2715 results about "Gun barrel" patented technology

A firearm or firearm retrofit assembly may include a compensation assembly to receive gas expelled from a muzzle of a barrel or an egress in a length of the barrel. The compensation assembly may include one or more gas flow-directing sections to tune the flow of gas through the compensation assembly, which may reduce recoil. Other embodiments may be disclosed and / or claimed.

Present embodiments relate to a modular firearm. More specifically but without limitation, present embodiments relate to a modular firearm, for example semi-automatic rifle, with various modules that provide differing functions to a semi-automatic or automatic rifle. Some of the functions include, but are not limited to, connector for ambidextrous stock folding, interchangeable magwell for changing of firearm caliber, a barrel module with evacuation chamber, and ambidextrous charging handle.

A firearm handguard attachment device comprises a barrel nut having a forward end, a rearward end, and a circumferential recess between the forward end and the rearward end, the recess having an uninterrupted surface and defining a forward shoulder and a rearward shoulder, a handguard having a forward end and a rearward end and configured to be slid onto the barrel nut, the handguard having a transversely extending opening in a lower portion thereof, the opening having a seat at each opposite end, a pair of wedges, one wedge of the pair being installed in one of the seats and the other wedge of the pair being installed in the other seat, and at least one fastener for drawing the wedges toward one another. The wedges are configured to engage the uninterrupted surface of the recess to prevent axial translation of the handguard relative to the barrel nut and to prevent axial rotation of the handguard relative to the barrel nut.

A firearm is provided that comprises a barrel, a magazine tube below the barrel, and a handguard with first and second portions. A clamp between the handguard portions has a main body with deformable lugs and a fastener. The handguard's first portion features an arcuate surface for the barrel and a bore for the magazine tube. The lugs move inward and downward, securing the handguard. The clamp is positioned within a recess between the handguard portions. Fasteners are accessible through apertures in the handguard. The clamp contacts both the magazine tube and the barrel when tightened. The clamp includes a main body and deformable lugs, with a fastener to secure the handguard. The lugs are deformable, made of various materials, and designed to bend upon tightening. The method involves positioning and tightening the clamp to deform the lugs and secure the handguard.

A muzzle device with an inner core coupled to the barrel, and an outer sleeve coupled to the inner core. The inner core is sized so that it has a smaller outside diameter than an inside diameter of a gas block fitted to the firearm to which the inner core is to be attached.

A system for installing a first muzzle accessory on a barrel of a firearm having a second muzzle accessory mounted thereto comprises an adapter configured to attach to the second muzzle accessory and a first muzzle accessory configured to attach to the adapter. The adapter serves to temporarily deactivate the second muzzle accessory when the adapter is attached to the second muzzle accessory.

A firearm accessory mounting and protection system including integrated channels machined into the handguard or receiver of a firearm that allows wires / cables to be concealed and protected under removable covers which slide into the integrated channels. These channels can also be used to mount and accommodate optional accessories or mounting surfaces. A firearm free-float handguard mounting system including a barrel nut and cam-lock mount with two machined cam-lock bolts that ride on the cam-lock nut and move up and down with a forty-five degree motion while contained in the handguards housing where the bolts sit in channels machined into the barrel nut allowing for the handguard to be easily installed or removed for cleaning, firearm maintenance, servicing, etc.

A gun tube for a downhole perforating gun assembly includes a body having a cavity and one or more weights in the cavity. Gravity acts on the weights, which causes the tube body to rotate around its longitudinal axis so the weights are adjacent the lower part of the wellbore in which the gun assembly is positioned when oriented horizontally. This position shape charges in the gun tube in a desired position prior to the shape charges being fired. The gun tube may also include one or more end connectors with electrical contacts having a first, extended position, and a second, contracted position, and / or end connectors that can be assembled by hand without the use of tools.

An improved AR platform firearm includes modular brass deflectors and brass catches; sleeved takedown and pivot pinholes; a cam latch device for a secure upper / lower receiver connection; a two-piece upper receiver; a taper-fit barrel system; a barrel alignment system using a barrel alignment washer; a charging handle that positively engages with the bolt carrier; a charging handle retention system using a spring detent; a bolt carrier with rear wall to absorb shear force on the gas key or anvil; a leak-proof gas system using a straight gas tube, ferrule and threaded connection with the gas block; a gas block stop notch that mates with a gas block key; a gas block jam nut for holding the gas block in place; an interchangeable gas system; an expansion chamber; a handguard with adjustable weights; a handguard lock-up mechanism; a handguard extender; and a sloped Picatinny rail for extending scope utilization.

A bushing / compensator device for a firearm is provided that includes a compensator member having a first aperture having an axis that is coaxial with the axis of the barrel. A second aperture has an axis that is coaxial with the axis of the guide rod when the device is mounted on the slide. A quarter turn bayonet mount is disposed at a rear end of the first aperture that mates with a bayonet mount aperture in the slide. When the bayonet mount is locked, the axis of the second aperture is aligned with the axis of the guide rod of the pistol, and when the bayonet mount is unlocked, the device is removable from the slide. A button assembly is retained in the second aperture and includes a head at one end and a fastener at the other. The rod is slidable from a first position wherein the head is adjacent to the front end of the second aperture, to a second position wherein the second end of the rod depresses the recoil spring plug. A spring biases the rod to the first position.

The invention belongs to the technical field of smoke dust and flue gas sampling, and particularly relates to a smoke dust and flue gas sampling gun with a convenient-to-assemble and disassemble gun feeding support, the smoke dust and flue gas sampling gun comprises a sampling mechanism, the sampling mechanism comprises a sampling gun main body, a gun barrel and a smoke dust and flue gas sensor, the gun barrel is detachably sleeved with a centering fixing mechanism, a plugging mechanism and a pushing mechanism, the plugging mechanism penetrates through the centering and fixing mechanism and is fixedly connected with the centering and fixing mechanism, the pushing mechanism is fixedly connected with the plugging mechanism, and the centering and fixing mechanism is used for being fixedly connected with a flange plate of a flue and enabling the plugging mechanism and a sampling pipeline to be coaxially arranged. The device can be fixed on flange plates of different flues through the centering and fixing mechanism, the flange plates and the plugging mechanism can be always in a coaxial state, then sampling mechanisms of gun barrels with different pipe diameters can be pushed to move through the pushing mechanism, the position of a smoke dust and flue gas sensor in the flues can be accurately adjusted, and the sampling accuracy of the smoke dust and flue gas sensor is improved. And long-time manual supporting is not needed.

A toy rounds blaster apparatus launching multiple projectile rounds with an energy source including a single launch spring for moving one or more pistons within one or more cylinders. A pressure distributor couples each of the one or more cylinders forward the one or more pistons, with an alignment system receiving a collection of the projectile rounds, for aligning individual projectile rounds between pressure distributor and the at least one barrel, with the pressure distributor coupling each of the one or more cylinders with a respective one of the individual projectile rounds. An actuator is linked with the energy source for causing the single launch spring of the energy source to move the one or more pistons and launch the projectile rounds.

The utility model discloses a rocket type catching net launching device which comprises gun barrels, gas bombs, a percussion mechanism, a catching net, a cartridge receiver and a folding telescopic rod, the gas bombs are arranged in the corresponding gun barrels, the percussion mechanism is arranged at the tail ends of the gun barrels, the catching net is connected with the gas bombs, and a fixing part is fixedly installed at the front end of an inner cavity of the cartridge receiver. The tail end of the gun barrel is detachably installed on the front side of the fixing component, and the folding telescopic rod is arranged at the front end of the gun barrel. The high-pressure gas cylinder is adopted as launching power, compared with power sources such as ammunition and fuel, higher safety is achieved, materials are easy to obtain, cost is lower, the unfolding angle of the gun barrel can be freely adjusted according to actual requirements, the larger the unfolding angle is, the higher the unfolding speed of the catching net is, and the closer the flying distance is. The method is suitable for close-range combat; otherwise, the smaller the unfolding angle is, the slower the unfolding speed of the catching net is, the farther the flying distance is, and the catching net is suitable for long-distance combat.

A handguard assembly for a firearm includes an outer member disposed forward of an upper receiver of the firearm where, a barrel nut disposed within the rear cavity, and at least one alignment member. The outer member includes a rear cavity and a threaded portion. The at least one alignment member contacts both the outer member and the upper receiver for alignment.

A firearm suppressor adapter may include an adapter body and a flash hider coupled to the adapter body. The adapter body may include first threads configured to removably couple the adapter body to a firearm suppressor, and second threads configured to removably couple the adapter body to a firearm barrel. The flash hider may be configured to be received at least partially within an internal chamber of the firearm suppressor, The flash hider may include a plurality of prongs and a plurality of cuts, with each of the cuts being defined between a respective pair of the prongs.

A muzzle accessory for coupling to a firearm barrel, the firearm barrel including a chamber for receiving a firearm round, a firing tube extending distally from the chamber to a distal end of the firearm barrel, the muzzle accessory can comprise a main body having a proximal end, a distal end, a through-channel extending longitudinally between the proximal end and the distal end, and a keyed receptacle within the through-channel; and a lock coupled to the main body, the lock being positionable into an unlocked position to permit insertion of the distal end of the firearm barrel within the through-channel of the main body, the lock being further positionable into a locked position to prevent removal of the distal end of the firearm barrel from the main body after the firearm barrel is inserted into the through-channel.

An automatic circulation shooting mechanism includes a gun body assembly, a gun barrel assembly, a bolt assembly, a recoil spring assembly, a triggering assembly, and a cartridge feeding assembly. Regarding the gun body assembly, a barrel fixing cap can separate from a barrel frame, so the gun barrel assembly mounted in the barrel frame can be replaced. The gun barrel assembly includes two barrel spring fixing seats disposed on a barrel, a barrel spring therebetween and a barrel extension. The barrel extension and a breech bolt of the bolt assembly are engaged for locking while shooting to allow the barrel and the breech bolt to recoil together by a linear freedom motion and affect the barrel spring, a bolt spring of the bolt assembly, and the recoil spring assembly for absorbing, storing, and releasing energy, thereby buffering recoil force of the shooting efficiently and attaining an automatic circulation shooting effect.

A recoil operated gun or firearm utilizes a tapered guide face on a barrel guide and / or a tapered barrel face on a barrel of the gun to realign or zero the barrel relative to a sight device (e.g., optic or iron signs) mounted on the slide or forend supporting the barrel guide.

The invention discloses a double-injection rubber-coated product assembled in a super-thick plastic part cavity structure mold and a production process of the double-injection rubber-coated product. A molten plastic material is injected into a first injection mold cavity through a first gun barrel of a double-injection injection molding machine to form a first injection molding part and a second injection molding part which are integrated; then the six-axis robot is controlled to drive the part taking and mounting tool to move to grab the insert and fix the insert to the second injection molding part, and at the moment, a closed assembly part with a cavity structure is formed between the second injection molding part and the insert; finally, a molten plastic material is injected to the outer surface of the assembly part of the second injection mold through a second gun barrel of the double-injection injection molding machine to form a third injection molding part; according to the technology, the overall weight of a solid structure product can be greatly reduced, the material use is reduced, the material cost is reduced, the product cooling time is shortened through the design of the cavity structure, the production efficiency is improved, and the product defects such as surface shrinkage marks and internal irregular cavities caused by excessive shrinkage of a plastic material in the cooling and curing process are thoroughly eradicated.

The present invention relates to a field gun with wheel carriage, specifically to a wheel carriage with regenerative braking system as part of the recoil system A field gun, comprising: i) an elevating mass comprising:an ordnance for firing a projectile, the ordnance comprising a barrel defining a barrel axis and having a muzzle towards the front end of the howitzer and a breech assembly at the rear end of the barrel; anda cradle for holding the ordnance at a traverse and an elevation; andat least one co-operative engagement means, for linking said cradle to a wheeled carriage, ii) said wheeled carriage comprisingat least one wheel:a rechargeable electric storage device; anda regenerative braking system comprising:a brake control configured for applying a braking force to said at least one wheel in response to movement of the wheeled carriage by a recoil force from the firing of the projectile from the gun barrel.

A firearm with ambidextrous bolt release mechanism includes a barrel and a bolt slideably mounted in the receiver for axial movement between forward closed breech position in battery with the barrel and a rearward open breech position. A recoil spring biases the bolt forward. A side-mounted bolt catch lever is configured and operable to selectively hold the bolt in the open breech position, and disengage the bolt to reclose the breech when manually actuated. A transversely movable actuator plunger allows a user to release the bolt from the side of the firearm opposite the bolt catch lever side. The plunger comprises an inclined camming surface which slideably engages a mating inclined camming ramp on the lever. Wedging action applied to the bolt catch lever by the plunger rotates the lever about its pivot axis to disengage and release the bolt.

A free-floating handguard for mounting onto a firearm includes a tubular polymer-based handguard body allowing passage of a barrel therethrough. The handguard body has a free-floating muzzle end and a clamping end engaging a barrel nut that secures the barrel to the firearm. A downwardly extending lobe is formed on the handguard body proximate the clamping end. The handguard body may further include either or both of a first metal insert and a second metal insert. The first metal insert may be embedded within a bottom wall of the downwardly extending lobe and releasably couple with a mounting feature on a firearm sling. The second metal insert may be embedded within the downwardly extending lobe and defines a threaded bore for receiving a threaded fastener therein. The threaded fastener and second metal insert may clamp the clamping end on the barrel nut to secure the handguard body on the firearm.

The invention belongs to the field of unmanned aerial vehicle safety, and particularly relates to an unmanned aerial vehicle high-speed collision body safety evaluation test device, which comprises a collision protection cabin, a speed measurement device, a sabot separation mechanism, a special-shaped gun barrel, a rapid bomb loading device and a gas storage tank, the special-shaped gun barrel is cylindrical and horizontally arranged, the impact protection cabins are arranged on the outer side of the output end of the special-shaped gun barrel at intervals, and the speed measuring device is arranged between the impact protection cabins and the output end of the special-shaped gun barrel. The high-speed impact test of the unmanned aerial vehicle is realized by adopting the special-shaped gun barrel and the integrated sabot separation mechanism and adopting the 400mm large-diameter gas gun impact test device to accelerate the unmanned aerial vehicle to a specified speed, so that the reliability of a test result is ensured, and the test cost and the test difficulty are also remarkably reduced. Meanwhile, the method has wide applicability, can be used for the unmanned aerial vehicle, and is also suitable for impact damage evaluation of an object of 2 kg or above at the speed of 150 m / s.

A gun targeting system (10) comprising a chassis (200). A gun barrel (300) is mounted to the chassis (200) by a pivot mount (304). The system also comprises a chassis suspension system (400) comprising a plurality of wheel arms (402), each wheel arm (402) extending away from a different chassis mount (220) on the chassis (200) to a respective wheel (404), each wheel (404) being rotatably mounted on its respective wheel arm (402), each wheel (404) configured for engagement with a support surface (500). The gun targeting system (10) is operable to position the barrel (300) towards an orientation to target an object by pivoting one or more wheel arms (402) relative to the chassis (200) and / or by pivoting one or more wheels (404) relative to its respective wheel arm (402) and / or by rotating one or more wheels (404) relative to its respective wheel arm (402).

The invention is related with a new locked breech mechanism for firearms, mounted in the frame (21) which allows for shortening the distance between the barrel (2) axis and contact point of the grip (10). The Slide (7) / breech (16) and the barrel (2) locked together at the point of firing. The inertia pushes the slide (7) / breech (16) and the barrel (2) backwards together for a certain distance. The mechanism disengages after certain amount of travel. The breech block (6) and short stroke main spring (1) are located in the frame (21) of the firearm allowing for shortening the distance between the barrel (2) axis and contact point of the grip (10).

Steady-field coilgun methods and devices based on a steady-field coil(s). The fundamental operational basis is to leave the current running in the solenoid / coil during the operation of the gun or other projectile launcher, where the field must be built up only once-initially, when turning the gun or launcher on. Then firing involves loading a bullet or other projectile in the barrel and releasing it to be accelerated by the established magnetic field. To fire again, the system loads the next bullet into the barrel and releases it again to be accelerated by the same steady magnetic field. To stop the firing, simply prevent the next bullet from loading, or load it but do not release it in the barrel. To turn off the system, simply disconnect the DC voltage driving the current in the solenoid(s) / coil(s).

The utility model belongs to the field of mechanical automation, and particularly relates to a bird dispersing system based on a binocular camera. Comprising a main controller, a binocular camera assembly and a sound wave bird repelling cannon assembly, the sound wave bird repelling cannon assembly comprises a bird repelling cannon base, a two-dimensional electric rotary table, a bird repelling cannon base mounting plate, a control igniter, a connector air pipe and a cannon barrel. The two-dimensional electric turntable is mounted on the bird repelling cannon base, and a bird repelling cannon base mounting plate is arranged on the two-dimensional electric turntable; the bird repelling cannon base mounting plate is hinged to an armature on the outer wall of the cannon barrel; a connector gas pipe for injecting gas into the gun barrel is arranged on the outer wall of the gun barrel; a control igniter for detonating gas in the gun barrel is arranged at the tail end of the gun barrel; the multiple binocular camera assemblies are arranged around the sound wave bird repelling cannon assembly. Hardware equipment is simple in structure, and the equipment is adjusted according to actual needs and is convenient to install. Birds are repelled in a sound wave mode, and the birds are reasonably repelled.

An improved perforating gun is provided. The perforating gun includes a shaped charge positioning tube that is freely rotatable with respect to an outer gun barrel without the use of bearings. The perforating gun includes first and second contact housings coupled to opposing ends of the shaped charge positioning tube. Each contact housing includes an electrical connector plug that is rotatable within a socket opening of a corresponding tandem, such that the electrical connector plugs define an axis of rotation of the shaped charge positioning tube. An asymmetric weight provides a desired angular orientation of the shaped charge positioning tube when inclined from vertical. The perforating gun further includes a grounding collar fixedly attached to the shaped charge positioning tube, with a plurality of resilient fingers extending radially therefrom in sliding engagement with the outer gun barrel.

The invention belongs to the technical field of dust falling devices, and particularly relates to a dust falling device for building construction, which comprises a bottom frame, an adjusting assembly arranged in the bottom frame, a bracket fixedly mounted on the adjusting assembly, a gun barrel arranged in the bracket, a supporting shaft fixedly mounted on the gun barrel, and a first motor fixedly mounted on the bracket, a water tank is fixedly installed in the bottom frame, a conveying pump is fixedly installed in the water tank, and an atomization assembly is arranged on the gun barrel. According to the dust falling device for building construction, by arranging a flow dividing groove and a spray head, the spraying dust falling range is conveniently widened, when the spraying dust falling range is expanded, a second motor works to adjust the angle of a square plate through a connecting shaft, the position of the spray head can be adjusted, and a water pump works to extract liquid in a water tank; and after the extracted liquid is conveyed into the flow dividing groove, water mist is sprayed to the outside through the spray head, so that the destination of the spraying dust falling range is expanded, the dust falling efficiency is improved, and the working efficiency is improved.

A combustible propellant cartridge case for ammunition fired from a gun barrel is provided, comprising cellulose, nitrocellulose, MO3 particles, where M = Mo and / or W, and cationic surfactant, wherein the mean particle size d 50 The MO3 particle size is 0.5 - 2.0 µm, the maximum particle size d 100 the MO3 particle size is ≤ 20 µm, and the quotient of the average MO3 concentration in wt.% in a volume element of approximately 0.05 to 1.0 cm³ 3 (c VE ) at any point in the propellant cartridge case and the total MO3 concentration in wt.% (c ges ) in the propellant cartridge case C VE : c ges = 0.80 - 1.20.