Dispensing – With discharge assistant – Movable or conveyer-type trap chamber
Patent
1992-06-18
1993-10-26
Huson, Gregory L.
Dispensing
With discharge assistant
Movable or conveyer-type trap chamber
222153, 222363, G01F 1110
Patent
active
052558290
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a dispenser for discharging fluent, finely-divided or liquid material from a tight or substantially tight package Portioning dispensers connected to packages are previously known in a number of different designs. One example of such a prior art dispenser is disclosed in Swedish Registered Design No. 34 484.
In many types of material, both pulverous and liquid, it is vital that no foreign matter penetrates the package to contaminate the material. For this reason, use is made of, for instance, glass jars with diffusion-tight connected lids for the storage of ground coffee in order that the oxygen of the air does not oxidize and thereby mar the flavor of the coffee before the package proper is broken. Hence, packages may be rendered quite diffusion tight, for example by making them of glass, aluminum foil or some other diffusion-tight material.
The weak link in dosage-dispensing packages is the dispenser itself, since this may, by diffusion, let in ambient gases and/or liquids, either directly through the material from which the dispenser is manufactured, or through those apertures, slots, gaps, etc. which are present in the dispenser.
A package containing material of the type contemplated here is normally kept and stored for a relatively lengthy period of time before the package is opened, the material contained therein subsequently being consumed during a relatively short time.
Consequently, considerable progress would be made--in relation to the prior art--if a package with a dispenser and with material in the package were, during storage and transport to the consumer, to be diffusion-tight and, in particular, to be gas diffusion-tight.
Dispensers of the above-described type require some form of device which is accessible exteriorly for operating, for example, a knob to advance compartments with a measured amount of material one at a time to discharge the material from the package. Unintentional operation of the knob by, for example, handling filling, or manual picking however, may run the risk of jeopardizing the diffusion tightness of the package.
SUMMARY OF THE INVENTION
The dispenser of the present invention includes an apparatus which is rotatably disposed in an aperture of the package by means of a knob and which is provided with dosage compartments. On rotation of the apparatus by means of the knob, the compartments are filled by the fluent material and emptied of such material by gravitational force.
According to the present invention, with the aforementioned knob in an inoperative position, the knob not being manipulated to the operative position until it is first to be put into use, unintentional activation of the knob will be prevented, thereby eliminating the risk of accidental contamination of the material within the package.
Such manipulation of the knob may be effected in a plurality of different manners, a number of which are described in greater detail hereinbelow, and others of which will be made obvious by the present disclosure. The nature of the present invention and its aspects will be more readily understood from the following brief description of the accompanying Drawings, and discussion relating thereto.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a partial cross-section through a dispenser connected to a package in a first embodiment of the invention, with the knob of the dispenser in the inoperative position;
FIG. 2 illustrates the dispenser of FIG. 1 connected to a package in the first embodiment with the knob of the dispenser in the operative position;
FIG. 3 shows the dispenser of FIG. 2 seen in the direction of the arrows III--III;
FIG. 4 shows a second embodiment of the invention in partial cross-section, with the dispenser knob in the inoperative position;
FIG. 5 shows the embodiment according to FIG. 4 but with the cover removed and with the knob in the operative position; and
FIG. 6 shows a detail of the embodiment according to FIGS. 4 and 5.
It should be observed that identical reference numerals have
REFERENCES:
patent: 2411220 (1946-11-01), McDargh, Jr.
patent: 3241728 (1966-03-01), Murphy
patent: 3484025 (1969-12-01), Capalia
patent: 4058240 (1977-11-01), Becker
patent: 4613064 (1986-09-01), Meyer et al.
patent: 5169036 (1992-12-01), Tong
Trumstedt Per N.C.
Trumstedt Per T.
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