UA123151C2 - Dry suit - Google Patents

Abstract

The dry suit is produced preferably as a one-piece combined suit made of a three-layer, water-tight but air-permeable, woven laminate with maximum 220 g/m2 mass per unit area, and also seamlessly includes the feet. A water-light zipper (4) extends from the crotch area up to the top edge of the collar (5). There is a water-tight zipper (4) on each of the sleeves (8), which extends rearwards from the front edge of the cuff (13) along the lower arm. With said watertight zipper (4, 7) the collar and chest region as well as the sleeves (13) and front arms (8) can open to a certain extent, providing an effective cooling function, which makes the wearing of the dry suit in non-critical mission phases significantly more comfortable and less tiring. In addition, said dry suit has a total weight of less than 1.5 kg and is correspondingly light to wear on the body.

Description

This invention relates to a comfortable, lightweight and breathable wetsuit of the dry type, designed to keep persons who have fallen into the water dry to prevent life-threatening hypothermia. Experts talk about protective diving suits (IRB)

A waterproof emergency suit or rescue suit is a special type of waterproof dry suit. It is intended for the protection of people who are in cold water as a result of an accident, usually after a sunken or overturned vessel has been abandoned, or for military use in the event of a water disaster or an aircraft emergency landing on water. Such a dry suit must maintain body heat in the suit and keep the wearer dry until rescued from cold water. These dry suits are fitted to the user's body and must be worn by the crew as a safety measure in case of danger of falling into the water during the expedition. Therefore, it is important that these suits are as light as possible, and that they can be put on quickly and easily, and that they are comfortable to wear. It is known that a person's chance of survival when he or she has fallen into water can be significantly increased by staying dry and maintaining body temperature, as this delays the onset of hypothermia.

Traditional drysuits are typically made of fiber-filled neoprene, have a face closure and flap, gloves, waterproof zippers, cuffs, neoprene pockets, and reflective strips, while limiting the wearer's freedom of movement as little as possible. They must meet the requirements of the International Convention for the Safety of Life at Sea (SOLAS) for the prevention of hypothermia and their use is intended primarily for personnel on board military aircraft, warships or military boats, ferries, offshore drilling rigs, lifeboats, high-speed emergency boats and for general use.

The challenge in wetsuit design is the conflict between different goals that must be resolved.

The suit should provide optimal protection against heat and moisture loss. However, the better it meets these characteristics, the more uncomfortable it is to wear, if its actual functionality is irrelevant. Due to waterproofness, for example, when using neoprene, sweating or breathing of the skin of the body is impossible. Accordingly, heat accumulates in

From the body, which is very unpleasant. The better the thermal insulation, the less comfortable it is to wear such a suit. Many wetsuits of the dry type with thick layers of thermal insulation materials are so rigid and bulky that their users can hardly put them on themselves. they need assistants to wear such a costume. If, for example, in the case of aircrews, the suit must be worn during the preparation or briefing phase for the flight, as well as during the flight debriefing, this is usually very uncomfortable for the wearer. People perspire in ordinary suits, although, in principle, the release of sweat does not lead to effective heat dissipation. As soon as a traditional dry suit is worn, the neck and wrists are hermetically protected from moisture, as a result of which any air exchange between the inner and outer surfaces, and therefore the surface of the body, is impossible. This leads to the fact that very quickly the person feels wet or moist body surface and suffers from heat build-up. Wearing such a dry wetsuit is therefore very unpleasant in the long run and significantly impairs comfort and performance. Every naval aviator will confirm this fact without hesitation.

Thus, the basis of this invention is the task of creating a wetsuit of a dry type, which, in addition to the function of keeping the wearer dry in water and thermal insulation in accordance with current standards, would be much lighter and much easier to put on and much more comfortable in exploitation In addition, the dry suit must be suitable for wearing in combination with an overload protection suit as described in UMO 02/012066114 AT, and in any case it must be suitable for donning and doffing by the user without assistance, and also have passive or optionally active cooling functions for phases of inactive use.

This problem is solved by a wetsuit for keeping people who have fallen into water dry to prevent hypothermia, which is a threat to their life, which is characterized by having at least one waterproof zipper for putting on and removing the dry wetsuit, in which the waterproof zipper separates the collar for opening, and that each sleeve has a waterproof zipper running along the forearm to unfasten the waterproof cuffs, so that the suit itself can be worn with the collar and cuffs unbuttoned during non-critical phases of the posture, allowing air exchange with the body surface, and that it can be quickly transformed from this state to a waterproof 60 state by closing all waterproof zippers.

The figures show this costume in two versions, their description is given below and their functions are explained.

Shown:

Figure 1. A wetsuit of a dry type is a wetsuit in a worn state, front view

Figure 2. A wetsuit of the dry type in the form of a two-piece suit, except for the bridge of textile material, which consists of a jacket and trousers, in the worn condition, front view.

As can be seen in Figure 1, the suit in this example is made as a jumpsuit 1, that is, a non-separable suit. The special feature of this suit is that it is made of a three-layer, fire-resistant, waterproof, breathable and draft-resistant laminated material with a weight per unit area of only 220 g/m2. Such a laminated fireproof material consists of an outer flame-resistant and tear-resistant fabric, followed by an adhesive layer, a membrane layer with a microporous structure, for example, based on polytetrafluoroethylene, with more than 10 million pores per mm, which makes this membrane waterproof but vapor permeable. On top of this is another adhesive layer followed by a fabric with aramid fibers (Kemia!"), which is particularly light, about 40 g/m x 10 95, and serves as a protective layer for the inner membrane. Thus, the laminated fabric can withstand pressure a water column of up to 10 meters, and therefore has high waterproof or waterproof properties, as well as being resistant to onrushing flow.The use of such a laminated fabric achieves a low total dry suit weight of less than 1.5 kg, which was hardly possible before of this time. This, in turn, greatly increases the comfort of wearing such a dry suit. Experiments have shown that it is so little bulky that it can be worn even under an ordinary suit, and passersby will not notice it. The fabric of a dry suit must be resistant to running flow, so that the dry suit can withstand very high speeds of the oncoming flow up to 600 knots or 1111 km/h, which occurs in the case of catapulting cat. seat and has an effect on the pilot. This resistance to oncoming flow is achieved due to the high tear resistance inherent in the thin outer refractory fabric.

In order to put on a wetsuit of the dry type, the person inserts his legs into the legs of the pants 2, and this one

The zo part further envelops the legs and keeps them protected from water so that the user can stand in water up to his knees or thighs, thanks to the fact that the legs 2 are made of a waterproof three-layer fabric, and seamlessly transition into the knee socks 3. The suit is easy to put on thanks to , that the waterproof zipper 4 runs from the crotch area to the top of the collar 5. To put on the upper part b of the suit, the person, along with the front main zipper 4, must also unfasten the two zippers 7 on the cuffs 13 and the front on the sleeves 8. After the top 6 of the suit can be pulled up, and in the process the hands can be pushed into the sleeves 8. The suit has at least one waterproof chest pocket 15 with a zipper, which can be closed with a waterproof zipper 14, and another waterproof zipper 18, which provides access to the chest area This is especially important if the drysuit is worn over another suit, particularly an overload protection suit . It was found that in this case the effectiveness of the suit for protection against overload is not reduced by the use of such a dry wetsuit.

In addition, the wetsuit of the dry type may optionally have a waterproof pocket 10 on the pants, which may also be closed with a waterproof fastener 9.

During preparatory and intermediate stages, when the suit does not have to be in standby mode, that is, during non-critical stages of the expedition, such a dry suit can remain open at the top of the collar 5 and at the front on the sleeves 8 due to the incomplete fastening of the fasteners 7 in these places and leaving them if necessary slightly open, and if desired, thanks to the incomplete closure of the main zipper 4 on the collar 5. Thus, an effective passive cooling function is ensured, which is currently impossible in the use of any other dry suit, and is perhaps the most important his advantage.

Traditional drysuits, as soon as they are put on, immediately cover the neck and wrists to protect them from water, as a result of which air exchange with the body is no longer possible, which is very unpleasant outside of emergency situations, which is the case most of the time when such a wetsuit is worn. type The cooling function of the dry suit, represented here by the unbuttoning of the collar 5 and cuffs 13, as well as the sleeves 8 in the front, however, provides the user with substantial and highly desirable relief in the practical use of the suit. Thanks to its inherent cooling function and special lightness, wearing this dry suit is much more comfortable than wearing closed dry suits of traditional design.

The main zipper 4 closes to the top edge of the collar only shortly before ready mode. The collar 5 on the upper edge is equipped with an elastic band 11, which adheres in a waterproof manner to the neck of the person in the suit, when the main fastener 4 is fully fastened.

Cuffs 13 on the front of the sleeve are made similarly. They end with a rubber edge 12 that goes around the zipper. When the fasteners 7 in the front on the sleeves 8 are fully fastened, such rubber edges 12 are closed behind the wrist around the forearm, ensuring waterproofness.

As shown in Figure 2, a wetsuit of a dry type can be made in the form of a two-piece suit with a jacket and pants 17, connected by a bridge of textile material. The trousers and the jacket are connected in a waterproof way with a fastener 16 that goes around the hips and partially goes into the fly. This design offers an additional cooling function in the thigh area, because when the zipper 16 is unzipped to a greater or lesser extent, the much-desired cooling function in the abdomen, thighs and lower back is achieved. Especially in the lower part of the back, as a rule, there is a particularly strong sweating. Except as noted, this suit is made identically to that shown in figure 1, i.e. it also has at least one waterproof breast pocket 15 which can be closed with a waterproof fastener 14 and a waterproof fastener 18 in the chest area for access to the inside of the dry suit from the outside. Next, as shown, this suit has a waterproof 10 pants pocket that can be closed with a waterproof zipper.

Thus, as described, such a dry suit is the only known cold and water protection for aircrews that can be worn in flight preparation and debriefing conditions with the collar unbuttoned to the lower abdomen, with the cuffs 13 and sleeves open at the front, and which at the same time provides the wearer with the necessary protection against cold water in emergency situations thanks to the quick fastening of waterproof fasteners.

In addition, since this type of wetsuit is the first to be made of a relatively thin, three-layer laminated material, it weighs less than 1.5 kg, and is therefore so light and unwieldy that it can be worn over a wetsuit to protect against overloads, and the functional properties of the latter are not violated if it is manufactured according to the design described in UMO 02/012066114. If it additionally combines functions

From the cooling suit, i.e. internally equipped with cooling flat channels into which expanded and therefore cold gas can be pumped, preferably in combination with cold air, for example, in the thigh area through the opening of a waterproof sleeve connected to a portable gas cylinder, in addition to protection against cold and moisture, it also provides an active, highly efficient cooling system during periods when it is worn only as a precaution. Gas and air ducts are then directed to all parts of the body with increased sweating and have outlets for removing heat from them. These points are located, in particular, on the lower back, on the thighs, under the knees, on the neck and in the chest area, under the armpits, in the area of the joints of the hands, as well as in the front on the sleeves that touch the inner sides of the forearms. The heat absorbed by this cooling gas or cold air is then expelled through the cuffs 13, which remain open, and the open collar 5, until the dry wetsuit is used for its intended purpose. Consequently, it offers a system that is even more comfortable and generates less heat, and is suitable for use on intercontinental flights as well as for expeditions to the tropics and polar regions.

The pilot or other crew members do not need assistance and can put on or take off the suit by themselves. This lightweight yet extreme fabric laminate was developed specifically for this dry suit. This innovative fabric laminate provides weight reduction and at the same time high strength and durability. In addition to providing waterproof and breathability to a certain extent, the entire suit is only 1.5kg weight.

This dry wetsuit features synthetic, waterproof, coated zippers

Made of fire-resistant fabric, which allows you to wear it open on the neck and hands during the entire phase before and after the flight, ensuring maximum comfort. Sleeves 13 opening at the neck and forearms provide significantly higher comfort and longer service life without affecting the user's productivity due to low deformation and therefore less fatigue experienced by the individual. The waterproof fit of the collar 5 is ensured by an elastic rubber seal 11 made of neoprene, silicone or a material with similar properties, which is applied to the fire-resistant fabric that is separated by the zipper 4, and at the same time seals the neck when the zipper 4 is closed. Just like the collar 5, the cuffs 13 at the ends of the sleeves have the same element, that is, an elastic band 12 that is divided by the zipper 7, which is applied to the flame-resistant fabric of the cuffs 13, and the elastic band 12 is made of neoprene, silicone or a material with similar properties.

The combination with the mentioned cooling system having gas or air channels in the suit 1 makes possible long exercises even in extreme environmental conditions with high temperature as well as high relative humidity, while the user does not experience significant fatigue. However, the user can always ensure full waterproofing and thermal insulation in a matter of seconds, meaning he or she simply has to fully fasten the waterproof fasteners 4, 7, 91 16.

The target groups for the use of such dry suits are mainly representatives of the following professions: - Pilots/crew members of jet fighters. - Pilots/crew members and passengers of helicopters, transport aircraft and special aircraft. - crews and passengers of sea vessels. - athletes engaged in all types of water sports (yachters, canoeists, kayakers, surfers, rowers, etc.).

List of drawing items 1 suit-overalls 2 pants

From golf 4 main zipper 5 collar 6 top of suit 7 zipper 7 front sleeves 8 sleeves 9 zipper for trouser pocket 10 trouser pocket with zipper 11 elastic collar 5 12 elastic cuffs

13 cuff 14 waterproof fastener for breast pocket 15 breast pocket 16 fastener between jacket and trousers 17 fabric bridge between jacket and trousers 18 waterproof fastener in the chest part to provide access to the inside of the suit.

Claims (10)

FORMULA OF THE INVENTION 1. Wetsuit for keeping people who have fallen into water dry to prevent life-threatening hypothermia, which is made of fabric laminate, the outer and inner sides of which are made of tear-resistant fire-resistant fabric, a waterproof membrane with a microporous structure on the basis of polytetrafluoroethylene and an inner layer of fabric, and which has waterproof zippers (4, 16) for donning and removing the dry wetsuit and on each of the sleeves (8) has a waterproof zipper (7) running along the forearm, which is characterized by that the waterproof seals on the neck and wrists are made in the form of rubber edges (11, 12), each of which is divided by a waterproof zipper (4, 7), in which the rubber edges (11, 12) are applied to a fire-resistant fabric and when fastening zippers (4, 7) are designed to provide waterproofing at the neck or at the wrists so that the suit itself can be worn unbuttoned at the collar and cuffs during non-critical stages of the task, which allows air exchange with the surface of the body, and that it can be quickly brought out of this state into a watertight state by fastening all watertight fasteners, and that from the inner to the outer layer the laminate material contains a layer of tear-resistant and fire-resistant fabric with a mass per unit area of 40 g/m2-10 95 on its outer side, followed by an adhesive layer on top of which is a waterproof but vapor permeable membrane with a microporous structure based on polytetrafluoroethylene with more than 10 million pores per 1 mm, on top of which there is an additional layer of glue, and then a fabric with bo aramid fibers as a protective layer for the inner membrane, so that such a three-layer, waterproof, fire-resistant and breathable fabric laminate has a maximum weight per unit area of 220 g/m, and the entire dry suit weighs less than 1.5 kg. 2. A wetsuit of the dry type according to any of the preceding items, characterized in that the three-layer laminated material provides such high water resistance and waterproofness that it can withstand a water column pressure of up to 10 meters. 3. A dry suit according to any of the preceding claims, characterized in that it is designed as a wetsuit (1) having a waterproof zipper (4) that extends from the crotch area to the upper edge of the collar (5). 4. A wetsuit of the dry type according to claim 1 or claim 2, which differs in that it is made in the form of a two-piece suit consisting of pants and a jacket, except for the textile bridge (17) between the pants and the jacket, and the pants and the jacket with connected at the hips with a waterproof zipper (16) that goes around the hips, with one side of the zipper running along the lower edge of the jacket, and on the other side a zipper (16) running along the waist, with the ends of the zipper ( 16) intersect, diverging laterally, with a bridge made of textile material (17) between the jacket and trousers. 5. A wetsuit of the dry type according to any of the previous clauses, which is characterized by the fact that it can be worn over the suit for protection against overload of the structure described in UUO 02012/066114, without violating the functions of such suit for protection against overload of the structure. 6. A drysuit according to any of the preceding claims, characterized in that it has at least one chest pocket (15) in the chest area, which is sunken deep and can be closed with a waterproof zipper (14) and a waterproof fastener - a zipper (18) in the chest area to ensure penetration of a dry suit worn over another suit or a suit to protect against overload. 7. A wetsuit of the dry type according to any of the preceding items, characterized in that it has at least one trouser pocket (10) which is closed with a waterproof zipper (9). 8. A wetsuit of the dry type according to any of the previous items, which is characterized by the fact that the three-layer fabric is resistant to an oncoming flow, that is, it can withstand air flows of about 1111 km/h. without damage due to the fact that the outer layer of the fabric is made of synthetic and aramid fibers and due to the fact that it is equipped with protection against separation of the waterproof zipper. 9. A wetsuit of the dry type according to any of the previous items, characterized in that it is additionally equipped internally with flat channels for the passage of gas, which can be pumped through the opening of a waterproof hose connected to a portable gas cylinder filled with expanded and therefore cold gas , and gas channels on the inside of the dry suit are directed to areas of the body with increased sweating, where there are exit holes for heat removal. 10. A wetsuit of the dry type according to claim 9, which is characterized by the fact that the outlet openings of the gas channels are located, in particular, in the area of the lower back, on the hips, under the knees, on the neck and in the chest area, under the armpits, in the area of the hand joints, as well as in the front on the sleeves that touch the inner sides of the forearm, so that the heat absorbed by the cooling gas can be transported to the outside through the open cuffs (13) and the collar (5), while the drysuit is used in non-critical stages of the exercise. shield Mashu tse vu Z Z iche / ach 14 v va i an ha gi r v she 18 ii "SHHI --i deco V. Why not! ry por» i ro / | and I | that in 4. І дн Хщ ЗВ : ШЧХ щи ит -2 -Е ! She about Sh | N v i / I U . and H A s penni H y Sho N V I pera shi sce: ia u ne i 7-4 iii" Ky Y Y y ! she shin i 8. 4, and i-e o. to paradise and - | i t KS it y kny Figure (c;