Abstract: Methods and systems for direct-write liquid phase epitaxy of ionic materials are provided for herein, and relate to the manufacture of metal halide optics among other applications. Deposition of the ionic material is induced by mixing at least two fluids of differing composition, wherein the solubility limit of the ionic material in the mixed solution is lower than predicted from a linear combination of the original fluids. This deposition process is spatially controlled using a printhead, enabling localized material deposition and the ability to create arbitrary geometries in turn. In some cases, at least one of the fluids is saturated with the ionic material and surrounds the substrate upon which deposition occurs.

Abstract: Systems for holding tactical gear, such as firearm magazines, weapons, etc., and for connecting such holders to a harness are described and may include a carrier, and an accessory holder that is configured to attach to the carrier. The carrier and/or the accessory holder may be formed from substantially rigid materials, such as plastic or the like, and may be configured to be easily attached and detached from one another, using preconfigured, integral connectors. The connectors may be configured to resist rotation of the carrier and accessory holder with respect to each other, and/or to secure the accessory holder at a fixed angle with respect to the carrier. The accessory holder may also include flanges, surface treatments, or other features, that assist in holding the accessory in the holder.

Abstract: Embodiments are directed toward a pivot pin for a coupling an upper receiver of a firearm to a lower receiver of the firearm. In some embodiments, the pivot pin includes a head and a shaft that extends from the head. In some embodiments, the shaft defines a detent-retention channel and an installation aperture opposite the channel from the head. In some embodiments, the channel is configured to receive a detent and to enable the pivot pin to slide between a locked configuration and an unlocked configuration. In some embodiments, the installation aperture is configured to receive a tool that extends through the shaft, thereby urging the detent into a detent recess in the lower receiver while the shaft covers the detent recess in the lower receiver. Accordingly, the installation aperture facilitates reducing the likelihood that the detent escapes from the detent recess during installation of the pivot pin.

Abstract: Accessory holders are described having a mounting portion that attaches the accessory holder to wearable support structure, and a carrier frame that holds a first personal accessory. A rotating arm connects the carrier frame to the mounting portion. The carrier frame includes a retaining mechanism, such as an elastomeric strap, nylon webbing, hook and loop fasteners, etc., for holding the first personal accessory to the carrier frame. The arm includes a hinge configured to allow the carrier frame to move between a folded position and an unfolded position with respect to the mounting portion and the mounting portion includes attachment means, such as attachment or mounting straps, spear fittings, hook and loop fasteners, etc., for securing the accessory holder to the wearable support structure.

Abstract: Provided is a modular firearm muzzle device having a multi-piece housing assembled from a plurality of substantially tubular, axially assemblable wall members that have a first interior cross-sectional size. A mounting member is mountable to a firearm muzzle. A forward wall has a central passageway that is aligned with the firearm muzzle and has a cross-section size smaller than the first cross-sectional size. The wall members are assembled with the mounting member and forward wall to define an interior chamber through which a projectile passes from the muzzle. The device can be assembled with fewer or more wall members to adjust the length of the interior chamber.

Abstract: Disclosed is a device that includes a housing attachable to a pressure gauge, and a pressure indicator manually pivotable within the housing to a set position. The housing is configured to enclose and retain the pressure indicator in the set position.

Abstract: A toy gun having a pair of sides are joined together using a number of pins inserted through pin holes passing through the pair of sides. A trigger and a slide are sandwiched between the pair of sides and are secured therein. A pivot pin allows the trigger to be pulled rearwardly such that it presses against the slide, moving it reward as well. When this occurs, the slide moves out from between the two sides, pushing the elastic bands away from static notches located on the rear end of the sides. This causes the top-most elastic band to fire away from the gun, and the remaining elastic bands to be reseated upwardly into the next adjacent respective static notch. The elastic bands pull the trigger back into its original position, allowing for semi-automatic firing.

Abstract: A setting tool for setting frac plugs and the like can include a mandrel having a chamber for housing expandable gas and a gas port in fluid communication with the chamber; a firing head secured to the mandrel for igniting a power charge to generate pressurized gas within the chamber; a barrel piston housing the mandrel and connected to a sleeve for setting the frac plug; and an expansion region defined between the mandrel and the barrel piston and receiving the pressurized gas which exerts force to cause a stroke of the barrel piston over the mandrel as the expansion region expands axially. The setting tool can include various features, such as certain gas bleed systems, an enhanced shear screw assembly, a bleed port and plug assembly, a scribe line, a particular gas port configuration, a liquid escape conduit, no-shoulder barrel configuration, and/or a low-force design for frac plugs.

Abstract: A modular track and dolly system for cinematography includes a set of detachable, human-portable track sections, each including a unitary rigid frame supporting first and second spaced apart guide rails and having at least at least one connection plate at each longitudinal end of the frame providing a precise joint interface surface for aligning adjacent track sections. The rigid frame may include a pair of longitudinally extending chords connected by perpendicular struts and two or more web members extending at an oblique angle relative to the chords and struts. Each track section may also include a lightweight subframe made up of an assembly of longitudinal members and lateral stringers connected together, with the rigid frame being supported on and attached to the subframe. A dolly for carrying a cinematography robot is guided by the guide rails and may include a motor-driven pinion that engages a rack on the track.

Abstract: A setting tool for setting frac plugs and the like can include a mandrel having a chamber for housing expandable gas and a gas port in fluid communication with the chamber; a firing head secured to the mandrel for igniting a power charge to generate pressurized gas within the chamber; a barrel piston housing the mandrel and connected to a sleeve for setting the frac plug; and an expansion region defined between the mandrel and the barrel piston and receiving the pressurized gas which exerts force to cause a stroke of the barrel piston over the mandrel as the expansion region expands axially. The setting tool can include various features, such as certain gas bleed systems, an enhanced shear screw assembly, a bleed port and plug assembly, a scribe line, a particular gas port configuration, a liquid escape conduit, no-shoulder barrel configuration, and/or a low-force design for frac plugs.

Abstract: A setting tool for setting frac plugs and the like can include a mandrel having a chamber for housing expandable gas and a gas port in fluid communication with the chamber; a firing head secured to the mandrel for igniting a power charge to generate pressurized gas within the chamber; a barrel piston housing the mandrel and connected to a sleeve for setting the frac plug; and an expansion region defined between the mandrel and the barrel piston and receiving the pressurized gas which exerts force to cause a stroke of the barrel piston over the mandrel as the expansion region expands axially. The setting tool can include various features, such as certain gas bleed systems, an enhanced shear screw assembly, a bleed port and plug assembly, a scribe line, a particular gas port configuration, a liquid escape conduit, no-shoulder barrel configuration, and/or a low-force design for frac plugs.

Abstract: Load carriage systems are described including one or more of a first chest panel, a first back panel, and a self-adjusting cummerbund connecting the first chest panel and the first back panel. The self-adjusting cummerbund may include a tensioning mechanism configured to allow the cummerbund to extend and retract, and may be configured to provide varying resistive force. The tensioning mechanism may include one or more of a sliding portion, a continuous patterned length of material that is folded over itself, and an elastic member that is attached to the sliding member and the length of material. Body armor plates may be held between outer and inner chest panels and/or between outer and inner back panels. A strip of webbing may be used to secure the body armor plate between the outer and inner panels.

Abstract: Described are data abstraction systems, methods, and media for aggregating and abstracting data records from data providers, which are not substantially interoperable with each other. Features include data provider connector modules dynamically loaded, based on definitions stored on disk, that facilitate data mapping and individual matching.

Abstract: A setting tool for setting frac plugs and the like can include a mandrel having a chamber for housing expandable gas and a gas port in fluid communication with the chamber; a firing head secured to the mandrel for igniting a power charge to generate pressurized gas within the chamber; a barrel piston housing the mandrel and connected to a sleeve for setting the frac plug; and an expansion region defined between the mandrel and the barrel piston and receiving the pressurized gas which exerts force to cause a stroke of the barrel piston over the mandrel as the expansion region expands axially. The setting tool can include various features, such as certain gas bleed systems, an enhanced shear screw assembly, a bleed port and plug assembly, a scribe line, a particular gas port configuration, a liquid escape conduit, no-shoulder barrel configuration, and/or a low-force design for frac plugs.

Abstract: Load carriage systems are described including one or more of a first chest panel, a first back panel, and a self-adjusting cummerbund connecting the first chest panel and the first back panel. The self-adjusting cummerbund may include a tensioning mechanism configured to allow the cummerbund to extend and retract, and may be configured to provide varying resistive force. The tensioning mechanism may include one or more of a sliding portion, a continuous patterned length of material that is folded over itself, and an elastic member that is attached to the sliding member and the length of material. Body armor plates may be held between outer and inner chest panels and/or between outer and inner back panels. A strip of webbing may be used to secure the body armor plate between the outer and inner panels.

Abstract: Systems for holding tactical gear, such as firearm magazines, weapons, etc., and for connecting such holders to a harness are described and may include a carrier, and an accessory holder that is configured to attach to the carrier. The carrier and/or the accessory holder may be formed from substantially rigid materials, such as plastic or the like, and may be configured to be easily attached and detached from one another, using preconfigured, integral connectors. The connectors may be configured to resist rotation of the carrier and accessory holder with respect to each other, and/or to secure the accessory holder at a fixed angle with respect to the carrier. The accessory holder may also include flanges, surface treatments, or other features, that assist in holding the accessory in the holder.

Abstract: A setting tool for setting frac plugs and the like can include a mandrel having a chamber for housing expandable gas and a gas port in fluid communication with the chamber; a firing head secured to the mandrel for igniting a power charge to generate pressurized gas within the chamber; a barrel piston housing the mandrel and connected to a sleeve for setting the frac plug; and an expansion region defined between the mandrel and the barrel piston and receiving the pressurized gas which exerts force to cause a stroke of the barrel piston over the mandrel as the expansion region expands axially. The setting tool can include various features, such as certain gas bleed systems, an enhanced shear screw assembly, a bleed port and plug assembly, a scribe line, a particular gas port configuration, a liquid escape conduit, no-shoulder barrel configuration, and/or a low-force design for frac plugs.

Abstract: A setting tool for setting frac plugs and the like can include a mandrel having a chamber for housing expandable gas and a gas port in fluid communication with the chamber; a firing head secured to the mandrel for igniting a power charge to generate pressurized gas within the chamber; a barrel piston housing the mandrel and connected to a sleeve for setting the frac plug; and an expansion region defined between the mandrel and the barrel piston and receiving the pressurized gas which exerts force to cause a stroke of the barrel piston over the mandrel as the expansion region expands axially. The setting tool can include various features, such as certain gas bleed systems, an enhanced shear screw assembly, a bleed port and plug assembly, a scribe line, a particular gas port configuration, a liquid escape conduit, no-shoulder barrel configuration, and/or a low-force design for frac plugs.