Tent – canopy – umbrella – or cane – Portable shelter – With heating – lighting – or ventilating
Patent
1994-12-30
1998-11-17
Friedman, Carl D.
Tent, canopy, umbrella, or cane
Portable shelter
With heating, lighting, or ventilating
135 92, 135 99, 135100, E04H 1516
Patent
active
058363319
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION AND PRIOR ART
The present invention relates to a ventilating device for tents with at least one roof top and a place for an open fire under this roof top, the tent cloth having an upper boundary at a distance below the apex of this roof top, so that an opening for discharging flue gases coming from a fire is formed at the roof top. That the fire is located under the roof top is to be interpreted in a wide sense, and it may well be arranged substantially displaced in the horizontal direction with respect to the roof top.
Tents provided with this type of ventilating devices could be called fire tents, and an example of such a tent is the hut of the Lapps and the tepees of the Indians, and this field of use will in the following be discussed by way of illustration but not as a limitation.
Ventilating devices of the type described above are necessary in huts so as to make it possible for the flue gases coming from the fire and rising to leave the hut. However, a disadvantage of the devices already known consists in that insects unpleasant for the users of the hut, especially midges, may get into the hut through the flue gas opening when the fire dies. This can not either be avoided by closing a flue gas fly possibly being a part of the ventilating device, since it is necessary that the smoke may pass out through the flue gas opening also when the fire is dying.
Furthermore, in such a ventilating device it is desirable to be able to regulate the flue gas fly in a simple way should there be one.
BRIEF DESCRIPTION OF THE INVENTION
The object of the present invention is to solve the problems mentioned above.
The first of these objects is obtained in accordance with the invention by providing a ventilating device of the type according to the introduction with a net substantially impervious to insects, that the insects net is arranged in said flue gas opening so as to prevent insects from getting into the tent through this opening, that the insects net is movably arranged with respect the framework of the tent and the device further comprises an arrangement for regulating the degree of the coverage of the flue gas opening by the insects net between a first position substantially completely covering it and at least a position, in which the flue gas opening is at least partially exposed for a reduced flow resistance to flue gases.
Thanks to this feature of a ventilating device according to the invention it will be possible to prevent insects from getting into the tent through the flue gas opening of prior tents provided with the device. When a fire is burning with full power in the tent it is not possible that an insects net completely covers the flue gas opening, but the main part thereof must be exposed or set free, since otherwise the flow resistance for the flue gases will be so high that the flue gases are spread inside the tent. However, to put the insects net aside in that manner has no prejudicial influence on the ability of the ventilating device to keep the insects out, since the flue gases manage to prevent the insects from getting in through the flue gas opening in this fire condition. When the strength of the fire after that is reduced the degree of the covering of the flue gas opening by the insects net may thanks to the utilization of the regulating arrangement of the ventilating device according to the invention be increased, and this flue gas creation is that low when the fire is dying that the insects net may be regulated to completely cover the flue gas opening and in spite thereof enable an appropriate discharging of flue gases through the opening. This means that persons present in the fire tent may go to bed when the fire is dying and are spared from discomforts procured by insects getting into the tent through the flue gas opening during their nights sleep.
Thanks to the combination of the features according to the invention; insects net and regulating arrangement for this insects net, the problem being the basis of the invention may accordingly be solved in a satisfyi
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Friedman Carl D.
Yip Winnie S.
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