Gas and liquid contact apparatus – Contact devices – Liquid tank
Patent
1984-03-09
1986-05-13
Rolla, Joseph J.
Gas and liquid contact apparatus
Contact devices
Liquid tank
261DIG7, 993231, B67D 104
Patent
active
045885362
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to apparatus for supplying gas to a liquid in a container having a gas conduit discharging thereinto, particularly for preparing aerated beverages. Arranged in the upper part of the container is an orifice through which liquid is introduced into the container.
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 first to 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 substance added. The beverage is then ready to be poured into a drinking glass or like vessel.
In addition to being relatively complicated, since among other things it requires the use of a separate bottle whose shape and size are adapated 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 a good 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 in 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 aearate 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. For example, it is possible with such known apparatus to pressurize an empty container. Furthermore, it is possible to begin to pour liquid from the container while the container is still under high pressure.
Apparatus of the kind mentioned in the introduction and by means of which the aforementioned disadvantages are eliminated is described in Applicant's U.S. Pat. No. 4,509,569.
OBJECT OF THE INVENTION
The prime object of the present invention is to provide a further development of the apparatus described in the aforesaid Patent, in which the filling orifice of the container is automatically closed in a ready and reliable fashion, when so desired.
BRIEF SUMMARY OF THE INVENTION
In this respect, an apparatus according to the invention is characterized in that the filling orifice of the container is provided with a closure means which is arranged to close the orifice automatically in conjunction with supplying gas to the container. Among other things, such an embodiment obviates the need for additional manual handling of the container when supplying carbon dioxide thereto, such additional manual handling readily being forgotten. Furthermore, with such an embodiment the filling orifice is normally open, which facilitates both filling of the container and the pouring of liquid therefrom.
In a preferred embodiment, movement of the closure means to its closing position is initiated by the gas stream. In this respect, the closure means is suitably in connection with a means which is located in front of the discharge orifice of the gas conduit and which is arranged to be acted upon by the exiting gas stream. The closure means is preferably pivotally suspended and arranged to be caused, sub
REFERENCES:
patent: 2647734 (1953-08-01), Nicholas
patent: 3248098 (1966-04-01), Cornelius
patent: 3552726 (1971-01-01), Kraft
patent: 3618905 (1971-11-01), Primus
patent: 3851797 (1974-12-01), Jacobs
patent: 4298551 (1981-11-01), Adolfsson et al.
patent: 4509569 (1985-04-01), Adolfsson
Heim Louise S.
Kommanditbolaget Aldolf
Rolla Joseph J.
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