Insulating and heating safety device suitable for waterproofs and work clothes
A technology of safety device and waterproof clothing, which is applied in the directions of underwater operation equipment, clothing, application, etc., can solve the problem of lack of heat distribution device and other problems
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[0028] With reference to these figures, the invention is illustrated by the following examples, which are not intended to limit the scope of the invention.
[0029] In a preferred embodiment, the device is formed by a main annular bag (1 ) made of PVC and having on its outermost side a secondary bag (5) of narrow and elongated shape.
[0030] The main bag (1) has on its face a check valve (4) formed by a simple flange with flaps that open under the action of external water pressure but prevent any fluid from leaving the bag. The flange will be made such that a small pressure is required to allow the water to pass (this will translate into the fact that water will not penetrate until a depth of several centimeters is reached).
[0031] The connection of the main bag (1) and the auxiliary bag (5) is also blocked by a cover made of a thin PVC layer (6) which will rupture as the pressure inside the device increases. The auxiliary bag (5) has a small amount of water in it to facil...
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