DE8313743U1 - Thermos flask - Google Patents

Description

VACUUM FLASK

The invention relates to an insulated jug with a heat-insulating inner container, a jacket surrounding it with a head part made of plastic or the like and a closure plug screwed into the head part for tightly closing the inner container, with two inwardly projecting, diametrically opposed threaded sections in the head part, each extending at about 90°, for receiving the closure plug with external thread, with a pouring spout molded onto the head part and protruding outwards, and with, if appropriate, a handle molded onto the head part and diametrically opposed to the pouring spout.

Insulated jugs of this type are commercially available. Because the neck of the head part does not have continuous threads, but rather diametrically opposed thread sections that each extend over about 90°, the casing or its head part can be manufactured inexpensively using the so-called "collapsible core" process. The pouring spout is designed as a channel that is open at the top.

In order to improve the pouring behavior, it is desirable to design the spout as a continuous spout. However, such a design of the spout as a spout is opposed by technical manufacturing difficulties during production, particularly during demolding when producing the head part from plastic. If demolding is carried out using an insert, only automatic spraying is possible, which is expensive and therefore uneconomical. If the closed spout

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j demoulded in the pouring direction, only certain designs of the spout are possible, which have unfavourable flow properties and thus poor pouring behaviour. Such insulated jugs would have no advantages regarding the pouring behaviour compared to those with a conventional gutter-like pourer.

It is therefore the object of the invention to design an insulated jug of the type mentioned at the beginning in such a way that, despite its design with a continuous spout, cost-effective demolding by means of a collapsible core is possible.

The task is solved by the fact that the spout is designed as a continuous spout and a the threaded sections are arranged in the area of the opening forming the spout in the ring-shaped head part.

This is compared to conventional vacuum jugs by

approximately 90° offset arrangement of the thread sections it will be possible to use the spout-side threaded slide the shape also for forming the spout-side opening in the now continuous ring-shaped head section to use, i.e. through the spout-side thread slider is at least a partial demoulding of the spout possible. The remaining open area of the snout can be covered by an additional plate.

During the formation of the snout, the opening

limiting ring section of the head part outwards

be extended by a molded element, 30

so that a spout without additional plate is possible.

The invention therefore enables insulated jugs to have spouts similar to those of conventional porcelain jugs. This makes it possible to create insulated jugs that are visually indistinguishable from conventional porcelain jugs in the pouring area and can therefore be used with conventional porcelain tableware. The spout ensures that the contents of the jug, e.g. coffee or tea, cannot overflow over the spout even with a flat pouring angle, since the ring section of the head part that limits the opening at the top and also carries the threaded section acts as a barrier. This enables very good pouring behavior. Since demolding to the outside is no longer necessary, the pourer can be designed with good pouring behavior in mind.

The invention is explained in more ^detail with reference to the embodiment shown in the drawing.

Fig. 1 in sectional view through the spout corresponding to section II in Fig. 3 the head part of the jacket of an insulated jug with _continuous spout,

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Fig. 2 the section II-II in Fig. 3 ,

Fig. 3 shows a top view of an insulated jug according to the invention.

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In the figures, only the upper part of an insulated jug 1 is shown, whereby the heat-insulating inner container 2, like a Dewar flask, is only indicated schematically by dashed lines. A jacket 4 surrounds the inner container 2 essentially completely and allows a

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^; Opening free, into which a sealing plug 3 can be inserted to seal

Closing the inner container 2 can be screwed in.

\i Seals made of elastic sealing material are

possibly between the inner container 2 and the head part 5 as well as on the closure plug 3 in such a way that leakage of liquid in the inner container to the outside is reliably prevented. Such seals are common and are not shown here.

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On one side of the headboard there is a

a handle 6 is formed. Diametrically opposite, a pouring spout 7 is formed on the head part 5.

The pourer 7 is designed as a continuous spout, i.e. it passes through the head part 5, which is designed as a complete ring, via a through-opening 8. The counter thread in the head part 5 for the external thread of the closure plug 3 has diametrically opposed thread sections that project inwards at approximately 90° each. One of the threads.-

: sections, namely the threaded section 9 is approximately

evenly on both sides of the opening 8 above this in the head part 5. The diametrically opposite thread section 25, which here consists of an upper and a lower thread 10 and 11, respectively _, is designed to project inwards in the area of the handle 6 in the head part 5.

30 In the area of the opening 8, an outwardly projecting element 12 is formed on the outside of the ring section of the head part 5, which extends the boundary of the opening outwards and thus covers the pourer 7 further in the direction of the pouring opening 14.

■j 35 Furthermore, the remaining open area of the spout can be additionally covered by a plate 13 made of plastic or

This plate 13 can be glued on, it can also be snapped in. By designing this plate 13 from a different colored plastic, additional optical effects can be achieved.

By arranging the threaded section 9 in the area of the opening 8, the jacket or at least its head part 5 can be manufactured using a technique

which is known as a collapsible core. The spout-side threaded slide provided for the spout-side threaded section ^ enables, with a suitable design, partial demolding of the spout 7 at least in the area of the opening 8 and possibly also of the element 12. The section of the spout 7 lying outside the opening 8 or the element 12 can be demolded in a conventional manner. It should be mentioned that the handle-side threaded section is also demolded using a similar handle-side threaded slide.

In this way, an insulated jug with a jacket with a closed spout can be manufactured in a cost-effective manner ( 25 ).

By designing the pourer 7 as a closed spout in the manner according to the invention, it is possible to create insulated jugs whose continuous spout is largely similar to that of a conventional porcelain jug, whereby the pouring behavior of the insulated jug can be designed without special consideration of the demoldability with special consideration of the pouring behavior. Furthermore, the closed annular head part 5 carrying the threaded section 9 forms a

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Lock, which means that even with a flat pouring angle, i.e. very full insulation tube, the liquid cannot overflow over the pourer 7.

Of course, other embodiments are possible, for example the head part can be a separate part of the casing. Furthermore, the cross-sectional area of the opening 8 is not necessarily essentially rectangular but can have any cross-section, for example oval or circular. Furthermore, the handle 6 does not necessarily have to be provided and does not necessarily have to be molded on.

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Patent Attorney 20

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Claims (1)

EXPECTATIONS 1. Insulated jug with a heat-insulating inner container, a jacket surrounding the inner container with a head made of plastic or similar and a sealing plug that can be screwed into the head to tightly seal the inner container, with two diametrically opposed threaded sections in the head section, each projecting inwards at an angle of approximately 90°, to accommodate the sealing plug with external thread, with a moulded spout protruding outwards from the head part and with, if necessary, a handle formed on the head part and diametrically opposite the spout, characterised in that that the pourer (7) is designed as a continuous spout and one of the threaded sections (9) is arranged in the area of the opening (8) forming the spout in the annular head part (5). Postal address: PO Box 260132 D-8000 Munich 26 Office address: ,S.teinsdorfstraßelO Accounts for official fees: Postgiro Munich, account 195 75-803 (bank code 70010080) EPA account 28000206 , 2. Insulated jug according to claim 1, characterized in that the threaded section (9) extending in the area of the opening (8) is approximately evenly distributed on both sides the opening (8). 3. Insulated jug according to claim 1 or 2, characterized in that the threaded section extending in the area of the opening (8) is arranged above the opening (8). 4. Insulated jug according to one of claims 1 to 3, characterized in that on the outside of the threaded section (9) in the area of the ring section of the head part (5) carrying the opening (8), the spout (7) is additionally covered by a plate (13). 5. Insulated jug according to one of claims 1 to 4, characterized in that that on the outside of the ring section of the head part (5) carrying the threaded section (9) in the area of the opening (8), the pouring spout (7) is secured by a protruding from the outside to the ring section of the head ceiling 25 (5) molded element (12) over the ring section is covered beyond this.