DE3227306A1 - Mini rescue device for swimmers and water sportsmen - Google Patents

Abstract

A chemical reaction in a small, lightweight reaction chamber produces a non-combustible, non-toxic gas which inflates a life belt initially folded up tightly (to be worn around the neck) to give a correspondingly shaped life belt which keeps both children and adults safely above water when unconscious; the reaction is triggered manually. The device can be re-used by replacing the reaction chamber.

Description

Klaus Kortstock

Kellerstrasse 1 1000 Berlin 41 Dieter Neubauer Kellerstrasse 1 1000 Berlin 41 Patent description Mini rescue device for swimmers and water sports enthusiasts This invention relates to a rescue device used by swimmers and water sports enthusiasts worn constantly without impairing freedom of movement and in an emergency both can be used by the carrier as well as by second persons present can.

The inflatable life jackets in use up to now are conditional due to material and inflation device (compressed CO2), quite heavy rescue equipment, which are attached to the body with the help of straps. This type of attachment is awkward and restricts freedom of movement; the life jackets are hardly usable for small children. Due to water resistance and buoyancy of the They cannot be used by swimmers in life jackets.

The only known inflatable buoyancy device having the aforesaid No disadvantages or only to a minor extent is indicated by the patent application No. 2445357.

In our opinion, however, this is also due to the inflation device with the help of compressed CO2, no optimal weight reduction can be achieved, (The same applies to a patent application that has since been withdrawn (No. 2017658), which, in our opinion, cannot be implemented in this way). The location of the floats at Patent No. 2445357 (on the lower fuselage) also does not seem optimal to us.

The invention is based on the problem of those in distress at sea To keep people's heads safely above water.

This should also apply in the event of a later swooning to have. For this purpose a first amalgamated Lifebuoy, which is worn around the neck, after manual activation in seconds filled with a non-flammable gas.

Our rescue equipment described below is characterized by this from the fact that the listed disadvantages of the previously patented rescue equipment (high Weight and unwieldiness).

The users of this rescue device are primarily children, swimmers, Hobby divers, surfers and "dinghy captains", of which the common rescue equipment for various reasons (including cost and psychological reasons) not to be used.

Our rescue equipment is less for professional purposes (sea rescue in the hurricane), rather than designed for the case of everyday accidents.

The task of designing a suitable rescue device becomes according to the invention achieved in that an appropriately sized lifebuoy with the help of a chemical reaction that takes place in a reaction chamber filled with a non-toxic, non-flammable gas.

The invention is illustrated below with reference to the drawings Illustrated embodiment.

They show: the lifebuoy shown in FIG. 1 shaped as a ruff; a top view of the lifebuoy in an inflated state with the reaction chamber.

In Fig. 2 a section along the line II-II of Fig.1 In Fig. 3 a A sectional plan view of the reaction chamber according to the invention according to FIG Line III-III of Fig. 4 (with the lifebuoy folded).

In Fig. 4 the side view of the reaction chamber in section according to the Line IV-TV of FIG. 3 Lifebuoy: in its front part is the hose diameter is larger, so that the mouth and nose can also be used in the event of fainting of the person to be rescued must be kept afloat (Fig. 2).

The inner diameter of the lifebuoy (1) must be dimensioned so that so that the rescue device keeps the head safely above water without the ring constricting, is still so far that it slips over the head.

To achieve this goal several (at least 2, for children and adults) ring sizes required. Depending on the flexibility of the ring material a reinforcement band made of non-stretchable material may have to be incorporated.

Before use, the lifebuoy (1) is folded tightly in a perforated protective cover. The diameter of the folded lifebuoy should not exceed approx. 1 cm so that the required freedom of movement is guaranteed is. The material of the ring must be chosen accordingly.

Furthermore, it should meet the following requirements: It should be weatherproof, largely UV-resistant, seawater-proof, very tear-resistant, flexible and skin-friendly be.

The lifebuoy (1) is designed so that it can be reused can; it must be placed in a new protective cover before it can be used again.

The lifebuoy (1) is at both of its end points with the reaction chamber (2) connected (see Figures 3 and 4); on one side with a corresponding constructed quick-release fastener (7), on the other side with the valve (6), the itself is part of the ring.

The gas used to fill the lifebuoy (1) is supplied by a chemical Reaction won. Since the reaction chamber (2) is only intended for single use is (see below) and the target group partly consists of children, the products should Reaction to be non-toxic and harmless.

Of the gases in question (e.g. 02, N2, CO2), CO2 was used as an example selected. A carbonate or hydrogen carbonate reacts with a correspondingly diluted one Acid to water, an acid residue and CO2.

For a prototype of the rescue device, a lifebuoy t1) of the form described above was filled with 2.2 l content by the following reaction: 8.6 g NaHCO3 + 3.65 g HCl + 20 g H20 5.85 g NaCl + 21.8 g H20 + 2.2 1 CO2 During this reaction a temperature decrease occurs. With the specified proportions, the temperature of the reaction mixture decreased by approx. 11 ° C. at room temperature.

This temperature decrease appears to us so small that one over the insulating effect of the reaction chamber (2) made of plastic goes beyond Protective insulation against the skin is not required.

In Fig. 3 and Fig. 4, the reaction chamber (2) is shown.

In the reaction chamber, the acid is enclosed in an ampoule (3), which is embedded in the carbonate (4). This ensures that the Acid. reacts quantitatively with the carbonate. The resulting gas is through a suitable desiccant (5) (e.g. silica gel) before passing it through a valve (6) got into the lifebuoy. The desiccant (5) ensures that the resulting gas enters the lifebuoy free of water and acid. Likewise this ensures that if the reaction is incomplete, excess Acid is bound. This purpose can possibly also be achieved through a different technical solution (e.g. membrane) can be achieved.

In the example shown, the reaction is triggered by pressing (finger pressure) triggered, whereby the acid ampoule (3) breaks.

Other trigger mechanisms are also possible (e.g. by pulling or pushing devices).

The outer shape of the reaction chamber (2) can be designed differently be. In the example shown, the shape is flattened and round in cross-section chosen with rounded edges. This shape is characterized by -after the sphere a particularly favorable ratio of size and content (the ball has the Disadvantage of less comfort).

The rounded edges should keep the risk of injury to a minimum be limited.

Other shapes are also conceivable. So can order especially in children overcoming the psychological barrier of carrying a rescue parachute that Reaction chamber (2) in the form of a piece of jewelry, a star, a comic figure or be designed similarly.

The color scheme can also be varied. It can be both signal colors be chosen or simply to overcome psychological barriers (see above) or be decorative colors.

Images can also be printed on the reaction chamber (2).

The material of the chamber has to meet the following requirements: Es must be weather-resistant, UV-resistant, seawater-proof, non-splintering, pressure-resistant, acid-proof, be slightly flexible.

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Claims (13)

Claims 1. Mini rescue device, put together as a chain without Impairment to wear around the neck, inflated so dimensioned that the head the person to be rescued is kept safely above water even in the event of a faint, which is guaranteed by the reaction in a reaction chamber, Amount of gas passed through a valve into the lifebuoy, which generates the buoyancy, characterized by the lifebuoy (1), shaped as a ruff, on both sides with the reaction chamber (2), on one side by means of a valve with a screw cap (6) is connected. The reaction chamber (2) consists of separately stored reaction partners, one of which is enclosed in a glass ampoule (3) and the other reactant (4) is completely surrounded, the gaseous reaction product of which by a desiccant (5) is directed into the lifebuoy (1) while the liquid or in the liquid dissolved reaction product is retained in the desiccant (5). 2. Mini rescue device according to claim 1, characterized in that the When inflated, the lifebuoy (1) has the shape of a neck ruff open at the front with a small hose cross-section at the back and a larger hose cross-section at the front, and one accordingly has a length corresponding to the wearer's neck circumference. 3. Mini rescue device according to claim 1, characterized in that the Lifebuoy (1) can be folded and used as a flexible neck ring of not more than 1 cm in diameter can be worn. 4. Mini rescue device according to claim 1 and 3, characterized in that that the collapsed lifebuoy (1) perforated by a replaceable Sheath is surrounded, which breaks off automatically when the ring is filled. 5. mini rescue device according to claim 1, characterized in that the Material weatherproof, largely UV-resistant, seawater-proof, very tear-resistant, is flexible and skin-friendly. 6. Mini rescue device according to claim 1-3, characterized in that the lifebuoy (1) at one end a valve with screw cap (6) at the other End has a quick release fastener (7) connected to the reaction chamber (2) can be. 7. mini rescue device according to claim 1, characterized in that the Reaction chamber (2) has a flattened, round cross-section, with rounded Owns edges. 8. mini rescue device according to claim 1, characterized in that both Reaction products are stored separately until the reaction by one of the reactants, enclosed in an ampoule (3), from the other reaction partner (4) completely is surrounded. The reaction products are passed through a separating sieve that is pulled out into a tube between the reactants and the desiccant (5) passed into this, so that the liquid reaction products are retained and the gaseous reaction product can get into the lifebuoy (1) through the valve (6) when dry. 9 mini rescue devices according to claims 1 and 8, characterized in that that a reaction chamber of at least 2 reactants is a non-toxic, not supplies flammable gas and other non-toxic reaction products. Reaction example that meets these conditions: 10. Mini rescue device according to claim 7, 8 and 9, characterized in that other reactants result in a different internal structure of the reaction chamber (2). 11. Mini rescue device according to claim 1, 6 and 7, characterized in that that the reaction chamber (2) in the form of a piece of jewelry, a star, a comic figure or the like can be designed and both color and surface structure can be changed. 12. Mini rescue device according to claim 1, 3 and 4, characterized in that that after using the mini rescue device a device to be constructed can be reused of the ring guaranteed as a collapsed neck ring surrounded by a sheath. 13. A device to be constructed according to claim 9, characterized in that that the user can determine the amount of gas resulting from the reaction of claim 9 himself can and reload with suitable cartridges after the reaction partner has been used up can, with the help of the gas generated, various inflatable objects, which after the operating principles of the main idea with the gas resulting from the above reaction can be puffed up.