Apr 7, 2026
The invention shows a gas generator comprising a pressure chamber ( 22 ) filled with compressed gas which is sealed against an environment of the gas generator ( 10 ) by a membrane ( 16 ), a solid propellant ( 30 ) received in the pressure chamber ( 22 ), and an igniter unit ( 14 ) adjacent to the pressure chamber ( 22 ). The solid propellant ( 30 ) is surrounded by a cage-type open fuel holder ( 32 ) receiving the same which protrudes into the pressure chamber ( 22 ) and is directly adjacent to the igniter unit ( 14 ). Accordingly, the pressure chamber ( 22 ) is free from solid propellant outside the fuel holder ( 32 ).
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Apr 7, 2026
A manufacturing method of an intelligent anti-terrorism protective door comprises the following steps: S1, making front and rear door panels; S2, cutting the composite door core panel materials; S3, making protective door frame; S4, assembling bulletproof and explosion-proof armored composite door core panel; S5, making the door frame; S6, decorating the surface of the protective door; S7, overall assembly; S8, installing the lock; S9, packaging the protective door. The manufacturing method is simple and easy to implement, with strict control over every aspect from raw materials, production processes, to quality control during the manufacturing process, ensuring the product quality. This not only makes the product fire-proof and anti-theft, but also has explosion-proof and bulletproof properties, effectively preventing explosions and bullet attacks, greatly improving the security of the protective door.
Apr 7, 2026
Provided is a thermal management apparatus for use with a vehicle, the apparatus comprising a plurality of phase change heat exchange units thermally coupled with a vehicle system that requires thermal management, the plurality of phase change heat exchange units operable to remove heat from the vehicle system.
Apr 7, 2026
Braking mechanism for a gun includes a fork whose arms are abutted by supporting pins that abut on brake rollers. A breech that has vertical engagement grooves. Spring-loaded pins with compression springs are arranged against supporting pins. The body of the fork is terminated by a tapered tongue extending into a cavity which follows the fork. Behind the tongue a rod is arranged, which passes into the cavity in a sleeve. The sleeve is provided at one end with an end rod, which is provided at its face with a cylindrical ending arranged eccentrically below its center. The supporting pin is provided with a vertical elongated groove to accommodate the safety pin. In front of the trigger a locking lever of the control arm is placed. At the end is the control arm provided with a transverse beam, which is accommodated above the ending of the end rod.
Apr 7, 2026
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.
Apr 7, 2026
An apparatus and methods are provided for a front plate having a diverging central bore for firearm sound suppressors that improves noise and flash characteristics during firing a weapon. The central bore is disposed between a back surface and a front surface of the front plate. An untapered portion of the central bore extends from the back surface to a diverging portion that opens toward the front surface. The diverging portion includes a curvature profile configured to allow for more controlled expansion of high-pressure propellant gases exiting of the suppressor through the central bore. The curvature profile provides an included angle of the central bore that decreases secondary flash events accompanying the expulsion of propellant gases accompanying a fired bullet exiting the suppressor through the central bore. The curvature profile exhibits a cross-sectional area of the central bore that is proportional to a distance along the diverging portion.
Apr 7, 2026
A gun muzzle sound suppressor including a plurality of segments, wherein each segment among the plurality of segments including a cylindrical housing having an inner surface and an outer surface, wherein the each segment further includes a conical baffle fixedly attached to the inner surface of the each segment's cylindrical housing, wherein the each segment further includes a plurality of vanes fixedly attached to the outer surface of the each segment's cylindrical housing; an outer housing having an inner surface, wherein the outer housing is fitted for sliding receipts of the segments, wherein upon the receipts of the segments, the vanes contact the outer housing's inner surface; and a pair of rings fixedly attached to the outer housing, one the rings among the pair of rings being positioned muzzlewardly from a muzzleward-most segment among the plurality of segments, the other ring among the plurality of rings being positioned breachwardly from a breachward-most segment among the plurality of segments.
Apr 7, 2026
A firearm forearm assembly is provided. Generally included is a forearm retainer that is a flexible component installed in the forearm, which is then momentarily deflected to admit each action bar. Once the forearm assembly is installed in the firearm, the firearm's magazine tube is introduced and prevents further deflection of the retainer, thus locking the forearm assembly together during use. As a result, the forearm assembly is easily disassembled by the user without the use of tools by deflection of the retainer and removal of the action bars. But at the same time, the integrity of the firearm is preserved during operation.
Apr 7, 2026
A system and method are provided for correcting targeting of indirect fire, including: acquiring values for a set of firing conditions, for each of the firing conditions determining statistical parameters of a covariance matrix of the firing conditions, including estimates of unit effects, standard deviations, and error correlations between registration and fire-for-effect (FFE) firing condition errors, wherein at least one correlation is less than one and greater than zero, acquiring a registration miss vector, generating from the statistical parameters a conditional correction matrix; and multiplying the conditional correction matrix by the registration miss vector to calculate a correction vector for FFE targeting.
Apr 7, 2026
Provided herein are systems and methods for shooting simulation of a target with a projectile. More particularly, the invention relates to virtual reality optical projection systems to monitor and simulate shooting.
Apr 7, 2026
A soft body armor arrangement has a plurality of layers of soft ballistic material stacked on one another, each layer comprising a plurality of sub-layers of ballistic material. Each of the layers has a respective seam line attaching two or more respective sections of the layer. The sizes of the section are varied so that the resultant seam lines of adjacent layers are offset and spaced apart from one another, but the overall size and shape of each layer is the same. This avoids stacking and bunching of the seam lines which can cause rigidity and discomfort.
Apr 7, 2026
The present disclosure relates to a shaped charge liner. The shaped charge liner includes a first liner portion formed a first material. The first liner portion has an apex and a skirt section that define an interior volume of the first liner portion. The shaped charge liner also includes a second liner portion formed of a second material. The second liner portion is coupled to the first liner portion such that the second liner portion is an edge of the interior volume.
Apr 7, 2026
The header of an EED is redesigned to increase stiction forces to better hold the main charge throughout deflagration. The header includes a main charge holder, integrally formed or as a discrete component, that has internal structure that is press fit to a complementary outer surface of the main charge. The contact area between the internal structure and the main charge being greater than the contact area between a cylinder that circumscribes the internal structure (the uniform cylindrical shape of a typical EED contact area of π*D*L) to increase stiction forces between the main charge holder and the main charge. For a given diameter and length, the inclusion of the internal structure will reduce the mass of the main charge.
Apr 7, 2026
A gas generator includes: an ignition device including an igniter, an igniter holding portion having a tubular shape and being configured to hold the igniter and a fixing portion made of resin and being configured to fix the igniter to the igniter holding portion; and a case having a bottomed tubular shape and being configured to accommodate a gas generating agent which combusts by actuation of the ignition device, the case being made of resin and including a side wall portion with a base end side being connected to the fixing portion, and a closing end portion configured to close a tip end side. The case includes an inclined surface extending obliquely with respect to an axial direction of the case on the tip end side, and a fragile part formed at an edge portion excluding at least a base end portion of the inclined surface.
Apr 7, 2026
An arrowhead, in accordance with the present invention, includes an apex, and a first pair of blades fixed about an axis of the arrowhead, each of the preferably coplanar blades containing an edge defining a single-bevel edge that transitions to a double-bevel edge along the periphery of the arrowhead. The arrowhead may further contain a smaller second pair of blades fixed about the axis, each of the second pair of blades spaced apart from a primary blade, each of the second pair of blades extending along and fixed to the arrowhead along the axis.
Apr 7, 2026
The safety systems for commercial blasting operations include wireless transmitter system(s) configured to send command signals wirelessly to wireless devices that are configured for wireless electronic blasting (web). The system also includes disable antenna(s) that define deactivation zone(s): vehicle/personnel presence detector system(s) including detectors that define detection zone(s), and/or RFID scanner system(s) with reader antennas that defined scanner zone(s); and a safety control system in electronic communication with the wireless transmitter system(s), and the vehicle/personnel presence detector systems and/or the RFID scanner systems, wherein the safety control system is configured to control the wireless transmitter systems to send wireless disable command(s) to disable the wireless devices that are within the deactivation zones, and/or to control alarm system(s) to generate alarms, in response to a vehicle/person being detected in the detection zones and/or a wireless device being detected in the scanner zones.
Apr 7, 2026
A diffractive optic reflex sight (DORS) is provided for aiming devices in which a virtual image, such as a reticle, is produced and appears in the distance of a user's view when looking through the reflex sight. A light source illuminates a diffractive optical element (DOE) that includes a modulation pattern that generates a patterned illuminations corresponding with the virtual image. A reflective image combiner then reflects the patterned illumination so that the virtual image appears in the distance of the viewer's view. The DORS optical design system is mechanically and optically stable for precision aiming across a range of environmental conditions and in different use scenarios or applications including use in rapidly changing temperatures, varying light conditions, and a wide range of user proficiencies. The DORS optical design system is a readily manufacturable aiming and sighting device for a wide range of applications from handguns to astronomical telescopes.
Apr 7, 2026
Systems, devices, and methods for identifying a target aerial vehicle, deploying an interceptor aerial vehicle comprising at least one effector, maneuvering the interceptor aerial vehicle to a position to engage a target aerial vehicle, deploying the at least one effector to intercept the target aerial vehicle, and confirming that the target aerial vehicle has been intercepted.
Apr 7, 2026
