RU2714948C1 - Fur coupling for sniper hand heat insulation when firing a sniper rifle - Google Patents

Abstract

FIELD: clothes.

SUBSTANCE: invention relates to winter outer clothes and, in particular, to systems for protection of sniper hands against frostbite during firing from sniper rifle and is intended for heat insulation of hand sniper hand at prolonged waiting, aiming and execution of several shots in frost. Technical result is achieved by that the upper part of the right side wall of the coupling is made with a through shaped incision, which in the operating position of the coupling in the area of the projection of the sleeve-opening window and the trajectory of reciprocal movement of the handle of the rifle arm forms in the wall a flap of elongated shape with rounded angles and with a base, providing external flap deflection upward and simultaneous opening in wall of hole having length and width exceeding by 6–12 mm accordingly distance between maximum remote points of trajectory and window and distance between lower and upper edges of window, as well as due to the presence of a cast plastic permanent zip tape, made in a structural modification of type "A", sewn by its side edges, respectively, to free edges of the flap and a hole, providing multiple attachment to each other and their detachment, and due to the presence of belts firmly attached by their ends to the external surface of the flap in the front and back parts thereof perpendicular to its longitudinal axis and in direction from it, providing reliable fixation of the flap in the bent position.

EFFECT: device ensures heat preservation in fingers of working hand at long-term waiting, sighting and multiple firing at frost and ejection of shell cases from rifle beyond confines of coupling.

1 cl, 3 dwg

Description

The invention relates to winter outerwear and, in particular, to systems for protecting the hands of a sniper from frostbite when fired from a sniper rifle, and is intended for thermal insulation of the brush of a working hand of a sniper with prolonged waiting, aiming and firing several shots in the cold.

The fact is that with prolonged waiting and aiming in the cold and with a strong cold wind, the sniper has to reliably keep heat in his body, especially in the index finger of his working hand, since an accurate shot can be performed only when the trigger is pulled with a warm shooting finger. However, there is currently no winter sniper rifle, so in winter a sniper is forced to use a summer rifle, which does not protect his hands from hypothermia and frostbite. In this regard, today, while aiming and shooting from a rifle, the sniper brush comes into contact with the cold stocks, and the bare index finger comes into contact with the cold trigger, which is also made of metal. In this regard, with a long wait and aiming in frosty weather, the sniper cools the working hand, in the working hand the shooting finger cools earlier and harder than anyone else, in which the index finger is most often used. This leads to the fact that in the index finger there is a feeling of aches and pains, the soft tissues of this finger, including the pillow, lose tactile sensitivity and elasticity.Therefore, the index finger becomes painful, insensitive to touching the trigger, poorly controlled and stiff. This worsens the mood of a sniper, prevents him from performing a timely shot and reduces the accuracy of his shooting.

To this we must add that to date there are no winter sniper gloves with thermal insulation of the fingers.

Consequently, the problem of protecting the hands of a sniper from hypothermia and frostbite in severe frost has not yet been solved by special devices of a rifle and mittens. Therefore, to insulate hands in the cold, a sniper is forced to use ordinary thick gloves and / or independently upgrade them in the field.

In particular, a warm thick gauntlet is known from the prior art (Potapov A. The art of a sniper. Special Forces. SECTION 6. MASKING THE SNIPER POSITION IN THE AREA. Https://www.e-reading.club/bookreader.php/1006737/Potapov_-_Iskusstvo_snaypera. html. Found on the Internet 01/31/2019).

However, the known device does not specify the design features of the mitten, its shape, dimensions and materials from which it is made. Moreover, the known device does not provide the use of a winter mitten. In this regard, the known device is not ready for thermal protection of the hands of a sniper during aiming and firing from a sniper rifle in severe frost. To bring the well-known mitten into alertness, the sniper himself is forced to make a slot in it for the shooting finger, since it follows from the prior art that “The left arm must somehow be in a warm thick gauntlet - both for warming and in order to neutralize the pulsation of the arm. The right hand should also be in the gauntlet, namely in the gauntlet, and not in the glove, so that the fingers are warmed better. A slot is made in the right gauntlet for the shooting index finger. If necessary, a firing finger is put out of the mitten and lays down on the descent. Of course, both mittens should be white or covered with white covers ”(Potapov A. The Art of the Sniper. Special Forces. Https://www.e-reading.club/bookreader.php/1006737/Potapov_-_Iskusstvo snaypera.html. Found on the Internet 01/31/2019).

Thus, in the well-known warm thick gauntlet, there is no slot for expelling exclusively one shooting finger. In addition, in the well-known mitten there is no slot for introducing into it the brackets of the trigger mechanism together with the index finger of the sniper in order to jointly shelter them from overcooling in the cold. This makes it impossible to use the well-known mitt for thermal protection of the sniper’s hand when aiming and shooting from a sniper rifle. All this narrows the scope, reduces the efficiency, safety and accuracy of the known device.

In this regard, as a prototype of the claimed invention, a winter camouflage fur clutch for a sniper arm was selected, characterized in that the body has the shape of an open hollow conical cylinder with a longitudinal section of the wall 3/4 of the length from the base of the cone and with straps, while the body is made of tanned sheepskin with fur directed inward, has dimensions that ensure dressing on the breech from the muzzle end, covering the neck, butt handle, trigger guard, adult male hand in working position When the index finger touches the trigger, and the belts are made of stretchable material, one belt is attached with the entire surface of one plane to the outer surface of the coupling along the edge of the entire perimeter of the hole from the top side and squeezes it to the dimensions that provide circular covering of the barrel in front of the trigger guard, others 2 the belt is firmly attached with its own ends to the outer surface of the coupling on one side of the section, respectively, in the initial and central parts of it in the direction from the section and perp According to him, the free ends of these belts have fasteners, while the sizes of the belts and fasteners provide reliable fixation of the cut edges of the coupling in working condition, the case, belts and fasteners are white, maintain integrity and high elasticity under conditions of repeated bending-unbending temperature 0- -80 ° С (RU 2677070).

A disadvantage of the known device is the narrow scope, low efficiency, safety and accuracy. The fact is that the known clutch does not provide the presence of an oblong hole located in the right side wall in the area of the projection of the sleeve window of the rifle and the trajectory of the reciprocating movement of the handle of its bolt, with dimensions exceeding the distance between their extreme points in length and in width window width. Therefore, the well-known camouflage fur clutch does not provide a free ejection of spent cartridges from a rifle outside the clutch. In this regard, in a known device, a shot sleeve thrown from a sleeve window is hit with great kinetic energy in the right wall of the coupling and pushes it outward with force. This leads to the following consequences. In the best case, a spent sleeve together with powder gases increases the internal volume of the coupling, but does not violate its integrity. In this case, the sleeve remains in the cavity of the coupling and under the influence of gravity falls into its lower part, where it lies on the index finger of the sniper and prevents him from making the next shot. In the worst case, the spent sleeve together with the powder gases forcefully pushes the clutch wall outward, inflates the clutch’s internal cavity, tears off its belts and violates the integrity of the clutch cavity. In this case, the sleeve and powder gases open the inner cavity of the coupling, after which warm air comes out of it and cold air is lowered into the cavity of the coupling. The sniper’s hand is surrounded by cold or even frosty air. Therefore, the known device when firing from a rifle does not provide thermal insulation for the fingers of the sniper’s hand, as well as its safety, which contributes to hypothermia of the fingers, and this makes it difficult to shoot accurately in the cold.

A device is known under the name “Tahka gloves-coupling”, characterized in that the case has the shape of a clutch for hands, formed of two mittens, cut across, elongated and connected to each other by their elongated parts into a single clutch. In the middle part of the coupling cavity, there is a free cavity, the central part of the upper wall of which is made of transparent and colorless material, and the transparent part of the wall has dimensions that allow light to enter the cavity and visualize the smartphone located between the hands of both hands (https: // novate .ru / blogs / 260417/41053 / (https://novate.ru/blogs/260417/41053/. Found on the Internet January 30, 2019).

A disadvantage of the known device is that it is not intended for thermal insulation of the hand of one hand, namely, the working hand of a sniper when aiming and shooting from a sniper rifle in the cold.

A significant disadvantage of the device is that it does not provide the presence of an oblong hole in the wall in the area of the projection of the sleeve window of the rifle and the projection of the trajectory of the reciprocating movement of the shutter handle. Therefore, the known device does not provide free ejection of spent cartridges during firing from a sniper rifle and the unimpeded movement of the shutter handle.

In addition, the disadvantage of the known device is the lack of a through slot in it, intended for dressing the coupling on the barrel and magazine part of the butt in the presence of an installed optical sight.

The disadvantage of this device is the lack of belts that provide reliable fixation of the clutch on the rifle together with the sniper arm for thermal protection of the hand when shooting from a sniper rifle in the cold.

All this narrows the scope, reduces efficiency, safety and accuracy.

Known heat-shielding mitten, comprising a housing formed by the back and palm parts, and a finger for the thumb. All elements of the mitten are made multilayer, consisting of the outer, inner and intermediate layers. The ratio of the thicknesses of the layers 1: (0.02-20.83): (0.11-68.3). The back and palms of the mitten are made symmetrical from a single part connected by a seam. The housing in plan is made rectangular, or one-sided, beveled, or triangular, or rounded. The file is formed from a single part and sewn with its base with the palms and backs of the mitten so that it forms uniform flat surfaces with the palms and backs, with the tip pointing upwards, which increases the heat-shielding properties of the mitten and its wear resistance (RU 2171081).

A disadvantage of the known device is the narrow scope, low efficiency, safety and accuracy. The fact is that the known device does not provide thermal insulation of the sniper’s working hand in cold weather when its exposed index finger comes in contact with the trigger of a sniper rifle located inside the bracket of its trigger mechanism. The device does not provide the creation of a fur cavity for the sniper’s exposed hand along with the trigger and the trigger of the rifle when the index finger is inside the space bounded by the trigger guard and the lower part of the butt of the rifle. In this regard, the well-known heat-shielding mitten does not retain heat in the working hand of a sniper in frosty weather with prolonged waiting, aiming and shooting in the cold. Therefore, the well-known mitten is not suitable for protecting the sniper’s hand from excessive cooling and frostbite during long-term waiting, aiming and shooting in the cold in the field.

The objective of the invention is to expand the scope, increasing efficiency, safety and accuracy due to the implementation of the upper part of the right side wall of the coupling with a through figured cut forming an elongated flap with rounded corners and with a base that ensures the flap is bent upward in the working position of the coupling while opening in the wall of the coupling of the fingerprint hole located in the projection area of the sleeve window and the path of the reciprocating movement of the wine shutter handle and having dimensions that are 6 to 12 mm larger than their total length and window width, as well as due to the presence of an all-in-one plastic zipper tape having an “A” type construction sewn with its side edges to the free edges of the flap and hole, providing multiple attachment to each other and their detachment, and due to the presence of belts that are firmly attached with their ends to the outer surface of the flap in the front and rear parts of it perpendicular to its longitudinal axis and in the direction from it, echivayuschih secure fixation of the flap in the folded position and the safety of open holes.

The technical result is the preservation of heat in the fingers of the working hand during prolonged waiting, aiming and multiple shooting in the cold and unhindered ejection of spent cartridges from the rifle outside the clutch.

The essence of a fur clutch for thermal insulation of a sniper’s hand when firing from a sniper rifle, consisting of a body made of tanned fur sheepskin with inward-looking fur in the form of an open hollow conical cylinder with a longitudinal section of the wall at a% length from the base of the cone, which has dimensions that can be worn on the breech part from the muzzle end, covering the neck, butt handle, trigger guard, hand of an adult male in working position when the index finger touches the slopes hook, with a closed window and straps made of stretchable material, one of which is attached with the entire surface of one plane to the outer surface of the coupling along the edge of the entire perimeter of the hole from the top side and compresses it to the dimensions that provide circular covering of the barrel in front of the trigger guard, another belt firmly attached with its one end to the outer surface of the coupling on one side of the cut in its initial part in the direction from the cut and perpendicular to it, the free ends of the belts have elements cr Insulations, sizes of belts and fasteners ensure reliable fixation of the cut edges of the coupling in working condition, the case, belts and fasteners are white, maintain integrity and high elasticity under conditions of multiple bending-unbending at a temperature of 0 - -80 °, is that the upper part of the right side wall of the coupling is made with a through figured cut, which in the working position of the coupling in the projection area of the sleeve window and the trajectory of the reciprocating movement of the shutter handle ottovki forms a flap of oblong shape in the wall with rounded corners and with a base providing external folding of the flap upward and simultaneous opening of a hole in the wall having a length and width 6-12 mm greater than the distance between the most distant points of the trajectory and the window and the distance between the lower and the upper edges of the window, as well as due to the presence of a cast plastic zipper tape all-in-one, made in a structural modification of type “A”, sewn with its side edges, respectively but to the free edges of the flap and the hole, providing multiple attachment to each other and their detachment, and due to the presence of belts, firmly attached with their ends to the outer surface of the flap in the front and rear parts of it perpendicular to its longitudinal axis and in the direction from it, providing reliable fixation of the flap in a bent position.

In this case, the implementation of the upper part of the right side wall of the coupling with a through figured cut forming an elongated flap with rounded corners and with a base that ensures that the flap bends upward in the working position of the coupling while opening an imprint hole in the coupling wall located in the projection area of the sleeve-exit window and the trajectory of the reciprocating movement of the handle of the bolt of the rifle and having a length exceeding by 6-12 mm the distance between their extreme points remote from each other, and a width exceeding the window width by 6-12 mm, provides, on the one hand, the heat in the sniper’s exposed working hand inside the cavity of the fur clutch due to the presence in the side wall of the hole completely closed by a flap, and on the other hand, the bolt handle moves freely along working trajectory and free flight of spent cartridges outside the rifle and clutch due to an open hole with dimensions exceeding their overall dimensions. The fact is that the presence of a flap with a hole-imprint in the wall of the coupling provides the flap with the role of a cork for this hole. Therefore, the flap is able to close the hole tightly, which ensures the creation of a non-blown cavity by the sleeve and the heat protection of the sniper hand during prolonged waiting and aiming. On the other hand, the presence of a hole made in the form of a flap imprint and located in the upper part of the right side wall of the fur clutch in the area of the projection of the sleeve window and the trajectory of movement of the rifle shutter handle, and having a length and width exceeding by 6-12 mm, respectively, the distance between their extreme extreme points, the width of the sleeve exit window ensures unhindered ejection of spent cartridges outside the sleeve and the shutter moves freely along its working path without opening I coupling cavity, without unfastening the coupling fastening belts and without bending the right side wall of the coupling from the bolt of the rifle. All this preserves the winter camouflage of the summer rifle, accelerates its reloading, eliminates the accumulation of spent cartridges in the cavity of the coupling, the integrity of the cavity of the fur coupling, the preservation of heat in its cavity and in the working arm before, during and after the shot, therefore it expands the scope of application, increases efficiency, safety and accuracy of the device.

The specified range of oversizing of the hole by 6-12 mm of the maximum dimensions of the sleeve exit window and the trajectory of movement of the shutter handle is due to the fact that such hole sizes provide an indentation of the edges of the coupling wall from the corresponding edges of the sleeve output window by 3-6 mm. Moreover, the specified deviation of the edge of the wall of the coupling from the edge of the window closest to it provides, on the one hand, the free ejection of spent cartridges, on the other hand, reliable thermal insulation of the fingers of the working arm with a fur coupling. The fact is that finding the edge of the sleeve from the edge of the sleeve window closer than 3 mm does not allow the ejection of spent sleeve due to the sleeve fur, which can protrude into the hole and the window and make it difficult to eject the sleeve. In addition, with such an arrangement of their edges, the clutch’s fur can be captured by the outgoing sleeve, which can disrupt the clutch fixation in the working position and the integrity of its cavity. On the other hand, finding the edge of the coupling away from the edge of the window at a distance exceeding 6 mm does not provide reliable thermal insulation of the thumb and forefinger of the sniper’s working hand when firing, since when the bottom edge of the fur coupling in the imprint hole retreats from the lower edge of the sleeve window to a distance of 6 mm or less of this, the coupling retains its heat-shielding properties for all fingers of the working hand, and when the lower edge of the imprint hole is lower than the lower edge of the sleeve window by a distance of more than 6 mm, m Ufa does not preserve the thermal insulation of the thumb and forefinger of the sniper’s working hand, since the right side wall of the coupling ceases to fit snugly on the butt and a gap appears between the butt surface and the inner surface of the coupling through which warm air exits from the coupling cavity and instead into the coupling cavity cold air enters.

The presence in the claimed device of the zipper tape molded plastic one-piece, made in a structural modification of type "A", sewn with its lateral edges respectively to the free edges of the flap and the hole, providing multiple attachment to each other and their detachment, provides reliable fixation of the edges of the flap to the edges of the hole in the wall of the coupling and the quick disconnection of the flap from the edges of this hole. At the same time, a reliable fixation of the flap to the edges of the hole eliminates the accidental premature opening of the hole, which ensures the winter masking of the summer rifle and protects the bolt of the rifle from falling into it of snow, hail, raindrops, branches, leaves, needles, scales of cones, as well as sand, road and building dust and other debris during prolonged waiting and unexpected explosions, which eliminates the clogging of the bolt, ensures the smooth operation and high accuracy of rifle shooting.

The fact is that according to the purpose the zipper is molded plastic one-piece, made in a constructive modification of type “A”, is traditionally made “for finishing pockets, cuts on jackets, trousers, skirts, sweaters, for covers of pillows, furniture, awnings, tents, bags ”(http://baltum.ru/molnii/traktor/319/. Found on the Internet 01/31/2019). Therefore, the proposed finish of the edges of the flap and the hole with such a zipper ensures the use of this element in the claimed design for its intended purpose. In this regard, the claimed design of fixing the edges of the flap to the edges of the holes in the wall of the sleeve provides the inventive fur sleeve with high reliability, durability and the ability with high efficiency and reliability to safely and accurately retain heat in the sniper’s hand both during prolonged waiting and aiming, as well as during shots from a sniper rifle.

The presence of belts firmly attached with their ends to the outer surface of the flap in its front and rear parts perpendicular to its longitudinal axis and in the direction from it, providing the flap with reliable fixation in the bent position, provides the imprint hole with reliable openness, free ejection of spent cartridges outside the rifle and fur clutch, reliable thermal insulation of the sniper’s working arm located inside the coupling’s closed cavity and high firing accuracy, regardless of the discarded spent cartridges.

Therefore, the claimed device expands the scope of application, increases efficiency, safety and accuracy, since it provides thermal insulation for the sniper’s exposed working hand in the working position, regardless of waiting, aiming and firing a rifle in the cold, regardless of the spent cartridges thrown by the extractor and snow and debris falling on the rifle.

A brief description of the drawings.

In the drawings of FIG. 1, FIG. 2, and FIG. 3, a fur clutch is shown schematically for insulating a sniper’s arm when firing from a sniper rifle.

FIG. 1. The working part of the sniper rifle (A) (side view) and the fur clutch for thermal insulation of the sniper’s arm when firing from the sniper rifle (B) (top view) in the initial state. The rifle has a bolt handle 1 and a sleeve window 2. The upper part of the right side wall of the clutch housing with a slit and stretchable belts has a through-shaped sectional view forming a flap 3 with belts 4, the free edges of which are connected to the edges of the imprint hole using a closed zipper tape 5 with lock 6.

FIG. 2. A fur clutch for thermal protection of the sniper’s arm when firing from a sniper rifle in working condition until a sniper’s arm is inserted into its cavity (top view). The coupling has a flap 3 bent upwards with its fixing straps 7, an open hole 8, to the free edge of which a part of the zipper tape 5 is attached, and through the open hole the bolt handle 1 and the rifle sleeve 2 can be seen.

FIG. 3. Fur clutch for thermal protection of the sniper’s hand when firing from a sniper rifle in the working position after the sniper’s hand is inserted into it, after the shot, the ejected cartridge sleeve is ejected and after the bolt handle is pulled back to its extreme rear position (side view). The right side wall of the coupling has an opening 8, a flap 3 folded back with straps 7 fixing it. The shutter handle 1 is placed in the rear opening in the open hole, and a sniper brush is introduced into the cavity of the fur coupling. The wrist in the sleeve of the fur coat 9 is in close contact with the rear edge of the fur clutch.

The device is used as follows.

Currently, there are no winter sniper rifles providing thermal insulation of the sniper’s working arm in its working position, namely, in the position of full readiness for a shot. However, a winter camouflage fur clutch is known for protecting a sniper’s arm in a working position from frosty wind and snow in order to increase accuracy and protect the hand from frostbite during long-term aiming in the cold. However, the known clutch does not provide unhindered release of spent cartridges beyond its limits and the reciprocating movement of the shutter handle, since the clutch is made with a solid right side wall.

To carry out shots with prolonged waiting and aiming on a frosty day before completing a combat mission, a sniper wraps a summer sniper rifle with white cloth and supplements it with a fur clutch to insulate the sniper’s arm when shooting from a sniper rifle. Having chosen such a clutch, the sniper sets it in working position on the rifle, checks the accuracy of the clutch installation and fixes it in the selected position. After that, the sniper completely unfastens the tape-zipper on the right side wall of the coupling and bends the detached flap upward, ensures complete placement of the sleeve-exit window and the entire trajectory of the reciprocating movement of the shutter handle inside the hole in the coupling wall with the indentation of the edges of the coupling wall from the edges of the window by 3-6 mm and finally fixes the flap and sleeve. Then the sniper checks the reliability of maintaining the hole in the wall in the specified position when repeatedly closing and opening the hole with a flap and zipper, adjusts the position of the coupling and finally fixes it to the rifle in the adjusted position with the hole closed in the wall of the coupling.

From this moment on, the sniper rifle is ready for use, namely for firing after a long wait and aim. When a target appears, a sniper, using a non-working hand, unfastens the zipper, bends the flap up, fixes it in a bent position with the help of belts, takes aim at the target, presses the trigger with a warm index finger and makes one exact shot or several accurate shots. Then he removes the working hand from the fur clutch, with its help it unfastens the flap straps, closes the hole with a flap, fastens the zipper and puts on the working hand a regular army fur mitten.

The proposed fur clutch for thermal insulation of a sniper’s hand when shooting from a sniper rifle increases efficiency, safety, accuracy and expands the scope of use in cold weather in the military field by performing the upper part of the right side wall of the clutch with a through curly cut forming an elongated flap with rounded corners and with a base that ensures in the working position of the coupling that the flap bends upward while simultaneously opening an imprint hole in the coupling wall located in the region section of the sleeve window and the trajectory of the reciprocating movement of the rifle bolt handle and having dimensions greater than 6-12 mm, respectively, the distance between their maximum remote extreme points and the width of the window, as well as due to the presence of an integral plastic zipper tape, made in a structural modification type “A”, sewn with its lateral edges respectively to the free edges of the flap and the hole, providing multiple attachment to each other and their detachment, and due to the presence of I belts that are firmly attached with their ends to the outer surface of the flap in the front and rear parts of it perpendicular to its longitudinal axis and in the direction from it, ensuring reliable fixation of the flap in the bent position. The fact is that the fur clutch, due to the presence of an opening in its right wall in the projection area of the sleeve window and the trajectory of the rifle’s shutter handle, provides unhindered ejection of spent cartridges and reloading of the rifle using the shutter handle, and due to the presence of a flap-valve that closes and opening with a zipper a hole-fingerprint valve in the wall, the clutch ensures the shutter is clean and working, good heat insulation for the sniper's hand when waiting, aiming and shooting from sniper screws and in the cold, during a snowfall, fall on the rifle construction debris, dust and dirt.

Claims (1)

A fur clutch for thermal insulation of a sniper’s hand when shooting from a sniper rifle, consisting of a body made of tanned fur sheepskin with fur directed inward in the form of an open hollow conical cylinder with a longitudinal section of the wall on

lengths from the base of the cone, having dimensions that can be worn on the breech side from the muzzle end, covering the neck, butt handle, trigger guard, adult male hand in working position when the index finger touches the trigger, with the window closed and with from stretchable material with belts, one of which is attached with the entire surface of one plane to the outer surface of the coupling along the edge of the entire perimeter of the hole from the top side and compresses it to dimensions, ensuring which cover the barrel in front of the trigger guard, the other belt is firmly attached at one end to the outer surface of the coupling on one side of the cut in the initial part in the direction from the cut and perpendicular to it, the free ends of the belts have fasteners, the dimensions of the belts and fasteners provide a secure fit cut edges of the coupling in working condition, the case, belts and fasteners are white, maintain integrity and high elasticity in conditions of multiple bending-unbent I at a temperature of 0 - -80 °, characterized in that the upper part of the right side wall of the clutch is made with a through figured cut, which in the working position of the clutch in the projection area of the sleeve exit window and the trajectory of the reciprocating movement of the rifle bolt handle forms an elongated flap in the wall with rounded corners and with a base providing external folding of the flap upward and simultaneous opening of a hole in the wall having a length and width exceeding the distance between 6-12 mm, respectively at the most distant points of the trajectory and the window and the distance between the lower and upper edges of the window, as well as due to the presence of a molded plastic one-piece zipper tape, made in a structural modification of type “A”, sewn with its lateral edges to the free edges of the flap and hole, providing multiple attachment to each other and their detachment, and due to the presence of belts, firmly attached with their ends to the outer surface of the flap in the front and rear parts of it perpendicular to the longitudinal its axis and in the direction away from it, providing reliable fixation of the flap in a bent position.

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