Receptacles – Receptacle having means to facilitate maintaining contents... – For a beverage
Patent
1998-08-03
1999-08-03
Castellano, Stephen
Receptacles
Receptacle having means to facilitate maintaining contents...
For a beverage
22059227, 220918, 2205601, B65D 2518
Patent
active
059313340
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a thermal container with double wall made of metallic material, particularly but not exclusively for beverages and food liquids, such as bottles, kettles, thermal vessels, canteens, hot beverage vending machines, and the like. The invention furthermore relates to a method for manufacturing thermal containers of the above type.
It is known that double-walled thermal containers that have an inner mirror-finished surface, are known in physics as "Dewar flasks", and are commonly known as "thermos bottles", are used to keep beverages and food liquids in general at a temperature other than the ambient one.
More specifically, conventional commercial thermos bottles are constituted by an inner vessel made of glass and by an outer vessel made of metal or plastic, which are separated by an interspace that is empty or filled with an insulating material and sealed hermetically.
Although these conventional containers are characterized by good efficiency and thermal stability, they are intrinsically rather fragile and therefore unsuitable for heavy-duty uses, such as for example in a sports context and for outdoors use.
Therefore, when greater resistance to stresses and vibrations is required, thermal containers with a double metallic wall, made for -example of aluminum and/or stainless steel, are used.
A conventional type of thermal container with a double metallic wall, described in European Patent application No. 95810315.2 and shown schematically in FIG. 1, essentially includes a first inner vessel made of stainless steel or aluminum that is enclosed in a second outer vessel made of aluminum.
The two vessels are rigidly and hermetically connected, proximate to their respective necks, by a connecting part that is also metallic, so as to form a sealed interspace between them, in which a vacuum is produced.
A drawback of this conventional container is that the metallic connecting part acts as a thermal bridge between the two containers, allowing a certain exchange of heat that considerably reduces the efficiency of the bottle.
Another drawback of conventional thermal containers is the constructive and assembly complexity which can require the mutual welding of different metals, which is notoriously difficult.
Another drawback of conventional thermal containers with double metal walls is their complicated manufacturing method.
The aim of the present invention is to provide a thermal container with double metal wall that maintains the utilization temperature of the contained substances for a longer time than conventional similar bottles.
Another object of the invention is to provide a thermal container that is strong but also light and is also universal, that is to say, can be coupled to any support for sports and/or amateur use.
Another object of the invention is to provide a simple and relatively cheap method for producing thermal containers having the properties outlined in the above aim and object.
This aim and these objects are achieved by a container and by a method for manufacturing said container, as claimed in the appended claims.
The absence of thermal bridges between the two metallic vessels ensures that the utilization temperature of the content of the container is maintained for a longer time than in similar conventional thermal bottles.
Another aspect of the invention relates to a method for producing a thermal container of the above described type, characterized in that it includes the following steps: opening that can be closed by a detachable closure means; one and also has a second upper opening; H.sub.2 O and is stably anchored to the base; thereof, proximate to the respective openings, by virtue of a rigid and hermetic connecting assembly that is formed entirely of nonmetallic and non-heat-conducting material; means.
By virtue of this relatively simple and quick production method, the production costs of the bottle are reduced considerably.
Further characteristics and advantages of the bottle according to the invention and of the corresponding manufacturing method will
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Castellano Stephen
Coleman Henry D.
Elite Srl
Sudol R. Neil
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