Dispensing – Automatic control – Motor control
Patent
1994-08-03
1996-09-03
Kashnikow, Andres
Dispensing
Automatic control
Motor control
222 83, 222207, 222214, B27D 508
Patent
active
055515991
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION AND PRIOR ART
This invention relates to a dispensing device for flowing substances. What here is primarily related to are flowing food substances, such as mustard, ketchup, dressings and so on within the restaurant and kiosk business, cream, butter creams, jams and so on within the bakery business etc.
The handling now used for food products of additive character for the food industry, e.g. bakeries etc., and the restaurant business is affected by several deficiencies. Thus, it is today usual that the containers containing the food product in question are located in room temperature for hours, days not to mention weeks before the content of the containers has been consumed. Furthermore, such considerable lengths of time also often pass between thorough cleaning of the containers and the dispensing devices used. Such extended dwell times of food products in room temperature give rise to a rapid increase of micro organisms harmful to humans. This is especially the case as the food substances in question often are in contact with the surrounding air. According to known art it is namely required, to even get the food substance out of actual containers with the dispensing devices used, that vent openings are present between the interior of the containers and the surrounding since the discharging of substance out of the containers otherwise would be counteracted by the tendency of forming of vacuum therein, which arises at the discharging of substance. It is true that attempts are made to reduce this increase by admixing considerable quantities of pesticides active against the micro organisms in question to the food products involved. However, it is today a nearly unanimous opinion within the staff of medical re- searchers within this field that such pesticides are considerably more harmful to the human organism than expected before. Once the content of pesticides is reduced or such means are totally eliminated, an even more rapid increase of micro organisms is created.
SUMMARY OF THE INVENTION
The object of the present invention is to reduce the deficiencies discussed above and other problems within the art. Thus, a dispensing device shall be provided, where the food substance gets a very good durability without involving for that sake any dependence of chemical pesticides; instead, the invention intends to indicate means for working out the dispensing device so that the contact with the oxygen of the surrounding air and micro organisms, being responsible for the degradation of the food substance, is avoided to a maximum degree. Furthermore, the invention aims at indicating solutions, advantageous from a constructive point of view, for working out the dispensing devices in question.
By using, in accordance with what is defined in claim 1 in combination with the dispensing device here involved, a container of the type that decreases its volume at the same rate as with which the substance is discharged from the container, one can avoid that the substance in the container gets in contact with the surrounding air. This means that foods substances can stay in the container for a very long time without being degraded. In the context it is preferred that the container has the character of a flexible bag.
By working out the dispensing device with a tube of a flexible material adapted to receive substance coming from the container and arranging the valve arrangement, as affectable for regulation of flow by pressure action on the flexible tube in accordance with claim 3, it is achieved that the food substance contained in the tube not either there risks being subjected to degenerating contact with the surrounding air. Further, there is not required any sealed inlets of manoeuvre arms or the like, occurring in earlier valve arrangements known per se.
An especially advantageous solution is obtained in case a conduit extends between the valve arrangement and the container, said conduit being co-ordinated with a pump arrangement arranged to transport the substance in the conduit without getting in
REFERENCES:
patent: 2742191 (1956-04-01), Corsaw
patent: 3645423 (1972-02-01), De Graw
patent: 3847304 (1974-11-01), Cohen
patent: 4515294 (1985-05-01), Udall
patent: 4708266 (1987-11-01), Rudick
patent: 4717047 (1988-01-01), van Overbruggen et al.
Derakshani Philippe
Kashnikow Andres
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