wall 44 to an innermost edge of the upper rib 62. The sloping upper surface 76 prevents contents from getting stuck on the surface 76. Because the upper lip 74 overhangs the lower lip 78, contents passing into the dispensing chamber 16 from the hopper 12 fall past the upper channel 64, thus avoiding content accumulation in the upper channel 64.
The dispensing chamber 16 further comprises a lower rib 68 that is substantially similar to the upper rib 62, except that the lower rib 68 is located near an exit of the dispensing chamber 16. The lower rib 68 includes an upper lip 80, an upper surface 82 of the upper lip 80, and a lower lip 84. As with the upper rib 62, the upper lip 80 and the lower lip 84 of the lower rib 68 define an inwardly-opening lower channel 70, wherein the upper lip 80 extends inwardly further than the lower lip 84, such that contents passing over the lower rib 68 and out of the dispensing chamber 16 fall past the lower channel 70, thus avoiding content accumulation in the lower channel 70.
The upper door 66 is substantially flat and sized to fit snugly within the upper door slot 58 and the upper channel 64 such that when in a closed position the upper door 66 prevents contents from passing from the hopper 12 to the dispensing chamber 16 and creates an air-tight or substantially air-tight seal between the dispensing chamber 16 and the hopper 12. Likewise, the lower door 72 is substantially flat and sized to fit within the lower channel 70 such that when in an opened position, contents of the dispensing chamber 16 are allowed to exit a bottom of the dispensing chamber. When in the closed position, the door 72 creates an air-tight or substantially air-tight seal between the dispensing chamber 16 and the environment surrounding the dispenser 10.
Referring particularly to
The dispenser 10 may be constructed of a variety of different materials including, for example, plastic, nylon, rubber, and metal. Use of a flexibly rigid material for the channel 40 and the wall 20 may enhance the air-tight seal between the channel 40 and the wall 20. In a first exemplary implementation, the dispenser 10 is constructed entirely of plastic. In a second exemplary implementation, the dispenser 10 is constructed of aluminum except for the lid 14, the upper door 66, and the lower door 72, which are constructed of plastic or rubber to enhance the ability of the lid 14 and doors 66,72 to form an air-tight seal with other elements of the dispenser 10.
In use, a user first removes the lid 14 and fills the hopper 12 with contents 18.
To dispense the contents 18 that have passed from the hopper 12 to the dispensing chamber 16, the user opens the lower door 72, as illustrated by the arrow in
Referring now to
The base 98 is substantially rectangular and presents a flat upper surface on which the container rests during the dispensing process. The neck 100 generally extends upwardly from an edge of the base 98 to leave room for the container to be placed at or near a center of the base 98. The cradle 102 supports the hopper 12 and the dispensing chamber 16 at a sufficient height above the base 98 to allow a user to place the container on the base 98. The cradle 102 is substantially concentric with the base 98 so that when the hopper 12 and dispensing chamber 16 rest in the cradle 102, the container placed on the base 98 is below and substantially in line with a bottom of the dispensing chamber 16. By way of example, a coffee ground filter or coffee mug may be placed on the base 98 to collect coffee grounds, instant coffee mix, or other drink mix dispensed via the dispensing chamber 16. Alternatively, a mixing bowl or a pot may be placed on the base 98 to collect spices or other ingredients dispensed via the dispensing chamber 16.
The cradle 104 presents an upper surface that substantially conforms to an outer surface of the sloping peripheral wall 32 of the hopper 12 such that the hopper 12 rests securely on the cradle 104. The cradle 104 further presents a recess corresponding to the first side 46 of the peripheral chamber wall 44 of the dispensing chamber 16 to allow the lower door 72 and the upper door 66 to pass through the aperture 106 while in a closed position. The hopper 12 may rest on the cradle 104 without being attached thereto, or may be secured to the cradle 104. Using the stand 98, a user may remove the hopper 12 and the dispensing chamber 16 from the stand 96 in order to facilitate filling the hopper 12 with contents. When the hopper 12 is thus filled with contents, the user places the hopper 12 and the dispensing chamber 16 back on the cradle 104 for dispensing.
Although the invention has been described with reference to the preferred embodiments illustrated in the attached drawings, it is noted that equivalents may be employed and substitutions made herein without departing from the scope of the invention as recited in the claims. It will be appreciated, for example, that the dispenser of the present teachings is not limited to use with coffee grounds, spices, or any other particular substance but is useful with virtually any type of contents including, for example, household and commercial non-food substances.