FR2464879A1 - Breathing appts. for skin diver - has fixed volume with bellows to follow outside pressure and fitted with non return valves and filling valve - Google Patents

Abstract

The breathing appts. consists of a box (1) having a fixed volume (2) attached to bellows (3) with a variable volume. The top of the box has an air pipe (4). The pipe is connected to an extension (5) with a non return valve (6) and a mouthpiece (7). An air inlet valve (10) is connected to the box by the pipe (9), and the box has a drain valve (8). The device is fitted with an isolating valve (17). The air is compressed at depth by the bellows.

Description

The object of the invention relates to a complementary respiratory device with limited capacity for divers.

 It is intended to allow the autonomous diver, without traditional diving equipment, to remain submerged for a time slightly longer than that normally allowed by his natural breathing.

The scuba diver who, for example, goes for a walk or spearfishing can only stay submerged for a time limited by their breathing capacity; it often happens that out of breath he is forced to rise to the surface and thus lose his grip, sometimes even when he has to rescue a submerged person, it is impossible to stay a few more seconds under the water.

The device according to the invention allows the diver who has remained underwater the physiologically allowed time to extend, if necessary, a few seconds under water, giving him a second breath, while maintaining the air at the prose cdoensltetuuë by a tight capacity of small volume corresponding to the normal pulmonary capacity of the user comprising the combination of a rigid sector forming frame and frame, with a flexible and waterproof sector.

In the accompanying drawings given by way of nonlimiting example of one of the embodiments of the subject of the invention
Figure 1 shows the respiratory capacity seen in section and elevation.

 FIG. 2 represents an alternative embodiment of the same object.

 Figure 3 is an overview of the apparatus in operation.

The capacity 1 fig 1, is constituted by a rigid box 2 for forming and holding, extended by a flexible and elastic sector 3.

 Its upper wall comprises an air duct 4 connected to an assembly 5 with non-return discharge valve 6 and mouthpiece 7 or adaptation to a diving mask.

 A drain valve 8 completes this assembly.

 The air intake is formed by the conduit 9 with valve 10. The air through the flexible wall follows the water pressure.

According to the variant of fig 2, the capacity 11 with flexible sector 12 is opposite to a capacity 13 with flexible sector 14.

 The capacity 13 is empty with valve 15 and conduit 16, connected to the mouthpiece.

It is intended to recover the stale air expelled by the
diver to form ballast compensator buoy, facilitating the ascent.

 The air contained in the capacity 11 being sucked in and the air contained in the capacity 13 being discharged.

 Capacity 1 or It is of a capacity equivalent to the lung volume of the diver.

The air contained compensates for that expelled by the diver and gives it a second wind, extending the normal immersion time, especially in the event of danger.

 A tap 17 can neutralize the use of capacity. This box is fixed on the chest 18 of the user, fig 3. I1 is fixed by fasteners and does not hinder the movements of the user.

 It is used both on diving clothing and on the bare chest of the user and can be used both for sport and swimming, and for amateur diving who wishes to extend their immersion time by a second breath.

 It is possible to reinforce the natural elasticity of the wall by a very light push spring facilitating both the admission of air and its expulsion depending on whether it is a distribution or recovery tank.

 However, the shapes, dimensions and arrangements of the various elements may vary within the limit of equivalents, as indeed the materials used for their manufacture, without thereby changing the general conception of the invention which has just been described. This is how this device can be incorporated into a double wall diving suit.

Claims (3)

CLAIMS 1 "Additional respiratory device with limited capacity for divers allowing the user to extend their immersion for a second breath and usable for walking as well as for rescue, characterized by the combination of a waterproof case to rigid sector with a flexible sector extending it, maintaining the air at the pressure of the water. Device according to claim 1, characterized in that the rigid sector forming the forming and fixing frame is connected to a suction duct with mouthpiece and evacuation valve, so that at a filling line with non-return valve an evacuation valve is placed at the bottom. 30 Device according to claim 1 characterized in that the rigid sector is provided with a fastening assembly on the chest of the user. 40 Device according to claim 1 characterized in that the flexible and elastic capacity facilitates by its retraction, the ejection of the air contained whose volume preferably corresponds to that of the lung capacity of the user. 50 Device according to claim 1 characterized in that a second tank having the same construction features as the first is attached to the wall of the main capacity. And is connected to a stale air expiration duct in order to produce a ballast compensator as well as a balancing float. 6 "Device according to claim 1 characterized in that the elasticity of the wall can be enhanced by a compensating spring acting in an oriented direction.