Abstract: A gas generator includes a cup where a gas generating agent is accommodated and a holder. The holder includes a first recessed portion and an annular groove provided in an end surface on a side facing the cup, a second recessed portion provided in an end surface on an opposite side, and a partition between the first and second recessed portions. A bottom surface of the first recessed portion includes a first and second bottom surface located on a side of the second recessed portion. The gas generator satisfies A<B<C, where A represents a distance from the second bottom surface to a bottom surface of the second recessed portion, B represents a distance from the first bottom surface to the bottom surface of the second recessed portion, and C represents a distance from the bottom surface of the second recessed portion to the annular groove.

Abstract: An embodiment of a perforating gun system deployable in a wellbore extending through a subterranean earthen formation includes a tandem sub including a sub housing and a signal pod receivable in the sub housing, wherein the signal pod includes a detonator and a receptacle; and a perforating gun including a charge carrier configured to receive one or more shaped charges, the charge carrier including a detonator cord housing configured to receive a terminal end of a detonator cord, and wherein the detonator cord housing is receivable in the receptacle of the signal pod to ballistically couple the detonator cord with the detonator.

Abstract: A firearm includes a fixed magnet and a movable magnet, wherein at least one of the fixed magnet and the movable magnet is an electromagnet. A control unit can charge the electromagnet causing the movable magnet to move towards the fixed magnet with high speed under electromagnetic forces. A firing pin is coupled with a movable magnet. The movable magnet moving at high speed causes the firing pin to strike a bullet loaded in the firearm resulting in the firing of the bullet.

Abstract: A rifle having a straight pull bolt assembly with a bolt handle that extends outward and downward from a bolt operation mechanism. The bolt handle rotatable a limited rotational range forward and rearwardly about a horizontal axis for operating the mechanism. The handle can be reconfigured to position its rotational range about the horizontal axis and can be attached to the mechanism at either left or right sides to provide for ambidextrous operation. Bolt heads, lower frame members with magazine wells, and barrel assemblies can be readily swapped to change ammunition. The bolt assembly can be unlocked by firing or by a thumb push button release at the backside of the mechanism. A bolt removal release mechanism is forward of the thumb pushbutton and an ejector includes a spring bias and cam follower surface to reliably eject casings.

Abstract: A dart launcher and dart magazine for alleviating improper dart placement concerns with a forward matching dart profile. The dart magazine is short and does not extend into the launch chamber of the launcher. The magazine has an open top with a dart restrainer that is moved when the magazine is inserted into the launcher causing an upper-most dart in the magazine to be biased out of the magazine and into the launch chamber. The launcher includes a dart placement structure in the launch chamber to locate the upper-most dart. The dart placement structure may be shaped as an arm allowing positioning of each dart also free of the magazine while facilitating automatic firing of the darts from the magazine.

Abstract: A method for simultaneous blasting of projectiles includes i.) calculating the position of the target, ii.) estimating the target's position, iii.) firing a first projectile at the target, iv.) firing a second projectile at the target, v.) braking the first projectile with a braking device arranged in the projectile, and vi.) detonating the projectiles in a coordinated fashion based on an initiation signal. A fire-control system for directing fire against a target comprising at least one sensor, in order to measure the position of the target as a function of time, and a combat system including a firing device are also provided.

Abstract: A firearm accessory connector includes a mount assembly to connect the firearm accessory connector to a firearm; a swivel assembly coupled to the mount assembly and providing for rotation around the mount assembly, the swivel assembly having a swivel sleeve coupled to the mount assembly and to rotate about the mount assembly; and a flexible member coupled to the swivel sleeve and extending from the swivel sleeve, the flexible member to attach to an accessory such that the accessory is coupled to the firearm.

Abstract: A scope protector for a weapon scope includes a scope adapter defining a cylindrical bore, the scope adapter having a first end that is configured to connect to an end of the weapon scope to align the cylindrical bore of the scope adapter with a lens of the weapon scope. The scope protector may further include a lens cover defining a cylindrical bore, the lens cover being configured to connect to a second end of the scope adapter opposite the first end (and/or to an intervening diffuser adapter housing a diffuser such as a honeycomb diffuser) to align the cylindrical bore of the lens cover with the lens of the weapon scope. The scope protector may further include one or more transparent polymer films housed within the lens cover so as to cover the cylindrical bore thereof.

Abstract: Stocks for a rifle or other firearm transition between a deployed configuration and a stowed configuration. In the stowed configuration, a buttstock of the stock is positioned to at least partially surround the scope within an internal volume of the buttstock. The buttstock covers at least a portion of the rifle scope without needing to contact the scope, and is rigid enough to protect the scope from impacts. When the firearm is ready to be used, the stock may be deployed to reveal the scope and the stock may be positioned to serve in a conventional manner for the user to rest their shoulder against. To fold or unfold the stock, a grip and buttstock of the stock are rotated with respect to a forestock of the stock. Systems include both such a folding stock and a rifle or other firearm to which the stock is coupled.

Abstract: An automatic uncoupled charging device includes a control system, a power system, a charging system, and an auxiliary system. The control system is equipped with a programmable circuit to control a screw speed. Explosives are charged into a container through manual handling or flowing from a mixed explosive vehicle. Explosive bags with different diameters are installed at the bottom of a discharge port. The device is set to start with one click, and the screw drives the explosive into the bag, achieving uncoupled charging. An automatic uncoupled charging method applying to the automatic uncoupled charging device not only reduces labor intensity, achieves fast charging, improves labor efficiency, but also achieves the goal of “mechanization reducing personnel”, further advancing towards the essential safety of blasting construction.

Abstract: A large-calibre firearm including a breech assembly including a breech block rigidly connected to a firearm barrel, a breech support movable in axial translation relative to the breech block and coupled to a breech head, the assembly further includes a plurality of loading chambers, a mechanism for moving the chambers, configured to support the chambers and successively place one of the chambers in a firing position, and at least one other chamber in a supply position, in which the at least one chamber is able to receive ammunition via its rear end, and a locking mechanism configured to move the breech head and the chamber placed in the firing position between an unlocked position and a locked position, in which the chamber is closed off at its rear end by the breech head and opens out at its front end into the firearm barrel.

Abstract: A perforating gun system includes a cylindrical outer housing, a charge carrier assembly receivable in the outer housing, wherein the charge carrier assembly includes a charge carrier defining an interior configured to at least partially receive one or more shaped charges, a first endplate coupled to a first end of the charge carrier, and a second endplate coupled to a second end of the charge carrier, and wherein the first endplate defines a switch receptacle for at least partially receiving an electrical switch and a detonator receptacle for receiving a detonator such that the detonator is configured to detonate the one or more shaped charges in response to receiving a firing signal from the electrical switch.

Abstract: A firearm suppressor cover (1), comprising a thermal insulator (3) which is, in use, configured to surround a firearm suppressor (4); and a curved spring (2) which is located at a first end of the cover and pre-bent into a shape of a ring, which is open at one point, the spring (2) being, in use, configured to tighten around the firearm suppressor (4) in order to tighten said thermal insulator (3) around the firearm suppressor (4) and to prevent the longitudinal movement of said thermal insulator (3) in relation to said suppressor (4).

Abstract: Igniter assemblies for use with setting tools are disclosed. The igniter assemblies have an electronic heating element disposed adjacent to an energetic material within a setting tool. In some embodiments, the electronic heating element is a resistor or a PCB mounted resistor. Electrical connections are attached to the heating element to provide electrical current to activate the heating element. In some instances, the electrical heating element is disposed onto an insulator cap that is coupled to a pressure block attached to the setting tool, and in some instances the electronic heating element is attached to a non-explosive portion and the energetic material is disposed within an explosive portion. When the non-explosive portion and the explosive portion are assembled, the electronic heating element is adjacent to the energetic material. Other assemblies are described.

Abstract: An apparatus and methods are provided for a gunsight and sighting system for use on firearms. The gunsight and sighting system comprises a mount portion coupled with a hood portion. A projection window with a collimated image overlay is secured to the mount portion by the hood portion. A front sight dot is forward of the projection window, while two rear sight dots are rearward of the mount portion. The sight dots may be illuminated by any of various desirable colors to enhance visibility in various lighting conditions. Light sensors disposed at the front of the mount portion detect ambient light and/or light in a target area and accordingly adjust the illumination of the sight dots. The light sensors may be disposed in asymmetric locations of the mounting portion to overcome interference due to light arriving at angles other than in front of the gunsight and sighting system.

Abstract: In a MEFP warhead detonation of the main charge is controlled to provide elevated pressure at multiple locations on the back surface of the liner to cut the liner and to form and propel forward a plurality of EFPs. An initiation system is configured for multi-point initiation of a plurality of booster charges to detonate the main charge to produce a plurality of detonation waves that constructively interfere at multiple locations on the back surface of the liner to form pressure hot spots that cut the liner and to form and propel forward a plurality of EFPs. In different embodiments, the elevated pressures are between 110% and 200% of the detonation pressure at the front of an individual detonation wave. The liner may, for example, be a flat plate or a include a plurality of dimples in which case the boosters are aligned to the center of the dimples.

Abstract: A warhead includes a casing having a periphery wall that extends along a central axis from a forward end of the casing to a rearward end of the casing. The casing defines a cavity configured to contain an explosive material, wherein the forward end of the casing includes a first thread pattern configured to engage a guidance system casing, and the rearward end of the casing includes a second thread pattern configured to engage a propulsion system casing. A first row of fragments is arranged along a first section of the periphery wall of the casing. A plurality of second rows of fragments is rearward of the first row of fragments and arranged along a second section of the periphery wall of the casing. In an example, each of the first and second sections tapers inward towards the central axis as it extends toward the forward end of the casing.

Abstract: Adjustable leg fastening arrangement (200) for a bipod (1) for a rifle (2), the adjustable leg fastening arrangement comprising a first pivoting part (210), arranged to be fastened to a leg part (100); a second pivoting part (220), arranged to be fastened to a bipod main part (300) or to the rifle, the second pivoting part being pivotable in relation to the first pivoting part. The invention is characterised in that the adjustable leg fastening arrangement further comprises a conical recess (211) and a conical part (221), an outer surface of the conical part being arranged to engage in a friction engagement with an inner surface of said conical recess, the conical recess and the conical part each being arranged to be rotationally-fixedly attached to a respective different one of said first pivoting part and said second pivoting part; and a screw engagement means (201) arranged to press the conical part axially into and against the conical recess, thereby increasing a friction of said friction engagement.

Abstract: Vacuum insulation layers are provided for one or more components of a launch system for a plurality of missiles. The vacuum insulation layers may be integrated into the walls of the components or provided in inserts attached to the components. A medium or high vacuum is pulled on a sealed void space in the walls or the insert. The vacuum insulation layer provides a thermal conductivity (Tcond_vac) of less than one-third of a thermal conductivity of air (Tcond_air). The vacuum insulation layer delays desensitization or inhibits premature reaction of the energetic materials inside the missiles due to high external temperatures. The insulation layers allow for more compact and dense configurations of the launch system and missiles.

Abstract: The invention relates to a rammer (1) for positioning an artillery shell, the rammer (1) comprising a stretcher (2) intended to receive the shell and guide it in translation, the rammer (1) being characterized in that it comprises a pusher (4) which can be driven in a reciprocating movement along the stretcher (2), reciprocating movement which is provided by a pair of closed flexible links (6) arranged on either side of the pusher (4), each link (6) connecting a drive wheel (6b) and a free wheel (6a), the pusher (4) having a bearing surface intended to correspond with a rear face of the shell in order to push it.