Boots – shoes – and leggings – Boots and shoes – Heated
Patent
1998-05-21
1999-09-21
Dayoan, B.
Boots, shoes, and leggings
Boots and shoes
Heated
36 3A, A43B 702, A43B 706
Patent
active
059538341
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATION
This application is the 35 USC .sctn.371 national stage of international application PCT/FR96/01270 filed on Aug. 9, 1996, which designated the United States of America.
FIELD OF THE INVENTION
The present invention relates to an article of clothing or footwear having a heat-conditioning element incorporated therein.
BACKGROUND OF THE INVENTION
It has been known for a long time to equip footwear or articles of clothing with heating means of different types, namely electrical, with liquid or gaseous fuel, etc. The heating systems incorporated in such articles obviously present several drawbacks, such as the substantial increase in the cost price of the article, its weight and bulk.
Furthermore, articles of footwear and clothing are also known which are provided with ventilation means to evacuate the heat emitted by the human body. However, the transfer of heat towards the outside cannot always be effected under satisfactory conditions due to the presence of thermally insulating layers of the article and this results in a sensation of discomfort for the wearer of these articles.
The document EP-A-0 059 581 discloses a clothing article of the vest type containing heat paths, which is connected by an independent external heat path and a connector with a heat sink.
The document WO-A-9 213 600 also discloses a vest containing an inflatable heat path, the internal wall of the vest being in contact with the body of the wearer and forming a source region whilst its external wall forms a sink region to discharge heat from the body to the atmosphere.
SUMMARY OF THE INVENTION
The present invention aims at overcoming these drawbacks, allowing a sensitive part of the body to be heated or cooled without employing an outside source of energy, by very simple means which may be incorporated very easily in the articles.
To that end, this article of clothing or footwear having a heat-conditioning element incorporated therein, is characterized in that it comprises a heat pipe of which at least a first part or source zone is in heat exchange contact with a relatively hot zone of the body of the wearer of the article and at least another part or well zone is in heat exchange contact with another zone of the wearer's body or with the outside, so as to transmit the heat produced by the hot zone of the body, from the source zone towards the well zone of the heat pipe, with a view to evacuating the heat towards the outside of the article, or to warming, by this heat, that part of the body located in the immediate proximity of the well zone of the heat pipe.
As is well known, the heat pipe is a heat transfer element comprising, in a thin volume defined by a tight enclosure, a fluid with change of liquid/vapour phase, such as water under its vapour tension. The heat pipe which constitutes an element for heat conditioning the article of clothing or footwear may be integrated in this article or added thereon. The invention may be applied to various types of articles such as shoes, gloves, headbands or bonnets covering the ears, overalls, etc.
BRIEF DESCRIPTION OF THE DRAWINGS
Various forms of embodiment of the present invention will be described hereinafter by way of non-limiting examples, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view in section illustrating the effect of heat conditioning of a heat pipe incorporated in an article of clothing or footwear.
FIG. 2 is a view in section of a variant embodiment of the heat conditioning element.
FIG. 3 is a view in vertical and partial longitudinal section of a safety shoe comprising, in its sole, a heat pipe for evacuating the heat from the foot towards the outside.
FIG. 4 is a view in vertical and longitudinal section of a variant embodiment of the shoe shown in FIG. 3.
FIG. 5 is a schematic view in vertical and longitudinal section of a variant embodiment of the shoe adapted to warm the wearer's toes.
FIG. 6 is a schematic plan view, with parts torn away, of a glove equipped with a heat pipe for warming
REFERENCES:
patent: 2153304 (1939-04-01), Gruber
patent: 2397413 (1946-03-01), Evans
patent: 2442026 (1948-05-01), Thompson, Jr.
patent: 3044188 (1962-07-01), Evangelista
patent: 3128566 (1964-04-01), Burlison et al.
patent: 4397104 (1983-08-01), Doak
patent: 4835883 (1989-06-01), Tetrault et al.
patent: 5515622 (1996-05-01), Lee
A.R.M.I.N.E.S.- Association Pour La Recherche et Le Developpemen
Dayoan B.
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