Dispensing – Automatic control – Of dispensers with fluid pressure discharge assistance
Patent
1983-01-24
1986-01-14
Tollberg, Stanley H.
Dispensing
Automatic control
Of dispensers with fluid pressure discharge assistance
222397, B67D 554
Patent
active
045641269
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an arrangement for supplying gas to a liquid in a container having a gas conduit discharging thereinto, particularly for preparing aerated beverages. The container is provided with an orifice through which liquid is introduced into the container; an orifice through which liquid can be emptied from the container; and gas-venting means.
BACKGROUND ART
For the purpose of preparing aerated beverages on a small scale, for example in the home, apparatus are known by means of which carbon dioxide can be supplied to water in a bottle, the water then being flavoured with a flavouring substance. In the preparation of such beverages, it is necessary to first fill a bottle with water up to a given level, and then to hold the bottle firmly gripped in the apparatus while supplying carbon dioxide to the water. The bottle is then removed from the apparatus and the flavouring substances added. The beverage is then ready to be poured into a drinking glass or the like.
In addition to being relatively complicated, since among other things it requires the use of a separate bottle whose form and size are adapted to the apparatus in question, the aforedescribed procedure for preparing aerated beverages is also encumbered with other problems and safety risks. Among other things, it is difficult to obtain an accurate seal when using standard bottles, since these bottles can vary greatly in height. In addition, risks are involved when subjecting return bottles to pressure, since in addition to uneven manufacturing quality the bottles may have been damaged during previous use or transportation. Further, in the case of known apparatus the bottle can be pressurized without having been filled with liquid, which presents a risk of serious injury should the bottle explode. It is also possible with known apparatus to overfill the bottle with liquid, rendering it impossible to supply sufficient carbon dioxide to the liquid. In order to aerate a liquid effectively in a container, it is necessary to provide above the surface of the liquid a space in which the gas can be compressed.
It has also been proposed to introduce carbon dioxide into a liquid enclosed in a container fixed in an apparatus, and to pour the aerated liquid directly from the container into a glass. The use of this container is also relatively complicated, however, and in some respects the arrangement is unsafe. Thus, it is also possible with this arrangement to pressurize the container when it is empty. Also, it has been possible to pour liquid from the container while the container still is under high pressure.
OBJECTS OF THE INVENTION
The main object of the present invention is to provide an apparatus of the kind mentioned in the introduction in which the aforementioned disadvantages are eliminated. Thus, in the apparatus according to the invention it shall not be possible to pressurize the container without said container being filled with liquid to a given level.
According to another object it shall not be possible to overfill the container, but that space in which gas can be compressed shall always be present above the surface of the liquid.
BRIEF SUMMARY OF THE INVENTION
The first mentioned object is achieved in accordance with the invention by providing the apparatus with means preventing a gas pressure to be built up in the container unless it is filled with liquid to a given level.
This can be obtained by providing means preventing gas to be supplied to the container unless it is filled with liquid to said level. According to another embodiment of the invention the apparatus is provided with means permitting gas supplied to the container to escape therefrom unless the container is filled with liquid to the given level. Preferably, the container is provided with an orifice through which gas can escape from the container which orifice is closed by a means controlled by the level of liquid in the container.
According to a preferred embodiment the filling orifice of the container is located in the upper part of
REFERENCES:
patent: 3128912 (1964-04-01), Cash
patent: 4407340 (1983-10-01), Jensen et al.
Kommanditbolaget Aldolf
Tollberg Stanley H.
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