Abstract: A folding pistol comprising of a first elongated portion including a barrel, with a second elongated portion including a grip. The first and second portions being pivotally connected to each other and movable between a closed position in which the first portion and second portion abut each other to define a rectangular peripheral profile and an open position in which the second portion is angularly disposed with respect to the first portion; and wherein the pistol is operable to discharge when in the open position and in an inoperable condition in the closed position.

Abstract: A hammer and a sear for a fire control system includes a safety notch and a spaced apart triggering surface on the hammer and a firing contact surface and a safety contact surface on the sear. The firing contact surface of the sear is precluded from contacting the safety notch of the hammer in both a safety position of the hammer and the sear and a firing position of the hammer and the sear. Further, a normal to the firing contact surface extends through a pivot pin that provides rotation of the sear.

Abstract: In general terms, this disclosure is directed to a trigger mechanism with a mode selector element that is placeable in a safety mode, a semi-automatic fire mode, and a momentary automatic fire mode. In one possible configuration and by non-limiting example, the mode selector element includes a selector block and a handle portion extending from the selector block to allow the selector block to be rotated between the different modes. The mode selector element is configured such that the selector block can be indexed into the safety mode and the fire mode. The mode selector element is additionally configured such that the selector mode is spring biased to automatically rotate from the momentary automatic fire mode to the fire mode when the handle portion is not constrained by a force, such as when an operator releases the handle portion.

Abstract: In general terms, this disclosure is directed to a trigger mechanism with a mode selector element that is placeable in a safety mode, a semi-automatic fire mode, and a momentary automatic fire mode. In one possible configuration and by non-limiting example, the mode selector element includes a selector block and a handle portion extending from the selector block to allow the selector block to be rotated between the different modes. The mode selector element is configured such that the selector block can be indexed into the safety mode and the fire mode. The mode selector element is additionally configured such that the selector mode is spring biased to automatically rotate from the momentary automatic fire mode to the fire mode when the handle portion is not constrained by a force, such as when an operator releases the handle portion.

Abstract: A barrel bushing and retained bias assembly are provided for engaging a barrel of a firearm to accommodate relative longitudinal movement of the barrel bushing and the barrel. The barrel bushing includes a retaining channel for retaining the bias assembly, such that a portion of the bias assembly extends into a bore of the barrel bushing to contact and be partly compressed by the outside diameter of the barrel.

Abstract: What is disclosed is a braking mechanism for holding a bow string at full draw or any partial draw position along the length of a draw stroke, to enable an archery bow user to maintain a full or partial draw for longer durations of time while exerting less strength or energy than without engaging the braking mechanism.

Abstract: In some embodiments, a trigger mechanism comprises a trigger and a latch. The trigger comprises a body, a bearing and a roller. The roller is arranged to rotate with respect to the body. The body supports the bearing and the bearing supports the roller. The roller comprises a trigger sear. The latch comprises a latch sear that is arranged to contact the trigger sear.

Abstract: In some embodiments, a crossbow trigger mechanism comprises a housing, a trigger, a latch and a latch retaining mechanism. The housing defines a slot. The latch comprises a string catch and a trigger engaging portion. The latch is moveable with respect to the housing between first and second positions. In the first position, the trigger engaging portion contacts the trigger. In the second position, the trigger engaging portion does not contact the trigger. The latch retaining mechanism is arranged to retain the latch in the second position.

Abstract: An arrow gun is provided having a controllable retention force on the arrow. By setting the retention force on the arrow, increased energy from motive compressed gas can be imparted to the arrow. The arrow gun also includes a damping coupling for reducing vibration of an unsupported length of the barrel.

Abstract: A muzzle loading firearm has a sound suppressor mounted on the barrel. Attachment of the suppressor to the barrel may be permanent, as by welding, brazing and adhesive bonding. A guide tube inserted into the suppressor is used to provide a continuous path from the open end of the suppressor to the muzzle end of the barrel to permit loading of propellant charge and projectile from the muzzle end. The guide tube isolates the chambers of the suppressor and prevents grains of the propellant charge from being lost in the suppressor as they are poured into the barrel. The tube also protects the internal components of the suppressor from damage during loading with a ramrod.

Abstract: An adjustable butt stock adapter assembly may provide for vertical and rotational adjustment. A serrated plate may be positioned between an adapter with grooves for establishing a rotational position with the serrated plate, and a butt plate having serrations for establishing a vertical relationship with the serrated plate. The serrated plate may be operatively attached to a spring collar mounted in the adapter, such that pulling the serrated plate away from the collar and adapter overcomes the spring force and allows for adjustment of the rotational position. The butt plate may connect to the serrated plate through an engagement mechanism, such that disengaging the engagement mechanism allows for adjustment of the vertical position.

Abstract: A tool used in fitting a shotgun to a user can be a block and an elongated cross shaped portion extending therefrom. The block has a back side and has a front side from which the cross shaped portion extends at a substantially right angle. The cross shaped portion divides an aligning portion of the flat surface into four regions wherein each of the four regions has an identifying attribute. All the identifying attributes are only seen when viewed from a position aligned longitudinally with the elongated cross shaped portion.

Abstract: An assessment system including a data acquisition module. The data acquisition module includes an accelerometer, a gyroscope, a magnetometer, and a processor. The accelerometer, the gyroscope, and the magnetometer are adapted to generate data corresponding an initial location or position of the data acquisition module before a firearm is discharged. The accelerometer, the gyroscope, and the magnetometer are adapted to generate data corresponding movement, a location, or a position of the data acquisition module during and after the firearm is discharged. The processor is adapted to correlate the data from the accelerometer, the gyroscope, and the magnetometer to movement, a location, or a position of the firearm before, during, and after the firearm is discharged.

Abstract: A sight system for a firearm noise suppressor comprising an exterior profile is disclosed. The sight system contains a front sight assembly defining a front opening for accommodating a front portion of the exterior profile of the firearm noise suppressor, and a rear sight assembly defining a rear opening for accommodating a rear portion of the exterior profile of the firearm noise suppressor.

Abstract: A sight mechanism for firearms such as pistols, rifles and the like. The sight mechanism includes a sight member that has a rear sight that is vertically adjusted. The sight member can be mounted on a vertically moveable member that has a fixing member that sets the vertical position of the sight member. The vertically moveable member may, without limitation, be a pivoting member. The sight mechanism includes magnets that bias the vertical member against the fixing member so that the magnets maintain the sight at the vertical position defined by the fixing member.

Abstract: The Multiple Adversary Suppression System (MASS) is an integrated, digitally controlled nonlethal weapon system designed to disable unshielded humans and interfere with susceptible materiel. MASS emits photic and audio stimulation at intensities designed to cause distress. MASS shields its users from direct photic and analog audio stimulation, instead processing that data digitally and filtering out the disruptive stimuli MASS emits. The physical components of MASS consist of a computer controlled headset with digital visual and audio processing equipment, and a computer controlled emission rig with high intensity photic and audio emission equipment.

Abstract: A multi-contact type position detection apparatus for a target board includes a first membrane board having a plurality of first signal lines formed in a first direction, a second membrane board having a plurality of second signal lines formed in a second direction, and a plurality of dots which are formed on the first membrane board or the second membrane board such that the first membrane plate and the second membrane plate are spaced at a predetermined distance from each other, wherein the plurality of dots can be arranged at a distance of “k/2±A (A is 1%˜2% of k)” when a magnetic body diameter of a pin attached on the target board is “kmm”.

Abstract: Using traceable target plates triggering a LED flashing controller to make different color of LED lights flashing different patterns corresponding to shooting results. The invention can be used in airsoft gun target, archery target, or dart target.

Abstract: A gas generator includes a housing sized and configured to be located within a launch tube for a projectile. The housing defines a first propellant chamber; at least a second propellant chamber comprising a ring situated concentrically around the first propellant chamber; an expansion chamber; at least one first aperture between the first propellant chamber and the expansion chamber; and at least one second aperture between the at least a second propellant chamber and the expansion chamber. The gas generator also includes at least one propellant within each of the first propellant chamber and the at least a second propellant chamber of the housing; and a pyrotechnic delay connecting the first propellant chamber and the second propellant chamber. A launch tube assembly includes a tube containing at least one projectile and a gas generator. Related methods of launching a projectile are also disclosed.

Abstract: Various embodiments of optimized subsonic projectiles are provided along with related methods. For example, one exemplary subsonic projectile can include an elliptical nose cone, a cylindrical body and a boattail with various design features that can be used in a subsonic ammunition cartridge where the subsonic projectile is stabile throughout at least a segment of a flight allowing for better accuracy, maintaining low drag, maximizing range and achieving desired performance while ensuring the projectile stays below the speed of sound and lowering a noise profile of projectile and a launcher firing the projectile.

Abstract: An arrow nock and nock receiver assembly may include first and second interconnections each including a groove portion and a finger. The fingers may have lips that are received in the groove portions. The connection between the nock and nock receiver may provide relative rotational alignment between the nock receiver and the nock as well as relative longitudinal alignment between the nock receiver and the nock.

Abstract: A broadhead arrowhead having fully retractable blades wherein a plunger of the tip of the arrowhead causes the blades to shear a shear pin and deploy when the arrowhead strikes a target. In an alternative embodiment, the blades are retained in the arrowhead by a friction fit that is overcome to deploy the blades when the arrowhead strikes a target.

Abstract: A folding wing for a missile comprises a wing root, an upper wing part foldably supported at the wing root around a swiveling axis, at least one first elastically pre-stressed force element and a latching device. The at least one first elastically pre-stressed force element is coupled with the wing root and the upper wing part and is designed for permanently urging the upper wing part into a working position relative to the wing root through introducing a torque. The latching device is designed for arresting the upper wing part on reaching the working position automatically.

Abstract: A folding wing comprises a wing root, an upper wing part foldable relative to the wing root, at least one guiding device, and an elastically pre-stressed force element. The upper wing part comprises an end edge and a profile foot, wherein the wing root comprises a base and an opposing receiving groove, which is designed to receive the profile foot in a flush manner and is delimited by two delimiting edges having a separation distance that at least equals the maximum profile thickness of the profile foot. The guiding device is arranged at one of the upper wing part and the wing root and is designed for guiding the profile foot in a variable distance to the ground of the receiving groove. The force element is coupled with the wing root and the upper wing part and urges the upper wing part into the receiving groove through the pre-stress.

Abstract: The missile comprises at least one separable propulsion stage and a terminal vehicle arranged to the front of the separable propulsion stage, said missile being provided at the front with a separable protective fairing comprising at least two individual shells and with a connecting part connected to the missile towards the rear beyond the position of the rear end of the terminal vehicle. The protective fairing is configured such that, when mounted on the missile, it surrounds all of the terminal vehicle and it is connected at the rear end to the connecting part by means of articulated connecting elements.

Abstract: A hunting arrow for tracking target animals is disclosed and described. The arrow can include a chamber. The arrow may also include a transmitter housing that is installable into the chamber. A pair of bores extending through the transmitter housing and chamber may be configured and adapted for receiving a pair of shear pins. The shear pins may secure the housing in the chamber. The transmitter housing may comprise an animal engagement member, such as a hook. The transmitter housing is ejected from the chamber when the arrow strikes a target animal and the hook stops the forward momentum of the transmitter housing with sufficient force to shear the shear pins, thereby ejecting and embedding the transmitter housing in the hide of the animal. The transmitter within the housing may broadcast the location of the animal to the hunter to enable easy tracking of the animal, if wounded.

Abstract: An open-loop thermal control system and method for components that generate heat includes a reservoir for containing a pressurized working fluid, a first heat exchanger in thermal communication with the working fluid, a Joule-Thomson expansion valve in fluid communication with the reservoir, and a second heat exchanger in fluid communication with the valve. The first heat exchanger is configured to transfer heat from the components to the fluid in the reservoir. The valve is configured to expand the working fluid into a two-phase fluid having a primary use of cooling. The second heat exchanger is configured to receive heat from the components and receive the two-phase fluid. The second heat exchanger provides a single-phase working fluid for at least one secondary use before the working fluid is expelled from the thermal control system.

Abstract: The present invention in some aspects is directed to small arms ammunition and programmed upset characteristics thereof imparted to them using high energy beams. More particularly, the invention relates to ammunition and methods of making ammunition having predetermined patterns of engraving and/or cutting or hardening and/or annealing imparted in the ammunition's forward portion using a programming laser or electron beam system adapted for treating projectiles to effect predetermined and consistent upset configurations.

Abstract: Magnetoquasistatic through-the-wall non-line-of-sight coupling between a mobile transmitting device located within a building, or indoor, and a fixed receiving device located outside the building, outdoor, enables positioning of the transmitting device through the wall of the building and in non-line-of-sight environments. Systems based on magnetoquasistatic coupling can separately sense the distance and orientation of the transmitting device accurately even in heavy non-line-sight environments such as steel-reinforced buildings. The approach permits sensing and determination of location and attitude of mobile devices in buildings and can be used to locate rescue workers, first responders, or law enforcement officers inside a building.

Abstract: Disclosed herein are interferometric measurement systems and methods. In one exemplary embodiment an interferometric measuring system for measuring the distance to or displacement of an object includes: a light source; an interferometer with a measuring arm and a reference arm; a dispersive medium; and a detector. The interferometer is disposed between the light source and the object. The dispersive medium is arranged to unbalance the dispersion between the measurement arm and the reference arm. The detector is arranged to detect spectrum interference from the interferometer. In one example, the dispersive medium is a chirped fiber Bragg grating. In another example, the dispersive medium is a highly dispersive optical fiber. In one example, the light source is a broadband light source, and the detector includes a spectrometer. In another example, the light source is a wavelength swept laser, and the detector includes a photodetector or a balanced photodetector.

Abstract: A method and system are proposed to obtain a reduced speckle noise image of a subject from optical coherence tomography (OCT) image data of the subject. The cross sectional images each comprise a plurality of scan lines obtained by measuring the time delay of light reflected, in a depth direction, from optical interfaces within the subject. The method comprises two aligning steps. First the cross sectional images are aligned, then image patches of the aligned cross sectional images are aligned to form a set of aligned patches. An image matrix is then formed from the aligned patches; and matrix completion is applied to the image matrix to obtain a reduced speckle noise image of the subject.

Abstract: A tomography apparatus based on a low coherence interferometer according to embodiments of the inventive concepts may include a plurality of wavelength-tunable lasers arranged in parallel, and an optical coupling unit interleaving pulses sequentially outputted from the plurality of wavelength-tunable lasers to increase a wavelength tuning speed of the wavelength-tunable lasers by N times where ‘N’ corresponds to the number of the wavelength-tunable lasers. According to embodiments of the inventive concepts, the tomography apparatus may rapidly increase the wavelength tuning speed by applying the interleaving technique to obtain accurate tomographic image information, and thus the tomography apparatus can be widely used in medical fields (e.g., medical engineering and biomedical engineering), an aerospace field, a spectroscopy field, and a sensor field.

Abstract: A method for measuring an implant dosage distribution of a semiconductor sample is provided. The method includes generating a photomodulation effect in a three-dimensional structure of the semiconductor sample and measuring a reflection information of the three-dimensional structure. A geometry information of the three-dimensional structure of the semiconductor sample is obtained. The geometry information of the three-dimensional structure is converted into a estimated reflective data. The reflection information is compared with the estimated reflective data to determine the implant dosage distribution of the three-dimensional structure of the semiconductor sample.

Abstract: A method for scanning and obtaining three-dimensional (3D) coordinates is provided. The method includes providing a 3D measuring device having a projector, a first camera and a second camera. The method records images of a light pattern emitted by the projector onto an object. The 3D measuring device is moved from a first position and a second position along a second path. A gesture and a corresponding control function are determined based at least in part on the first position and the second position.

Abstract: An articulated arm coordinate measurement machine is provided with a power supply having multiple power sources. The power supply having an input configured to receive electrical power from an external energy supply and first and second energy storage members. The first energy storage member having a first processing circuit configured to measure at least one first parameter and transmit a first signal to the first electronic circuit. The second energy storage member having a second processing circuit configured to measure at least one second parameter and transmit a second signal to the first electronic circuit. Wherein the power supply is configure to selectively transfer electrical power from at least one of the first and second energy storage members, the power supply further being configured to change the transfer of electrical power from the first and second energy storage members in response to the first signal and second signal.

Abstract: Non-contacting caliper measurements of free standing sheets such as porous polymer and paper detect mid-IR interferometric fringes created by the reflection of light from the top and bottom surfaces of the sheet. The technique includes directing a laser beam at a selected angle of incidence onto a single spot on the exposed outer surface wherein the laser beam comprises radiation having a wavelength in the 3-50 micron range and scanning the laser beam through a selected angle range as the laser beam is directed onto the exposed outer surface and measuring the intensity of an interference pattern that forms from the superposition of radiation that is reflected from the exposed outer surface and from the inner surface. Thickness can be extracted from the fringe separation in the interference pattern. Rotating and focusing elements ensure that the spot position on the sheet remains the same while varying the incident angle.

Abstract: A distance measurement device includes an imaging unit which captures a subject image formed by an imaging optical system, an emission unit which emits directional light as light having directivity along an optical axis direction of the imaging optical system, a light receiving unit which receives reflected light of the directional light from the subject, a derivation unit which derives a distance to the subject based on the timing at which the directional light is emitted and the timing at which the reflected light is received, a display unit which displays the subject image, and a control unit which performs control such that, in a case of performing a distance measurement, the display unit displays the subject image as a motion image and transition is made to a state where actual exposure by the imaging unit is possible at the timing of the end of the distance measurement.

Abstract: In accordance with disclosed embodiments, there are provided systems, methods, and apparatuses for implementing maximum likelihood image binarization in a coded light range camera.

Abstract: In accordance with disclosed embodiments, there are provided systems, methods, and apparatuses for implementing maximum likelihood image binarization in a coded light range camera.

Abstract: Measuring a surface geometry of an object involves capturing one or more images of the object illuminated by a light field produced by one or more luminaires having multiple pixel-layers with overlapping fields of illumination. Each pixel-layer simultaneously and in synchronization with each other displays multiple coded patterns such that combinations of the multiple coded patterns uniquely identify directions of light rays originating from the multiple pixel-layers. A unique incident light ray direction for each pixel of the captured one or more images is determined by decoding the combinations of the multiple coded patterns. The surface geometry of the object is recovered using the determined unique incident light ray direction for each pixel of the one or more captured images.

Abstract: A hybrid wheel alignment system and methodology use passive targets for a first pair of wheels (e.g. front wheels) and active sensing heads for another pair of wheels (e.g. rear wheels). The active sensing heads combine image sensors for capturing images of the targets with at least one spatial relationship sensor for sensing a relationship between the active sensing heads. One or both of the active sensing heads may include inclinometers or the like, for sensing one or more tilt angles of the respective sensing head. Data from the active sensing heads may be sent to a host computer for processing to derive one or more vehicle measurements, for example, for measurement of parameters useful in wheel alignment applications.

Abstract: Provided are a device and a method for inspecting a cylindrical member. During inspection of a cylindrical member, a degree of widthwise misalignment of a strip-shaped member wound around a molding drum is calculated by a control unit on the basis of detection data from a position sensor and position data of drum-widthwise end faces that are perpendicular to a drum axial center of the molding drum, and the widthwise misalignment of the strip-shaped member is determined to be inside or outside an allowable range on the basis of the calculation result.

Abstract: Aspects of the disclosure relate to computing technologies. In particular, aspects of the disclosure relate to mobile computing device technologies, such as systems, methods, apparatuses, and computer-readable media for improving orientation data. In one embodiment, techniques are described for filtering data associated with a sensor coupled to a computing device, by receiving a signal from the sensor, detecting a change in a variability of a first signal parameter from a plurality of signal parameters from the signal, and adjusting, based at least in part on the detected change in the variability of the first signal parameter, at least one filter parameter of a filter used to filter a second signal parameter from the signal.

Abstract: An apparatus and a method for auto-leveling a steering wheel include an angle sensor configured to sense an inclination of the steering wheel; and a communication unit configured to wirelessly transmit an angle measured by the angle sensor to a controller controlling a driving of a motor driven power steering (MDPS).

Abstract: Technology for determining a position of a platform is described. A location of a horizon line can be determined using a sensor onboard the platform. One or more celestial objects in the sky can be detected using the sensor onboard the platform. Differential angular measurements between the horizon line and at least one of the celestial objects in the sky can be determined over a duration of time. The position of the platform can be determined based on the differential angular measurements between the horizon line and the celestial objects.

Abstract: An ascent rate indicator mechanism includes a first wheel set and a pressure sensor. The first wheel set is connected to the pressure sensor driven in rotation by a pressure variation. The mechanism further includes a second wheel set driven by the first wheel set in a single direction of rotation from a start position into a measurement position corresponding to a decrease in pressure, uncoupling and return structure to be actuated at regular intervals to uncouple the second wheel set and to return it to the start position, an ascent rate display mechanism connected to the second wheel set and including an indicator member arranged to occupy, at each regular interval, a display position representative of the decrease in pressure during the interval, and synchronization structure actuated at each regular interval and arranged to maintain the display position of the indicator member during the regular interval.

Abstract: A spirit level has a base ruler having a hollow chamber and a leveling bubble unit. The leveling bubble unit includes a bubble tube, a bubble tube base and a fixing base. The fixing base has a limit slot for the bubble tube base. The position on the base ruler where the leveling bubble unit is configured has an inlaying opening. The fixing base of the leveling bubble unit is hidden inside the hollow chamber in a sinking style, such that, when the fixing base is placed into the hollow chamber, the tip end of the fixing base is held inside the inlaying opening. The two sides of the top of the fixing base are respectively configured with elastic clasps, and the tip end of the elastic clasp has a slant resisting surface to resist against the corner of the inner wall of the inlaying opening.

Abstract: A physical quantity detection circuit includes: a synchronous detection circuit that performs a synchronous detection process on a detection target signal based on a detection signal, the detection target signal including a physical quantity detection signal and a leakage signal from a physical quantity detection element, the physical quantity detection element vibrating based on a drive signal to generate the physical quantity detection signal corresponding to a magnitude of a physical quantity, and the leakage signal of vibrations based on the drive signal; and a phase shift circuit that switches a phase difference between the detection signal and the detection target signal, between a first phase difference and a second phase difference that differs from the first phase difference, so that at least part of the leakage signal is output through the synchronous detection process.

Abstract: An inertial force sensor includes a detecting device which detects an inertial force, the detecting device having a first orthogonal arm and a supporting portion, the first orthogonal arm having a first arm and a second arm fixed in a substantially orthogonal direction, and the supporting portion supporting the first arm. The second arm has a folding portion. In this configuration, there is provided a small inertial force sensor which realizes detection of a plurality of different inertial forces and detection of inertial forces of a plurality of detection axes.

Abstract: This invention relates to a navigation system for integrating a number of positioning receivers to obtain a final position. The navigation system comprises an operation and control module and a unifying module. The operation and control module is being configured to receive a location data from each of the positioning receivers and transmits the location data to the unifying module. The unifying module will then determine the final position based on a statistical model. In particular, the statistical model uses normal distribution to determine the final position. This final position is then displayed on the display of the navigation system.