This invention relates to a less-lethal device. More particularly, the invention relates to various mechanisms and components of a less lethal device, including a magazine configured to house a plurality of substantially spherical projectiles in a “staggered” configuration, a magazine including a catch formation, a barrel displacement mechanism, a projectile release mechanism and load indicator, a projectile detent, and a loading mechanism.
The use of lethal force by law enforcement agencies or personnel, private security companies, or even private citizens as defensive or self-defensive measures is generally met with dissent. Internationally, legislative and regulatory requirements generally tend to dissuade the use of lethal force, and instead tends towards defensive regimes in the less-lethal sphere.
For example, currently in the USA, proposed legislative changes seek to require law enforcement personnel to use less-lethal force to incapacitate an attacker, before resorting to lethal force.
In most cases, the effective range or accuracy of known or currently available less-lethal devices render these devices ineffective. Best known examples include tasers and lachrymatory substances such as mace (also known as pepper spray). Tasers are accurate and effective to a maximum of 15 feet. This falls within the currently permissible “shoot to kill” range of 21 feet. Consequently, the current less-lethal devices' inefficiency, inaccuracy and in-utility seem to render adherence to the proposed legislative provisions impractical. In some cases, the use of tasers are viewed as excessive use of force, and annually, as many as a thousand “wrongful deaths” are attributable to the use of tasers in an attempt to use less-lethal force by law enforcement agencies.
Also available are launchers (similar to paintball guns) shooting frangible projectiles filled with a lachrymatory substance. Even though these devices have increased ranges, they remain notoriously inaccurate, especially due to manufacturing imperfections and instability of the projectiles. These launchers are furthermore bulky and ergonomically unfriendly when carried on the person or when being handled.
One way to improve the accuracy of projectiles, is to impart spin to the projectile as it is launched. This is achieved by utilising launchers comprising rifled barrels. However, the use of rifled barrels usually falls within the purview of legislative provisions or bodies, such as the ATF (The Bureau of
Alcohol, Tobacco, Firearms and Explosives).
A need exists for a less-lethal device, capable of temporarily incapacitating a person effectively at a range exceeding that of currently available less lethal devices. A need furthermore exists for a compact and ergonomically friendly less-lethal projectile launcher that does not fall within the purview of legislative provisions or bodies, suitable for use by law enforcement agencies, correctional services, the military and civilians alike.
Known less-lethal devices, such as less-lethal pistols comprise a body with a grip portion, a barrel, a canister of compressed gas, a valve assembly arranged to vent gas to propel a projectile received within the barrel upon actuation by a firing mechanism (or trigger).
In a bid to reduce the overall size of the less-lethal device, the canister, which comprises a sealed mouth, is received within the body, and a puncture mechanism is provided for puncturing the sealed mouth, to allow compressed gas to flow towards the valve assembly.
Magazines of less-lethal devices that use spherical projectiles have very limited capacity and are often bulky and complex. Double or staggered stacking of spherical projectiles presents many problems, particularly because of small contact areas between subsequent projectiles. This often causes jamming of the spherical projectiles as they are unloaded from the magazine. To overcome this, complex followers that pivot to urge a last projectile from the magazine are sometimes used. This however adds complexity and unreliability to the design of the magazine.
The length of the barrel of a weapon impacts on the accuracy thereof. A trade-off between the length of the barrel and the overall size of the weapon therefore has to be found. The effective length of the barrel is negatively impacted when the projectile is loaded from a magazine and effectively pushed forwards into the rear or the breech of the barrel. A need therefore exists for a mechanism that allows the loading of a projectile, especially an elongate projectile, from a magazine, into a barrel of the device, whilst simultaneously ensuring that an effective length of the barrel can be as long as possible, whilst keeping the overall dimensions of the device as compact as possible.
As projectiles are received within the barrel of a device, they often tend to fall from the barrel before the trigger is pulled. Alternatively, in some cases, upon further “loading” of the device, more than one projectile is simultaneously loaded into the barrel. Both of these instances negate the use of the device.
Throughout this specification, a follower, when used in relation to a magazine of a weapon, will be understood to relate to a displaceable actuating member within the magazine, provided to urge projectiles received within the magazine towards a mouth of the magazine.
It is an object of the present invention to provide various components and mechanisms of a less-lethal device with which the applicant believes the aforementioned disadvantages may at least be alleviated or which may provide a useful alternative for the known arrangements and methods.
According to a first aspect of the invention there is provided a magazine for a plurality of substantially spherical projectiles, comprising:
The second follower may be inhibited from being displaced beyond a predetermined position along the length of the body. The first follower may be allowed to be displaced beyond the predetermined position towards the second end.
A guide formation may be provided for guiding the second follower relative to the body during displacement. The guide formation may comprise a groove formed on one of the body and the second follower, and a ridge or protuberance formed on the other one of the body and the second follower, the ridge or protuberance in use received within the groove.
When the first and second followers are located proximate the first end, the first and second followers may be situated side-by-side. A cross sectional dimension of the body towards the first end may exceed a cross-sectional dimension of the body towards the second end. Portions of opposing outer walls of the body located between the first end and the predetermined position may be substantially parallel to each other. Portions of the opposing walls of the body beyond the predetermined position in the direction of the second end may converge towards each other. A neck of the body may be formed proximate the second end, the neck defining an internal passage similar in shape and size to the opening. The opening may be substantially circular, and may be sized to allow the projectile to move through the opening without obstruction.
The first follower may be sized such that a portion of the first follower may protrude at least partially into the neck. The first follower may have a convex outer surface arranged to operatively urge against a projectile received through the opening.
The second follower may have a substantially concave outer surface arranged to operatively urge against a projectile received through the opening. A path followed by the first follower between the first end and the opening may follow a contour of the outer wall of the body. The path may therefore be non-linear.
A coupling arrangement may be provided between the first and second followers, such that as the first follower is moved against the bias towards the first end, the first and second followers may become coupled, so that the coupling arrangement may cause the first follower to urge the second follower from the predetermined position towards the first end.
The coupling arrangement may comprise a catch or shoulder formation on one of the first and second followers, and a hook or protuberance on the other one of the first and second followers.
According to a second aspect of the invention there is provided a magazine for a plurality of substantially spherical projectiles, comprising:
A neck of the body may be formed proximate the second end, the neck defining an internal passage similar in shape and size as the opening. The opening may be substantially circular, and may be sized to allow a projectile to move therethrough without obstruction.
A guide formation may be provided for guiding the follower relative to the body during displacement between the first and second positions. The guide formation may comprise a groove formed on one of the body and the follower, and a ridge or protuberance formed on the other one of the body and the follower, the ridge or protuberance in use received within the groove.
The follower may be biased towards the second position by a biasing means, in the form of a spring. The biasing means may be fixed to the first end, and may extend along the first channel when the follower is in the second position and may be inhibited from deflecting into the second channel.
The follower may be sized such that a portion thereof may protrude at least partially into the neck of the body when the follower is in the second position.
The follower may comprise a substantially convex outer surface arranged operatively to urge against a projectile received through the opening.
The first and second channels may extend substantially parallel to each other and may intersect each other along a length thereof, such that a projectile operatively received within the first channel may project partially into the second channel, and such that a projectile operatively received within the second channel may project partially into the first channel.
The first and second channels may terminate into a receiving zone. The receiving zone may taper/converge towards the neck portion of the body.
According to a third aspect of the invention there is provided a magazine for housing a plurality of projectiles, the magazine in use received within a less-lethal device and comprising:
The catch formation may be pivotably mounted to the outside of the body, so that the stopper may be pivoted between the first and second positions. The stopper may be biased towards the first position by a biasing means. The biasing means may be a torsion spring.
The catch formation may furthermore have an actuation surface for cooperating, in use, with an actuator situated within a body of the less-lethal device, so that when the magazine is inserted into the body, the actuator urges against the actuation surface to thereby cause the catch formation to be pivoted to the second position.
According to a fourth aspect of the invention, there is provided a barrel displacement mechanism for displacing a barrel of a device between a first and a second axial position, the displacement mechanism comprising:
The barrel may be axially slidable relative to a body of the device.
The formation may be a shoulder located on the barrel.
The actuator member may be pivotably mounted relative to the barrel, and may comprise at least a first actuation arm, an end region of which may be arranged to contact the formation.
The actuator member may further comprise a plurality of cogs, arranged in mesh with a plurality of cogs formed on the trigger member, so that when the trigger member is actuated, the cogs on the trigger member cause the at least first arm to pivot relative to the barrel.
The end region of the at least one arm may be provided in sliding contact with the formation.
The actuator member may comprise a second arm.
Alternatively, the formation may take the form of a rack, whilst the actuator member may comprise a number of cogs arranged to interact with the rack, to form a rack-and-pinion type interaction.
Alternatively, a link body may pivotably be arranged between the formation and the trigger mechanism, whilst the trigger mechanism may be provided with a cam surface for urging against the link body when the trigger mechanism is actuated, thereby causing the barrel to be displaced to the rearward position.
Further alternatively, the barrel displacement mechanism may comprise a pin received within a slot. The pin may be actuated via a lever associated with the trigger mechanism, when the trigger mechanism is actuated. When the pin is actuated, it may slide within the slot, causing the barrel to be displaced to the rearward position.
Yet further alternatively, the barrel displacement mechanism may comprise a multi-link or lever system. The links or levers may be pivotably interconnected by pins. The arrangement may be such that the links or levers pivot relative to each other when the trigger mechanism is actuated, thereby displacing the barrel to the rearwards position.
According to a fifth aspect of the invention, there is provided a release mechanism of a device, for releasing a projectile held by a receiving projection of a release valve thereof, the release mechanism comprising an indicator body, which is fixed to a body of the device such that a portion of the indicator body projects to an outside of the body of the device, wherein the indicator body is displaceable between an elevated position in which the indicator body stands proud of the body of the device, and a lowered position, the configuration being such that the indicator body is displaced to the elevated position when a projectile is held by the receiving portion, so that when the indicator body is urged towards the lowered position, a force is exerted on the projectile.
The receiving projection may comprise a displaceable release body which is operatively provided in contact with the projectile. A contact portion of the indicator body may urge against the release body, such that when the indicator body is displaced to the lowered position, the release body is displaced thereby.
The release body may be pivotably fixed to the receiving projection. The indicator body may be pivotably fixed to the body of the device.
The indicator body may be arranged to rest on the release body. The arrangement may be such that when a barrel moves to a second or rearward position relative to the receiving projection, the indicator body may be lifted from the release body.
According to a sixth aspect of the invention there is provided a projectile detent, comprising a body having a first portion mounted relative to a breech of a device and a second portion manufactured from a resiliently deformable material, the second portion being displaceable between a first position, in which the second portion retains a projectile within a breech of the barrel, and a second position, in which the projectile is allowed to be displaced from the barrel.
According to a seventh aspect of the invention there is provided a loading mechanism for loading a projectile into a bore/breech of a barrel of a device, the loading mechanism comprising a first and a second body being pivotably fixed relative to each other, the first and second bodies defining a cavity therebetween, and configurable between a first configuration, wherein the first and second bodies are pivoted towards each other, so that the cavity is substantially cylindrical, and a second configuration where the first and second bodies are pivoted away from each other to define an opening into the cavity through which operatively to receive the projectile into the cavity.
The loading mechanism may further comprise a biasing member for biasing the first and second bodies towards the second configuration. The biasing member may be a spring, such as a torsion spring. Alternatively, the first and second bodies may be biased to the first configuration.
The first and second bodies may each define a substantially semi-cylindrical inner surface.
The first and second bodies may be provided with a first and second actuating formation respectively, for operatively actuating the first and second bodies against the bias to the first configuration. The actuating formation may comprise a bevelled surface, for interacting with a corresponding slide formation disposed on an inside of a slide associated with the barrel of the device.
The arrangement may be such that, when the slide is operatively displaced from a first resting position to a second position, the slide formation may interact with the actuating formation, to allow the first and second bodies to move, under the bias of the biasing member, to the second configuration, so that the projectile may be received through the opening into the cavity, whilst when the slide is operatively displaced from the second position to the first, resting position, the slide formation may cause the first and second bodies to be pivoted to the first configuration, against the bias.
A first end of the loading mechanism may be arranged proximate an extremity of the barrel. The configuration of the loading mechanism may be such that, when the first and second bodies are in the first configuration, the cylindrical cavity aligns with the bore, and the first end of the loading mechanism may seal against the barrel, so that a length of the bore is extended by a length of the cylindrical cavity.
A second end of the loading mechanism may operatively be arranged proximate a pressure discharge valve which operatively vents a predetermined volume of compressed gas into the cavity causing the projectile to be discharged from the barrel. The arrangement may be such that when the first and second bodies are in the first configuration, the second end of the loading mechanism may seal against the discharge valve, so that the pressure discharge valve and bore may be arranged in fluid flow communication, and so that, when pressurised gas is discharged or vented via the pressure discharge valve, a projectile located within the cavity may be discharged from the device via the bore.
A barrel displacement mechanism may cause the barrel to operatively move away from the loading mechanism to define a gap between the first end of the loading mechanism and the barrel, when the first and second bodies are in the second position.
The barrel displacement mechanism may cause the loading mechanism to operatively move away from the discharge valve to define a gap between the second end of the loading mechanism and the discharge valve, when the first and second bodies are in the second position.
The first and second bodies may be allowed to slide axially on first and second pins respectively, between a rearward position wherein the loading mechanism seals against the discharge valve, and a forward position, wherein a gap is defined between the loading mechanism and the discharge valve. A biasing means may bias the loading mechanism to the forward position. A shoulder may limit the axial displacement of the loading mechanism on the first and second pins respectively.
The opening into the cavity may have a cross-sectional dimension similar to a diameter of the projectile.
The length of the first and second bodies may exceed a length of the projectile.
The first and second bodies, actuating formation and slide formation may be manufactured from a polymeric material and may be formed by way of injection moulding. Alternatively, the first and second bodies, actuating formation and slide formation may be of a metallic material and may have relatively smooth outer surfaces. The outer surfaces of the actuating formation and slide formation may be polished.
The device may be a less lethal device.
According to an eight aspect of the invention there is provided a barrel displacement mechanism for displacing a barrel of a less-lethal device having a body, between a forward and rearward axial position, the barrel displacement mechanism comprising an actuation member on a slide of the body, arranged for interacting with an actuation mechanism provided between the slide and the barrel, so that, when the slide is moved to a rearwards axial position, the actuation member interacts with the actuation mechanism, so that the barrel moves to the forward axial position, and so that, when the slide is moved to a forwards axial position, the actuation member interacts with the actuation mechanism, so that the barrel moves to the rearward axial position.
The actuation member may comprise an interacting surface and may take the form of a pin.
The actuation mechanism may comprise:
The arrangement may be such that the actuation member interacts with the first actuation surface of the actuation body when the slide moves towards the rearward axial position, thereby to cause the actuation body to pivot relative to body of the device, to cause the barrel to be displaced to the forward position, and such that the actuation member interacts with the second actuation surface of the actuation body when the slide moves towards the forward axial position, thereby to cause the actuation body to pivot relative to body of the device, to cause the barrel to be displaced to the rearward position.
The invention will now further be described, by way of examples only, with reference to the accompanying diagrams wherein:
A first example less lethal device, in the form of a less-lethal pistol, is indicated by reference numeral 10 in
A puncture mechanism 30 is provided to initially puncture or open a seal (not shown) provided over a mouth (not shown) of the canister 20. The canister 20 (also known as a cartridge) is of the known kind and is typically filled with compressed carbon dioxide (CO2). A pressure tube 32 connects the canister 20, via the puncture mechanism 30, to the release valve 24.
It will be understood that the less lethal device 10 could take various forms or configurations other than that of a pistol, and may include such configurations as rifles and the like. It will also be understood that components as described herein may be compatible with such other configurations. Throughout the remainder of this disclosure, references to the less lethal device 10 will be made in respect of a device of the pistol configuration.
A first example magazine for the device 10 is indicated by reference numeral 18.1 in
The magazine comprises an elongate hollow body 38 with a closed first end (not shown in the figures—it will however be understood that the closed first end comprises a bottom of the magazine, and is similar to conventional magazines in this regard) and a second end 42 which defines an opening 44 into the hollow body 38, through which spherical projectiles 36 are loaded into the hollow body 38, or received from the hollow body 38 (as will be described in more detail below).
The magazine 18.1 furthermore comprises a first follower 46 within the hollow body 38, which is displaceable from a position proximate the first end of the hollow body 38 (as is shown in
The magazine 18.1 furthermore comprises a second follower 52 within the hollow body 38, which is also displaceable from a position proximate the first end of the hollow body 38 (as is shown in
Typically, a guide formation (not shown) is provided for guiding the second follower 52 during its displacement, relative to the body 38. The guide formation typically comprises a ridge-and-groove formation. Therefore, either the ridge may be formed on an inner wall of the body 38 and the groove formed on the second follower 52, or the ridge may be formed on the second follower 52 and the groove may be formed on the inner wall of the body 38. The ridge and groove are arranged in mating fashion, so that the second follower 52 may be displaced in sliding fashion relative to the body 38.
When the first and second followers (46, 52) are located between the predetermined position 56 and the first end, the first and second followers (46, 52) are situated side-by-side (as is shown in
A first portion 62 of the body 38 (which is located between the first end and the predetermined position 56) has opposing outer walls (62.1 and 62.2) which are substantially parallel to each other.
A second portion 64 of the body 38 (which is located between the predetermined position 56 and the second end 42) has opposing outer walls (64.1 and 64.2) which converge towards each other.
A neck portion 66 of the body 38 is located proximate the second end 42. The neck portion 66 defines an inner cavity which, in cross-section, is similar in shape and size as the opening 44. The opening 44 is substantially circular, and therefore the inner cavity of the neck section 66 is substantially cylindrical. The size of the opening 44 and the substantially cylindrical inner cavity of the neck portion 66 is such that a spherical projectile 36 may pass therethrough without being obstructed.
Similarly, the first follower 46 is shaped and sized such that it may protrude at least partially into the inner cavity of the neck portion 66. The first follower 46 has a convex head 68, which comes into direct contact with a first spherical projectile 36.1 that is loaded into the magazine. The spherical head 68 urges against the first projectile 36.1 while the first follower 46 is displaced towards the first end. As the first follower 46 is displaced from proximate the opening 44 towards the first end, the first follower 46 generally follows a contour of the walls 64.1 and 62.1 of the second and first portions (64, 62) respectively. A path followed by the first follower 46 between the first end and the opening 44 is therefore non-linear. The first follower 46 may therefore pivot relative to the body 38 along the path. By providing the first follower 46 with the convex head 68, it is ensured that the first follower 46 continually contacts the first spherical projectile 36.1, irrespective of changes in the relative position of the first spherical projectile 36.1 and the first follower 46.
Since a path of the second follower 52 is linear (it is guided by the guide arrangement) the second follower 52 has a substantially concave portion 69 for receiving a second projectile 36.2.
A coupling arrangement which comprises a catch or shoulder formation 70 on the second follower 52, and a hook or protuberance 72 on the first follower 72 is provided. It will readily be appreciated that the coupling arrangement may take various other variations, such as where the hook or protuberance 72 is formed on the second follower 52 and the catch or shoulder formation 70 is formed on the first follower 46.
The magazine 18.1 is designed to house seven spherical projectiles in a staggered configuration. It will be appreciated that by loading the spherical projectiles 36 in a staggered configuration, the magazine 18.1 is significantly more compact than a magazine that doesn't allow a staggered configuration would be.
In
In
As can be seen in
Unloading of the spherical projectiles 36 from the magazine 18.1 occurs in reverse order as order of the loading of the projectiles 36 into the magazine 18.1, as was described above. A stiffness coefficient of the second spring 54 may exceed that of the first spring 50.
By providing two separate followers, and limiting the second distance 53, it is ensured that the first projectile 36.1 can easily be unloaded from the magazine 18.1, by the first follower 46 moving freely towards the opening 44, despite the converging of the opposing walls (64.1, 64.2).
A second example magazine for the device 10 is indicated by reference numeral 18.2 in
The magazine 18.2 comprises an elongate hollow body 80 defining an internal cavity 82, in which the projectiles are housed or received in use. The body 80 has a closed first end 84 and a second end 86 which defines an opening 88 through which spherical projectiles 36 are received into or from the internal cavity 82.
A ridge formation 90 projects from a side wall 92 of the body 80, into the internal cavity 82. The ridge formation 90 projects from the first end 84 towards the second end 86 for a first distance 94. As can be seen in the figures, the ridge formation 90 does not extend all the way to the second end 86.
The ridge formation 90 defines a first and second adjoining and substantially cylindrical channel (or race or groove) (96, 98), each for housing a number of spherical projectiles 36 in a staggered configuration (as is described in more detail below).
The magazine 18.2 also comprises a follower 100 which is displaceable from a first position to a second position relative to the body 80. In the first position, the follower 100 is located within the first channel 96 and proximate the first end 84, whilst in the second position, the follower has exited the first channel 96 and is located proximate the opening 88.
A biasing means, such as a spring 101 (shown in
The body 80 forms a neck 102 towards the second end 86. The neck 102 defines an internal passage which corresponds in shape and size to the opening 88. The opening 88, and therefore the internal passage of the neck 102 is substantially circular, and large enough to allow a spherical projectile 36 to pass therethrough uninhibited or without obstruction.
A guide formation 104 is provided for guiding the follower 100 during its displacement between the first and second positions relative to the body 88. The guide formation typically comprises a ridge-and-groove formation. As is shown in
The follower 100 is sized such that at least a portion thereof protrudes into the neck 102 when the follower is in the second position. The follower has a substantially convex outer surface or head 108, with a seat 110 for receiving a first projectile 36.1 received within the magazine 18.2.
The first and second channels (96, 98) extend substantially parallel to each other and intersect each other along a length thereof. When viewed from the top, the first and second channels (96, 98) are substantially 8-shaped or waisted. A lengthwise opening is therefore formed between the first and second channels (96, 98). Therefore, when a projectile 36 is located in the first channel 96, a portion of the projectile 36 will project into the second channel 98. Similarly, a projectile 36 which is located in the second channel 98, will partially project into the first channel 96 (it will be appreciated that the spring 101, by virtue of its diameter will also project slightly into the second channel 98, but will not deflect into the second channel 98).
The first and second channels (96, 98) terminate into a receiving zone 112. The receiving zone 112 tapers or converges towards the neck portion 102 of the body 88.
In use, the first projectile 36.1 is received through the opening 88 and neck 102 into the receiving zone 112, whilst being located in the seat 110 of the follower 100. The first projectile 36.1 therefore displaces the follower 100 by a first portion towards the first position. The first projectile 36.1 will therefore move with the follower 100 into the first channel 96 as further projectiles are received into the internal cavity 82. As a second projectile 36.2 is received into the internal cavity 82, outer surfaces of the first and second projectiles (36.1, 36.2) interact, so that the second projectile 36.2 moves towards the second channel 98.
An outer surface of a third projectile 36.3 will interact with the outer surface of the second projectile 36.2, so that the third projectile 36.3 will again be received in the first channel 96. In this way, subsequent projectiles are stored in a staggered formation.
Since both of the first and second projectiles (36.1, 36.2) project partially into the adjoining channel, the second projectile's 36.2 displacement within the second channel 98 is limited by the first projectile 36.1. Therefore, as projectiles are unloaded from the magazine 18.2 in use, and as the follower is displaced towards the second position under the influence of the bias, the first projectile 36.1 will urge the second projectile 36.2 towards the opening 88, whilst the second projectile 36.2 will urge the third projectile 36.3 towards the opening 88, and so on.
The interaction between projectiles in the adjoining channels enables the use of a single follower 100 to unload projectiles 36 from both channels (96, 98). Furthermore, since the size of the follower is such that it can fit at least partially through the neck portion 102 and the opening 88, it can be displaced along the length of the body, even though the body 80 converges in the receiving zone 82, allowing the first projectile to be unloaded from the magazine 18.2, without the follower requiring complex movable geometry. A path followed by the follower 100 is substantially linear, which aids in the effective discharging or unloading of the projectiles 36 through the opening 88. It will be understood that the specific geometry of the receiving zone is critical to the operation of the magazine 18.2 the form described above, and specifically with regards to the staggering of subsequent projectiles 36 in the adjoining first and second channels (96, 98).
It will again be appreciated that by loading the spherical projectiles 36 in a staggered configuration, the magazine 18.2 is significantly more compact than a magazine that doesn't allow a staggered configuration would be.
Unloading of the spherical projectiles 36 from the magazine 18.2 occurs in reverse order as order of the loading of the projectiles 36 into the magazine 18.2, as was described above.
Each of the first and second example magazines (18.1, 18.2) is provided with a catch formation 120. The catch formation 120 will however be described with specific reference to the first example magazine 18.1. The catch formation 120 is located proximate the opening 44 of the body 38. The catch formation 120 comprises a stopper 122 which is pivotably displaceable between a first position relative to the opening 44 (shown in
When the stopper 122 is in the first position, the opening 44 is partially obstructed so that the projectiles located within the magazine 18 is obstructed or inhibited from moving through the opening 44, whilst, when the stopper 122 is in the second position, the projectiles are free to move through the opening 44.
The catch formation 120 is mounted to the outside of the body 38, by means of screws 124 such that it is allowed to pivot between the first and second positions, as is indicated in
A biasing means in the form of a torsion spring (not shown) is provided for biasing the stopper 122 to the first position.
An outer surface of the catch formation 120 acts as an actuation surface 126. When the magazine 18 is inserted into the grip portion 14 of the device 10, an internal formation of the body 12, acting as an actuator 128 (best shown in
When projectiles are loaded into the magazine 18, the stopper 122 is pivoted to the second position by a user. Being located on the outside of the body 38 eases the handling of the catch formation 120 considerably.
The stopper 122 is shaped such that a resultant force exerted by the projectile on the stopper 122 does not cause the stopper 122 to be pivoted to the second position.
When the magazine 18 is inserted into the grip portion 14, the catch formation 120 is displaced so that the top spherical projectile 36 is allowed to move from the magazine 18, into the breech of the barrel 16.
In
In some cases, however, a user may opt to remove the magazine 18 before propelling the first spherical projectile 36.1 from the barrel 16. This is shown in
The combination of the location of the actuator 128, the fact that the stopper 122 is mounted to the outside of the body of the magazine 18 and the geometry of the stopper 122, ensures that the second spherical projectile 36.2 is retained within the magazine 18 when it is removed from the grip portion 14. Also, since the stopper 122 is mounted to the outside of the body of the magazine 18, the neck portion 102 of the magazine 18 is less bulky than neck portions of conventional magazines, and consequently, the neck portion 102 may be advanced closer to the breech of the barrel 16, to assist in retaining the second spherical projectile 36.2 when removing the magazine 18.
It will be appreciated that the catch formation 120 can equally be used with a magazine adapted for use with finned elongate projectiles (such as projectiles 202 described below and shown in
As is typically shown in
This prevents a spherical projectile 36 located within the receiving projection 130 from falling from the receiving projection 130 when the magazine 18 is removed from the grip portion 14. Alternatively, the retention flap 132 may be configured to be moved out of the way against the bias as the projectile is inserted into the receiving projection 130, and may return under the influence of the bias, to catch the projectile 36, preventing it from falling from the receiving projection 130.
The receiving projection 130 comprises a substantially cylindrical portion 134. A seal in the form of an O-ring 136 is provided around the cylindrical portion 134.
In order for the spherical projectile 36 to be received by the receiving projection 130, the barrel 16 needs to move away from the release valve 24 to create an opening for the spherical projectile 36 to move through. A barrel displacement mechanism 140 (shown in
The barrel 16 is biased towards the first (forward) position (as shown in
The barrel displacement mechanism 140 comprises a formation or shoulder 146 located on the barrel. The formation or shoulder 146 may be in the form of a ring which is integrally formed on the barrel. Alternatively, the formation or shoulder 146 may be in the form of a ring locked in position relative to the barrel by shrink fitting, a lock pin or the like. A low-friction bush 148 may be provided to urge against the formation or shoulder 146. The bush 148 may typically be manufactured from a wear resistant material, such as a plastics, self-lubricating material.
An actuator member 150 is provided in contact with the formation or shoulder 146. The actuator member 150 is arranged in communication with the trigger mechanism 26, such that actuation of the trigger mechanism 26 by the user, causes the actuator member 150 to urge against the bush 148 and formation or shoulder 146 thereby to displace the barrel 16 from the first (forward) axial position, to the second axial (rearward) position.
The actuator member 150 is pivotably mounted relative to the barrel 16, and is free to pivot about pivot point 152. The actuator member 150 comprises at least a first, but typically also a second, actuation arm 154 (one located on either side of the barrel 16). An end region 156 of the actuation arm is arranged in sliding contact with the bush 148, to urge against the formation or shoulder 146. The bush 146 is therefore provided between the formation or shoulder 146 and the end region 156 to reduce friction or prevent wear when the end region 156 displaces the barrel 16 to the second (rearward) position.
The communication between the trigger mechanism 26 and the actuator member 150 is in the form of cogs or teeth of respective gears provided in mesh. A plurality (typically three or more) cogs or teeth 158 are provided on the actuator member 150, whilst a plurality of cogs or teeth 160 are provided on the trigger mechanism 26. Therefore, when the trigger mechanism 26 is actuated by a user, the respective teeth (158, 160) interact, causing the arms 154 to pivot about the pivot point 152.
In
As soon as the barrel 16 is located in the second (rearward) position, the release valve 24 is actuated, so that the spherical projectile 36 is propelled from the barrel 16. When the trigger mechanism 26 is released by the user, the barrel 16 will return to the first (forward) position under the bias of the spring 144, allowing the subsequent spherical projectile 36 to be received into the receiving projection 130, ready to be propelled from the barrel 16.
In an alternative embodiment (not shown), the formation 146 may take the form of a rack, whilst the actuator member 150 may comprise a number of cogs arranged to interact with the rack, to form a rack-and-pinion type interaction between the trigger mechanism 26 and the barrel 16, arranged such that the barrel will be displaced to the rearward position when the trigger mechanism 26 is actuated.
In another alternative embodiment (which is not shown), the barrel displacement mechanism 140 may take the form of a link body pivotably arranged between the formation and the trigger mechanism 26, whilst the trigger mechanism 26 is provided with a cam surface for urging against the link body when the trigger mechanism 26 is actuated, thereby causing the barrel 16 to be displaced to the rearward position.
In yet another alternative embodiment (which is not shown) the barrel displacement mechanism 140 comprises a pin received within a slot. The pin is actuated via a lever associated with the trigger mechanism 26, when the trigger mechanism 26 is actuated or pulled. When the pin is actuated, it slides within the slot, causing the barrel 16 to be displaced to the rearward position.
In a further alternative embodiment (which is not shown) the barrel displacement mechanism 140 comprises a multi-link or lever system, wherein the links or levers are pivotably connected by pins. The arrangement may be such that the links or levers pivot relative to each other when the trigger mechanism 26 is actuated, thereby displacing the barrel 16 to the rearwards position. It will be appreciated that, by changing the configuration of the various links, such as by limiting relative displacements of some of the links, or by the addition or exclusion of a link, the arrangement may be changed to cause the barrel to be displaced to a forward position when the trigger mechanism 26 is actuated or pulled (as is described below in relation to the device 200).
In some cases, a spherical projectile 36 that has been received within the receiving projection 130 needs to be released (typically when the magazine 18 is removed from the grip portion 14). A release mechanism 176 is provided for this purpose.
The release mechanism 176 comprises an indicator body 178 which is held by the body 12 of the device 10, such that a portion of the indicator body 178 projects outside of the body 12. The indicator body 178 is displaceable between an elevated position (typically shown in
The release mechanism 176 is configured such that the indicator body 178 is displaced to the elevated position when a projectile 36 is held within the receiving projection 130. When the indicator body 178 is urged to the lowered position, a force is exerted on the projectile 36, to cause the projectile 36 to be released from the receiving projection 130. The receiving projection 130 comprises a displaceable release body 180, which is pivotably fixed to the receiving projection 130. When the projectile 36 is received by the receiving projection 130, the release body 180 contacts the projectile 36.
A contact portion 182 of the indicator body 178 urges against the release body 180. A spring (not shown) urges the indicator body 178 into contact with the release body 180. The spring is however, not strong enough to cause the release body to release the projectile 36 from the receiving projection 130. The release body 180 is therefore provided between the projectile 36 and the indicator body 178. When the indicator body 178 is urged to the lowered position by a user, the contact portion 182 transmits a force to the release body 180, which in turn transmits the force to the projectile 36, to cause the projectile 36 to be released from the receiving projection 130. The release body 180 is pivotably fixed to the receiving projection 130.
The indicator body 178 furthermore comprises an indicator surface 184 which is concealed when the indicator body is in the lowered position, but visible to a user, when the indicator body 178 is in the elevated position. The indicator surface 184 is typically marked, such that when the marked portion of the indicator surface 184 is visible, a user is notified thereby that a projectile 36 is located within the receiving projection 130 of the device 10.
In
If the user now removes the magazine 18 from the grip portion 14, and presses on the indicator body 178, the release body 180 will move the projectile 36 to the position shown in
Since the indicator body 178 is arranged to rest on the release body 180, it will be moved out of the way when the barrel 16 is displaced to the second (rearward) position.
Even though the projectile 36 is held in position in the receiving projection 130 by the retention flap 132, the projectile 36 might become dislodged if the barrel 16 is bumped or if the device 10 is dropped on its barrel 16. A projectile detent is provided to inhibit the projectile from accidentally becoming dislodged from the receiving projection 130.
The projectile detent comprises a detent body 190. A first portion 192 of the detent body 190 is fixed to the body 12 of the device 10. As can be seen in the top view of
A second example less lethal device, in the form of a less-lethal pistol, is indicated by reference numeral 200 in
The second device 200 differs from the first device 10 in that it is adapted specifically for propelling non-spherical projectiles (such as the projectile 202 shown in
The second device 200 comprises a magazine 212, which is provided for receiving a plurality of projectiles 202. The device 200 also comprises a barrel 214 from which projectiles 202 are projected in use. The barrel 214 differs from the barrel 16 in certain respects, as will be described below.
The device 200 further comprises a loading mechanism 216 which forms a breech of the device 200. The loading mechanism 216 is shown in more detail in
The loading mechanism 216 comprises a first body 218 and a second body 220 which are fixed to the device 200 such that the first and second bodies (218, 220) can pivot relative to each other in use. The first and second bodies (218, 220) define an internal cavity 222 between them. The first and second bodies (218, 220) are configurable between a first configuration (which is typically shown in
When the first and second bodies (218, 220) are configured in the second configuration, the first and second bodies (218, 220) are pivoted away from each other, so that an opening 224 is defined into the internal cavity 222. In use, the projectile 202 is received into the internal cavity 222 through the opening 224.
A biasing member, in the form of a spring (not shown) is provided to bias the first and second bodies (218, 220) to the second configuration.
The first and second bodies (218, 220) are pivotably fixed to the device 200 by means of first and second pins (226, 228) respectively, which are received within cylindrical slots formed towards top portions of the first and second bodies (218, 220). As is described more fully below, the first and second bodies (218, 220) are can furthermore slide axially along the first and second pins (226, 228).
The first and second bodies (218, 220) furthermore comprise first and second actuating formations or surfaces (230, 232) which are formed towards the top portion of the first and second bodies (218, 220).
Each of the first and second actuating formations (230, 232) comprise a first surface 234, a second surface 236 which is disposed at an acute angle relative to the first surface 234, and a connecting surface 238 which tapers, bevels or twists from the first surface 234 to the second surface 236. The arrangement is such that, when the first and second bodies (218, 220) are configured in the first configuration, the first surfaces 234 of the first and second actuating formations are substantially parallel, whilst, when configured in the second configuration, the second surfaces 236 are substantially parallel.
A slide (not shown) of the device 200 (which slide forms the top outer part of the body 12 surrounding the barrel 214, and which slide is similar to slides of conventional pistols) is provided with an internal actuation surface (not shown) which in use, is arranged proximate the first and second actuation formations (230, 232). When the slide is in a forward position, the actuation surface contacts the first surfaces 234, thereby forcing the first and second bodies (218, 220) towards the first configuration. When the slide is in a rearwards position, the actuation surface no longer contacts the first surfaces 234 but rather contacts the second surfaces 236 so that the first and second bodies (218, 220) are configured to the second configuration. The first and second bodies (218, 220) move to the second configuration under the bias of the spring, and so the actuating surface effectively limits the degree to which the first and second bodies (218, 220) may pivot away from each other under the bias of the spring.
When the slide is moved from the forward to the rearwards position, the actuation surface slides from the first surface 234, over the third surface 238 towards the second surface 236. The shape or contour of the third surface 238 therefore allows the first and second bodies (218, 220) to gradually move from the first configuration to the second configuration, and back.
It will be appreciated that the angular disposition of the second surfaces 236 relative to the first surfaces 234 causes the first and second bodies (218, 220) to change configuration. Therefore, the first surfaces 234 need not necessarily be parallel to each other when the first and second bodies (218, 220) are in the first configuration, provided the actuation surface is adapted for this. The same holds for the second surfaces 236 when the first and second bodies (218, 220) are in the second configuration.
It will be appreciated that the first and second bodies (218, 220) may alternatively (not shown) be biased by the biasing member, to the first configuration, in which case interaction between the actuation surface of the slide (not shown) and the first and second actuation formations (230, 232) will cause the first and second bodies (218, 220) to move, against the bias, to the second configuration. In such a case, the contour of the first and second actuation formations (230, 232) will be adapted accordingly.
The slide is biased towards the forward position, and therefore moves towards the rearwards position against the bias.
A first end 240 of the loading mechanism 216 is arranged proximate a first end 242 of the barrel 214. A shoulder arrangement 244 is provided between the first ends (240, 242) of the loading mechanism 216 and the barrel 214 so that, the loading arrangement 216 and the barrel 214 seals operatively, when provided in contact with each other (when the first and second bodies (218, 220) are configured in the first configuration). The shoulder arrangement 244 furthermore aligns the internal cavity 222 with the bore of the barrel 214, so that the loading mechanism 216 acts as an extension of the barrel 214. Therefore, when the first and second bodies (218, 220) are in the first configuration, the first end 240 of the loading mechanism 216 seals against the first end 242 of the barrel 214.
A second end 246 of the loading mechanism 216 is arranged proximate the pressure discharge valve 24. It will be noted that the pressure discharge valve 24 used in the device 200 differs slightly from the pressure release valve used in the device 10. More particularly, the pressure discharge valve 24 of the device 200 does not comprise a receiving projection 130, as this function is fulfilled by the loading mechanism 216. When the first and second bodies (218, 220) are in the first configuration, the loading mechanism 216 seals against the release valve 24. A second shoulder arrangement 248 is provided for creating a tight seal. Therefore, when the release valve 24 is triggered, a predetermined volume of compressed gas is vented into the loading mechanism 216, so that the projectile 202 contained within the internal cavity is propelled from the barrel 216.
Therefore, when the first and second bodies (218, 220) are configured in the first configuration the first end 242 of the barrel 214 seals against the first end 240 of the loading mechanism 216, whilst the second end 246 of the loading mechanism 216 seals against the release valve 24.
As is described in more detail below, when the slide of the device 200 is moved to the rearwards position, the barrel 214 is caused to move forward axially, slightly away from the first end 240 so that the shoulder arrangement 244 disengages and so that a first gap 250 is formed between the barrel 214 and the loading mechanism 216. Also, when the slide of the device 200 is moved to the rearwards position, the loading mechanism 216 slides axially forwards along the first and second pins (226, 228), so that the second end 246 of the loading mechanism 216 moves slightly away from the release valve 24 causing the second shoulder 248 to disengage, and so that a second gap 252 is formed between the loading mechanism 216 and the release valve 24.
The first and second gaps (250, 252) allows the first and second bodies (218, 220) to move to the second configuration without obstruction.
The first and second bodies (218, 220) are allowed to slide axially on the first and second pins (226, 228) respectively, between a rearward position wherein the second end 246 of the loading mechanism 216 seals against the discharge valve 24, and a forward position, wherein the second gap 252 is defined between the loading mechanism 216 and the discharge valve 24. A biasing means 254 (which may typically take the form of a first and second spring associated with the first and second bodies (218, 220) respectively, and which is best shown in
The device 200 is provided with a barrel displacement mechanism 258, which is provided for displacing the barrel 214 between forward and rearward axial positions. The barrel displacement mechanism 258 comprises an actuation member typically in the form of a pin 260 which extends from the slide of the device 200 (and which is fixed to the slide so that it moves with the slide). The pin 260 can therefore be displaced relative to the barrel 214, by displacing the slide. The pin 260 is arranged to interact with an actuation mechanism 262 which is arranged between the pin 260 and the barrel 214. Because of this interaction (and as more fully described below), when the slide is displaced rearwards (typically by the user of the device 200) the barrel is displaced to the forwards axial position, and when the slide is displaced forwards, the barrel is displaced to the rearwards axial position.
The actuation mechanism 262 comprises an actuation body 264 which is fixed to the body 12 of the device 200, such that the actuation body 264 can pivot about pivot point 266. The actuation mechanism 262 furthermore comprises a linking body 268 which is attached to the actuation body 264 via a pivot 270. The linking body 268 is furthermore pivotably attached, via a flange body 272, to the barrel 214. The flange body 272 is fixed to the barrel 214 such that no relative movement is allowed between the two. The linking body 268 is attached to the flange body 272 via a pivot 274. It will be understood that all of the pivots (266, 270 and 274) may comprise simple pins.
The actuation body 264 comprises a first actuation surface 276 and a second actuation surface 278.
The barrel 214 is biased towards the forwards axial position, by a biasing means 280, typically in the form of a spring, such as a wave spring (which is used due to spatial constraints). The wave spring 280 is located between the flange body 272 and a shoulder 282. The shoulder 282 and the pivot 266 cannot move relative to each other. The shoulder 282 is formed on a body 284 which defines a bore 286 through which the barrel 214 extends.
The barrel 214 can therefore be displaced axially within the bore 286. The shoulder 256 is also formed on the body 284.
When the barrel 214 is located in the rearward position, as is best shown in
When the slide is displaced to the rearward position, the pin 260 interacts with the first actuation surface 276 and causes the actuation body 264 to pivot upwards, as is indicated in
As the slide is displaced forwards (typically under spring bias), the pin 260 moves forward with the slide, until, as is shown in
The first and second gaps may be between 1 mm and 2 mm, and therefore, the barrel 214 may typically be displaced between 2 and 4 mm.
In an alternative embodiment (not shown), the arrangement may be such that the actuation member interacts with the first actuation surface of the actuation body when the slide moves towards the rearward axial position, thereby to cause the actuation body to pivot relative to body of the device, so that the barrel is pulled to the forward position by the link body, and such that the actuation member interacts with the second actuation surface of the actuation body when the slide moves towards the forward axial position, thereby to cause the actuation body to pivot relative to body of the device, to push the barrel to the rearward position via the link body.
It will be appreciated that any of the example barrel displacement mechanisms 140 described above in relation to the device 10 and the barrel 16 may be adapted to displace a barrel to a forward position rather than a rearward position when the trigger mechanism 26 is pulled or actuated by a user. It will therefore furthermore be appreciated that the device 200 may alternatively be fitted with such an adapted barrel displacement mechanism 140 which is actuated by the trigger mechanism 26 instead of the slide, thereby causing the barrel 214 to be displaced to the forward position. Similarly, the barrel displacement mechanism 258 may be adapted to be actuated by the trigger mechanism 26 instead of by the slide.
The opening 224 into the internal cavity 222 may have a cross-sectional dimension similar, but slightly larger to a diameter of the projectile 202, so that the projectile 202 may easily be received from the magazine 212 into the internal cavity 222. A length of the loading mechanism 216 exceeds a length of the projectile 202.
The first and second bodies (218, 220), first and second actuating formations (230, 232) and the actuating surface on the slide are all typically manufactured from a polymeric material, and may be formed by injection moulding. Alternatively, the first and second bodies (218, 220) may be manufactured from a metallic material such as stainless steel. The actuating formations (230, 232) and actuating surface on the slide may similarly be of a metallic material and may have relatively smooth or polished outer surfaces, to promote sliding or relative movement between these surfaces.
As described above, an uppermost projectile located in the magazine 212 is urged upwards by other projectiles or a follower, from below. It is therefore pressed against the first and second bodies (218, 220), which will initially be in the first configuration. As the slide is moved to the rearwards position, the first and second bodies (218, 220) moves to the second configuration as described above, so that the opening 224 is formed. The uppermost projectile 202 is urged through the opening into the internal cavity 222. The projectile 202 only has to urged high enough into the internal cavity 222 so that when the first and second bodies (218, 220) starts moving back to the first configuration, the first and second bodies (218, 220) will contact a bottom half of the projectile 202.
As the slide is allowed to move to the forward position, the first and second bodies (218, 220) therefore returns to the first configuration, receiving the projectile 202 into the internal cavity 222. As the opening 224 closes, the first and second bodies (218, 220) urges the projectile immediately below the uppermost projectile 202 (which is now located within the internal cavity 222) down, back into the magazine 212.
Should the slide be moved backwards again, the projectile already within the loading mechanism 216 will prevent the following projectile to move into the loading mechanism 216, and again when the slide is allowed to move to the forwards position, the first and second bodies (218, 220) will urge the following projectile downwardly. In this way, and also since the projectiles are loaded directly from below and not through a rearward opening of the barrel, the loading mechanism 216 prevents more than one projectile 202 from being loaded into the barrel.
Furthermore, since the first and second bodies (218, 220) remains in the first configuration as long as the slide is in the forwards position, a projectile 202 located within the loading mechanism 216 (and therefore within the barrel 212) will not fall from the barrel 212 when the magazine 214 is removed from the grip 14.
It will again be understood that the second less lethal device 200 could take various forms other than that of a pistol, and may include such configurations as rifles and the like.
It will be understood that the loading mechanism 216 may be adapted for use with other less-lethal projectiles, and is not limited to use with the projectile 202.
It will be appreciated that each of the barrel displacement mechanisms 140 (irrespective of whether such a barrel displacement mechanism 140 is adapted to be used by the device 10 or the device 200, and irrespective of whether the barrel displacement mechanism 140 causes a barrel to be displaced to a forward or rearward position when actuated) may be adapted to be actuated by the slide of the respective device instead of the trigger mechanism 26.
It will be appreciated by those skilled in the art that the invention is not limited to the precise details as described herein and that many variations are possible without departing from the scope and spirit of the invention.
The description above is presented in the cause of providing what is believed to be the most useful and readily understandable description of the principles and conceptual aspects of the invention. In this regard, no attempt is made to show structural details of the invention in more detail than necessary for a fundamental understanding of the invention. The words used should therefore be interpreted as words of description rather than words of limitation.
Filing Document | Filing Date | Country | Kind |
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PCT/IB2019/059107 | 10/24/2019 | WO | 00 |
Number | Date | Country | |
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62749897 | Oct 2018 | US |