Abstract: The present invention relates to a new type of speargun which uses a continuously-variable-transmission drive system for energy storage and transmission of motion of the ejection device (which may be a piston, a rubber element or a spring) to the spear. The continuously-variable-transmission drive system consists of a shaft (10), the winding drums (8-8.1-9) and the ropes (4), (11). In order to double, triple and quadruple the energy storage to the ejection device, the drive system consists of the respective number of shafts, winding drums and ropes.

Abstract: Wireless detonator systems present opportunities for controlled blasting of rock without the encumbrances of physical wired connections at the blast site. Disclosed herein are wireless detonator assemblies, which sense the state of environmental condition(s) of their immediate vicinity, and which are active to receive and/or process a command signal to FIRE only if the environmental condition(s) are deemed suitable or appropriate according to predetermined parameters. Also disclosed are improved methods of blasting involving such wireless detonator assemblies, as well as corresponding wireless electronic primers.

Abstract: An automatic or semi-automatic rifle. The rifle has a receiver and a bolt having a striking surface, the bolt enclosed within the receiver. A barrel has a bore, the barrel coupled to the receiver. An indirect gas operating system has a cylinder and a piston, the indirect gas operating system mounted with a mounting structure substantially independent of the barrel. The cylinder is in communication with the bore, and the piston is fitted to the cylinder and disposed for striking the striking surface and displacing the bolt assembly.

Abstract: A gas generator includes at least two functional subassemblies and at least two retention parts. The functional subassemblies each have an axis defining an axial direction and at least one outer dimension in a plane normal to the axial direction. The retention parts are each radially crimped for retaining one of the at least two functional subassemblies on the gas generator. The at least two retention parts are formed on the same part of the gas generator and the at least two functional subassemblies are positioned on the gas generator with a center distance of axes less than or equal to 1.5 times this outer dimension and that each retention part is radially crimped over at least 90% of its periphery.

Abstract: A power charge (12) for a downhole setting tool has a sleeve (14) which defines a housing. A propellant (16) is located in the sleeve (14) in solid form and defines a first end face (20). An igniter (32) is embedded into the propellant (16) first end face (20). The igniter (32) has a main body portion (52) with an end located adjacent to the first end face (20), and an annular-shaped protrusion (48) which extends laterally outward from the main body portion (52) and into the propellant (16). The annular-shaped protrusion (48) defines a shoulder (46) which engages the propellant (16) to retain the igniter (32) within the propellant (16) at the first end face (20) of the power charge (12). The sleeve (14) is formed of a combustible material which will burn when the propellant (16) is burned.

Abstract: An improved mounting device for enabling a user to quickly and securely attach and detach an accessory (e.g., a scope, light, bayonet, etc.) to a Magpul MLOK rail of a firearm. In a preferred embodiment of the present invention, the device comprises an upper portion, a lower portion, and at least one locking mechanism to enable a user to quickly removably attach the improved mounting device to an MLOK rail on a firearm. In a further preferred embodiment of the present invention, the device also comprises a side wedge and side wedge spring.

Abstract: A light emission assembly for weapon sights which provides a viewable illuminated aiming indicia of substantially fixed area and uniform brightness regardless of the ambient light conditions.

Abstract: Embodiments of the hingeable ogive projectile disclosed herein include a projectile comprising a nose portion comprising a plurality of slits, the plurality of slits being cut from an outer surface of the nose portion to a central cavity of the nose portion and an open space formed in a meplat at a distal end of the nose portion. The hingeable ogive projectile disclosed herein may be configured to switch from a non-deformed configuration during firing and a deformed configured upon impact with a target. Longitudinal compression of the nose portion causes the nose portion to expand radially and causes a plurality of petals to form from material in the nose portion between consecutive slits. Radial expansion and longitudinal compression of the nose portion cause buckling of a plurality of petals at a hinge point on each of the plurality of petals.

Abstract: A removable sighting device mount is disclosed having an elongate top member configured to removably receive a sighting system thereon, the elongate top member removably attachable to a firearm. The device has a first elongate arm having a longitudinal axis that is parallel to the elongate top member, the first elongate arm having an elongate tab configured to mate with a first slot disposed in a receiver of the firearm. The device also has a second elongate arm, disposed opposite the first elongate arm, having a longitudinal axis that is parallel to the elongate top member. The second elongate arm has an elongate tab configured to mate with a second slot disposed in the receiver of a firearm.

Abstract: A digital firearm sight comprising a housing and a plurality of cameras, motion sensors, lights, and laser sights. The digital firearm sight further comprises a removable secondary device having its own independent laser sight and light and motion sensor. The housing further comprises a touch-screen display so that the user can see what any of the cameras are capturing. The housing preferably has beveled edges and is 1.5 to 3.5 inches tall or long.

Abstract: Examples of the present disclosure are related to systems and methods for a palm firearm. More specifically, embodiments are directed towards a two shot firearm with a series of linkages and slide mechanisms to engage firing pins, which may reduce the size of the firearm while retaining the firearm's effectiveness.

Abstract: Aspects of a magazine for use with a repeating firearm are described. One unique aspect is that the magazine is fabricated completely from a translucent polymer, particularly a polyphenylsulfone (PPSU) and, preferably, an unreinforced PPSU that is highly resistant to mechanical, chemical, and thermal failures commonly affecting magazines. Another aspect of the magazine is the inclusion of a coupling system fully integrated into the housing that allows magazines to be securely joined together without the use of tools or additional components. A further aspect of the magazine is the easy release button design allowing the magazine to be disassembled by large or gloved fingers without need for a tool to depress the release button.

Abstract: A firearm including a barrel, receiver, indirect gas system and an adjustable gas block designed to interface with the indirect gas system is provided. Four indexable positions of adjustment are provided for on the adjustable gas block. Positions of adjustment are selected based on the use of a silencer, use of under-powered ammunition, the presence of un-burnt powder and debris in the host firearms operating system, or if the weapon is being fired under “ideal” circumstances. The provided gas block is designed to function with an indirect gas operating system. Excess gas from the operating system is not vented from the gas block thereby generating excess flash and sound. No tool is required to manipulate the adjustment mechanism of the gas.

Abstract: A rupture mechanism is integrated into a plastic casing used for low velocity projectile rounds. The casing incorporates a cylindrical wall having a top mouth end that fixedly receives a projectile to be launched, and a bottom base head at the bottom end. A low-pressure chamber is formed by a first interior space between the cylindrical wall and the bottom base head. A high-pressure chamber formed on the bottom base head extends into the first interior space. The high-pressure chamber is formed with a second interior space to receive an ammunition cartridge. A top portion of the high-pressure chamber has an integrated burst area wall with a thickness selectively formed based on a type of projectile fixed at the top mouth end. Detonation of propellant gas from the cartridge builds up pressure to rupture the integrated burst area wall with a delay time in rupturing the integrated burst area wall based on the thickness of the integrated burst area wall.

Abstract: A rifle apparatus and method wherein the rifle includes a replaceable, threaded, adjustable barrel assembly which is configured for quickly changing the barrel length of the rifle, converting the rifle for using a different caliber of ammunition, and/or accurately determining and quickly setting the headspace in the firing chamber of the weapon for firing the new ammunition. Further, the rifle apparatus preferably also includes a replaceable lower receiver with a well opening and a corresponding magazine retention and release assembly for receiving a magazine clip for the caliber of ammunition fired by the replaceable barrel.

Abstract: Described herein is a munition to be exploded in the air at a position above an intended target. The munition includes an explosive, a matrix of fragmentation material, a body part with a convex shaped support element and a detonator. The layered structure of the munition is such that when detonated, a directional explosion code of fragmentation material is formed in a delimited distribution pattern. The munition can be arranged within a takeoff canister with a takeoff charge.

Abstract: A safety pin locks a barrel latch while the firearm discharges a round of ammunition. The barrel latch safety locking mechanism is incorporated into the frame and is actuated by the trigger assembly. The barrel latch safety locking mechanism engages the barrel latch to prevent movement during firing keeping the barrel latch engaged with the barrel. The firearm is further comprised of a slide switch that is connected to the barrel latch that allows a user to disengage the barrel latch for loading.

Abstract: A retractable stand comprises a base, two ribbons, and a locking mechanism. Each ribbon has a coiled portion and an uncoiled portion. The uncoiled portions have a curved cross-sectional shape positioned in opposing relation to each other. The locking mechanism is movable between an unlocked position and a locked position where the at least one ribbon is substantially inhibited from moving relative to the base in at least one direction. The locking mechanism can comprise an auto-locking member biased toward the locked position. The locking mechanism can further comprise a trigger mounted on the base and accessible by the user to move the auto-locking member to the unlocked position. Preferably, the retractable stand further includes a manual locking mechanism that can be manually selectively moved between unlocked and locked positions to selectively lock and unlock a position of at least one of the ribbons relative to the base.

Abstract: The present invention discloses a projectile device for the nonlethal immobilization of threats. The invention includes a plurality of grappling-type hooking assemblies attached by a flexible means to a projectile core, a means for the dispersal of the hooking assemblies on or just prior to impact on a target, and a means for ballistically deploying the device from a 12 gauge shotgun, a 35 mm flare gun, a 40 mm grenade launcher, or other suitable launching device. In particular, the hooking assemblies disperse and adhere to the target, while the flexible attachment means entangle and either limit the motion of or immobilize the target.

Abstract: An air gun includes two different types of energy sources that may be used to fire a projectile. A first type of energy source may include an air cylinder having a piston that moves through a cylinder, as urged by a mechanical spring or gas strut, to create compressed air charge for firing a projectile. A second type of energy source may include a compressed gas storage tank that holds compressed air, or another propellant, that is released during firing to urge the piston through the air cylinder to create a compressed air charge for firing a projectile. An air gun may, additionally or alternately, include features that promote efficient delivery of a compressed air charge to a transfer port and projectile chamber, during firing. Examples of such features include piston configurations that reduce or prevent piston rebound through the interaction of the piston face and air cylinder, upon impact.