SE538838C2 - Recoil brake module for bullet weapons - Google Patents

Abstract

The present invention relates to a recoil brake module for firearms consisting of a module which is mounted at the front of the barrel of the weapon with the intention of effectively reducing recoil and rearward sound pressure against the shooter and against persons in the vicinity of the firing range. The recoil brake module, comprising a functional recoil nut (15) which is manufactured in one piece where the outer (4) and inner (7) pipes and lids (9) are attached. The recoil brake module is placed over the barrel of the weapon (10) where it is threaded so that the expansion chamber (6) is partially will enclose the barrel (10) of the weapon behind its mouth but where the recoil wall (13) and expansion chamber (5) in the recoil nut (15) will be located in front of the barrel (10) of the barrel (10). The recoil brake module recoil nut (15) has been threaded ( 1) at the front so that various accessories can be connected. Page 1 (1)

Description

Recoil brake module for bullet weaponBackground A recoil brake is a component that is attached to the front of the weapon's barrel with a thread or quick release and has the task of reducing the weapon's recoil by one or two openings directing the gas pressure backwards and upwards, which creates an opposite force.

The gases directed by the recoil brake push the barrel forwards / downwards when the projectile has left the barrel at the same time as the sound pressure is directed backwards, which entails a risk of pre-existing hearing damage to both shooter and spectator if effective hearing protection is not used.

As an alternative to pure recoil brakes, mufflers can be used, but they are not as effective as open recoil brakes with rear-facing openings. Hiram PercyMaxim invented and patented the first commercial muffler in the United States in 1908 under the name "Maxim Silencer". Several different patents have been registered since the soap principle for how sound and recoil attenuation works is known. The challenge lies in creating constructions with high efficiency in smaller volume and lower weight.

There are fl your reasons for rebounding, partly because the sight stays close or the target after a shot, partly because of the psychological discomfort in the face of a strong rebound that the sniper tightens, which leads to smaller hits. With recoil brake, this discomfort is reduced and the shooter shoots better.

When a weapon is fired, a series of events occur that lead to the burning of gunpowder to high pressure, which drives the projectile through and out of the barrel. When the projectile leaves the barrel, the gas expands very quickly, which causes a loud and harmful noise bang.

By enclosing the recoil damper, the expanding gases can continue to hit the wall pushing the barrel forward and reduce the recoil while allowing the primary pressure to expand in the encapsulated portion instead of being directed backwards.

The recoil module described in this patent application is encapsulated in a double tube which is threaded over the barrel. To maximize recoil recording and sound attenuation at the rear, the recoil receptacle nut is designed as a lightweight, strong functional component with at least three connection points. 1. Bracket for the barrel of the weapon by being fitted with different threads. Bracket for encapsulation of double tube placed over the barrel of the weapon. 3. Bracket for accessories (muffler, lighting, fl muffler, etc.) as threaded front on recoil nut.

The recoil module reduces recoil by up to 50% without increasing the sound pressure backwards.

Description of the invention Definitions Recoil module consists of recoil nut, inner and an outer tube and lid. The recoil module forms a closed chamber in front of and around the barrel of the weapon. The recoil module reduces recoil and lowers the sound pressure backwards.

Recoil nut is the vital and common functional component that forms a fastening element for outer tubes, the barrel of the weapon and accessories that are mounted at the front. The recoil nut is equipped with symmetrically placed ns ends that form the distance between the muzzle of the barrel and the recoil-receiving wall.

Outer tubes consist of the tube that is placed over the barrel together with inner tubes. Outer tubes are attached to the recoil nut and form a bracket for inner tubes.

Inner tubes protect the barrel of the weapon and form part of the expansion chamber together with outer tubes and recoil nut. Inner pipes are screwed into outer pipes with an extension-through thread.

Lid is the component that provides a mechanical protection at the back of the weapon's barrel. Each lid is drilled up to a diameter that fits the weapon's barrel. The lid is screwed onto the extended and continuous thread of the inner tube.

The accessory bracket consists of the thread that is placed at the front of the recoil brake nut where different types of accessories are connected.

Page 2 (4) List of figuresFigure 1 shows the recoil brake module in cross-section.

The barrel (10) of the weapon is surrounded by inner tubes (7) and threaded into the recoil brake nut (15) at the connection point (11).

Inner pipe (7) is fastened with thread in outer pipe (4) at connection point (8). The inner pipe thread (8) is extended so that the same thread also forms a bracket for the lid (9).

Outer pipe (4) with mounted inner pipe (7) is threaded on recoil nut (15) wide connection point (3) at the same time as inner pipe (7) is pushed over fl end (19) on recoil nut (15) so that inner pipe (7) ends up over fl end (19) and over the socket (12) on the recoil nut (15).

The space between inner tube (7) and outer tube (4) forms the expansion chamber (6) and is located above the barrel (10) and the expansion chamber (5) is the space in front of the thread (11) of the barrel and up to the recoil wall (13) bounded by inner diameter on outer pipes (4).

The flange (2) is an abutment for outer pipes (4) and an abutment for accessories that are attached to the thread (1) on the front part of the recoil nut (15).

The projectile leaves the barrel (10) and travels through the expansion chamber (5) and through hole (14) on the recoil nut (15).

Figure 2 shows recoil nut in perspective and in section.

Front thread (1) is intended for accessories that are threaded against the bracket (2). Outer pipe fastening thread (3) on recoil nut (15). Symmetrically placed fls (17) create a distance between the thread for the pipe (11) and the recoil wall (13), as well as the expansion volume (5). The recoil nut (15) has thin weight-bearing walls. Further weight reduction is achieved through outlets (12) above the barrel thread (1 1) and in front of the fl äns (19).

Page 3 (4) Detailed description The recoil module consists of recoil nut (15), outer pipe (4), inner pipe (7) and lid (9). Recoil nut (15) is made in one piece with symmetrically placed ns ends (17) which both creates expansion volume for gas and forms a distance to the recoil wall (13) limited by the inner wall (4) of the outer tube and the recoil nut expansion chamber (5) and the opening which forms a free passage into the rear expansion chamber (5). Recoil nut is provided with different threads (1 l) to fit different pipes. The recoil nut (17) is symmetrically placed for maximum strength and minimum weight. The front wall (13) of the recoil nut absorbs the force from the accelerating gases, which reduces the recoil. The recoil wall (13) also forms the base for double outer threads (1 and 3) separated by fls (2) which form abutments for outer pipes (4) that go backwards the barrel of the upper weapon and as abutments for accessories mounted on the front of recoil nuts (15).

The inner tube (7) is placed over the (end (19) on the recoil nut. To reduce weight, there is a socket (12) on the recoil nut whose depth varies depending on the thread (11).

After firing, burning gunpowder gases propel the projectile through the barrel and as soon as the projectile leaves the barrel, gases expand past the projectile counter-cooling wall (13) and towards the reinforced inside (4) of the outer tube, forcing gas to equalize pressure in the space between inner tube (7) and outer tube (4) . During the time that the projectile passes through the hole in the wall (14) of the recoil nut, the expansion core (5) is almost closed and the pressure increases. When the projectile has passed the opening in the recoil wall (14), the pressure is equalized through an opening (14) in the recoil wall (13).

The recoil nut (15) has been designed for the highest possible strength with a minimum of material for the lowest weight. The symmetrically placed flsens (17) in front of the mouth release expansion space which is limited in length and inner diameter of outer tubes (4). The construction with symmetrical flanges (17) creates a very low mechanical resistance during the approx. 50us that the projectile passes through the recoil wall (14) and has large significance for efficiency.

Patents with recoil brake without surrounding chamber have been excluded as references because only those with some form of chamber can be considered to be subject to comparison.

Page 4 (4)

Claims (3)

Recoil brake module for so-called weapons comprising an outer tube (4), an inner tube (7), a recoil nut (15) and a lid (9). The cover (9) is provided with a hole so that it can be threaded over the barrel of the weapon. The inner tube (7) is fastened in the outer tube (4) with a single elongated thread (8) whose extension forms a bracket for the lid (9). The recoil nut (15) has two ends, the first end being fixed in the outer tube with a thread (3) and the second end being inserted into the inner tube (7) and fastened to the barrel of the weapon (10) with a thread (1 1). At the first end of the recoil nut, a recoil wall (13) is provided with holes for projectile (14) and with symmetrically placed fl ends (17) which separate the recoil wall from the other end of the recoil nut. An expansion chamber (5) is formed between the recoil wall and the other end of the recoil nut which is attached to the barrel of the weapon and between the outer and the inner tube. Recoil brake module according to Claim 1, characterized in that the recoil nut (15) is made in one piece with symmetrically placed fl grooves (17) which form a distance between the front recoil wall (13) and the rear part of the recoil nut provided with a thread (11) which forms a bracket. for the barrel of the weapon (10) and the recoil nut (15) is fitted with a thread (3) to which the outer tube (4) is attached. Recoil brake module according to Claim 2, characterized in that the recoil nut (15) is provided with an end (2) which forms an abutment for the thread (3) for the outer tube (4). The flange (2) also forms an abutment for a front thread (1) where accessories such as mufflers, lighting, sight etc. can be attached. Page 1 (1)