Abstract: A system for cocking mechanism for a crossbow that uses an elongated handle pivotally attached to the center support to move a traveler engaged with the draw string from a release configuration to a drawing configuration and into engagement with a trigger assembly. A ratcheting mechanism prevents the elongated handle from moving toward the open configuration as the crossbow is being cocked.

Abstract: An archery training system provides an archer the ability to safely condition psychologically and physically without the need of a bow and arrow while maintaining the sensation of using a bow and arrow. The archery training system is easily portable or stowed, and offers a combination of variables replicating the activity of compound and traditional bow shooting, such as a counter balanced replication of a grasped bow while drawing a bowstring, an archery release aid configured to mimic the finger positioning of a traditional bow, the utilization of accessory bow sights for target acquisition and aiming, the adjustability to accommodate the various hand grip styles unique to each archer, and immediate visual feedback to performance or shooting technique.

Abstract: An adjustable firearm stock has a frame having a forward extending barrel defining a barrel axis and defining an elongated passage adapted to receive a reciprocating bolt, the frame having a first attachment facility registered with the barrel axis and adapted to receive a buffer tube defining a cavity adapted to receive a buffer spring operable to interact with the bolt, the frame having second attachment facility spaced apart from the barrel axis and from the first attachment facility, a telescoping stock defining a sleeve bore coaxial with the barrel axis and closely and slidably receiving the buffer tube, the stock defining a second bore parallel to and laterally offset from the first bore, an elongated support element slidably received in the second bore, and the support element having a forward end operable to removably engage the second attachment facility.

Abstract: A firearm handguard is disclosed. The handguard comprises a first side section, a second side section coupled to the first side section by a plurality of interlocking fingers, and a bottom section coupled to the first side section and the second side section. The first side section and the second side section each contain at least one accessory mounting aperture. The first side section and the second side section are comprised of a polymer material having molded therein a reinforcement liner including at least one reinforcement aperture. The at least one accessory mounting aperture is aligned with the at least one reinforcement aperture.

Abstract: The embodied invention features a combination display with four individual displays to facilitate handgun training with a laser firing hand weapon. The first is a target display with a skeletal hand-arm position of a trainee. The second is a side view of the skeletal hand-arm position. The third a target display to provide for viewing the shots as they hit the target. The fourth display is a side view of the trainee as seen by a video camera. All of the displays are recorded during a laser target practice and are immediately available for the trainee to view and learn about correct positioning and stability.

Abstract: A mobile ballistics processing and display system for receiving data associated with one or more ballistics variables, for processing such variables, and for displaying a ballistics solution associated with such variables in an easily and quickly understandable map format. One or more ballistics variables are inputted into a mobile computing device or are otherwise acquired by such device. Projected in-flight projectile characteristics are calculated by the computing device based upon ballistics variables. Users are provided with the ability to input in-flight bullet characteristics criteria into the computing device. The computing device is configured to depict in map format, projected paths of a projectile from one or more shooter locations to one or more target locations.

Abstract: A firearm accessory mounting system includes a mounting assembly coupled to a firearm accessory, a mounting fastener, and a mounting bolt. The mounting fastener is rotatable between a locked positioned and an unlocked position. The mounting bolt is coupled to the mounting fastener for rotating the mounting fastener between the locked position and the unlocked position.

Abstract: The present invention provides a lightweight blast-mitigating polycarbonate laminate system comprising at least one polycarbonate sheet, a portion of which is laminated to a glass layer having a thickness between 0.25 times and less than 1 times the thickness of the polycarbonate sheet. The laminate system may further include fasteners to attach the system to a building, positioned to prevent the laminate system from breaking or detaching in case of a blast event.

Abstract: A modular ballistic barrier assembly for deployment in proximity to a protected high value asset such as electrical grid equipment. A ballistic barrier assembly comprises a plurality of prefabricated ballistic barrier panel units that can be stacked on top of each other. Each panel unit is made of spaced apart angled steel louvers or slats, arranged in one or more sections. The louvers are arranged in one or more vertically extending, spaced apart rows, having an outwardly facing row of louvers presenting a downwardly angled surface to an approaching projectile, and an inwardly facing row of louvers presenting a second layer of ballistics protection. Steel I-beam support columns are provided at spaced apart intervals to receive and support a stack of panel units. The panel units are made to interlock with vertically adjacent, stacked panels, so that multiple panel units can be stacked.

Abstract: There is provided an inflatable dummy target comprising a chassis wrapped with a sheet. The chassis can be formed by individual inflatable ducts and can comprise at least two ring-shaped ducts interconnected by one or more elongate ducts. The inflatable dummy target can further comprise rigidizing ducts. The inflatable dummy target geometry can be conical, cylindrical, etc. Optionally, the inflatable dummy target can comprise several attached axi-symmetrical sections, wherein each section has a chassis wrapped with a sheet, the chassis formed by individual inflatable ducts. Optionally, the shape of each section can be selected from the group consisting of conical, frustoconical and cylindrical forms.

Abstract: Various systems, devices, processes, and techniques may be used for marksmanship training. In particular implementations, motion data for a firearm may be acquired during live operation by a firearm operator using a sensor assembly coupled to a firearm. The motion data may be analyzed to detect a firing event, and the firing event may be used to pretrigger recording of the motion data. In certain implementations, the recorded motion data may be analyzed to determine inappropriate firing control actions, if any, and to provide corrective actions to a firearm operator about inappropriate firing control actions.

Abstract: A consumer-ready, disposable pyrotechnic display system includes a pyrotechnic module and a control module. The pyrotechnic module includes a mounting substrate, electrically ignitable pyrotechnic devices, and electrical conductors connected to the pyrotechnic devices and disposed beneath the mounting substrate. The control module includes a housing having an upper surface and a bottom surface on which electrical contacts are disposed; and a processor, a memory, a power supply, and a transceiver within the housing. The electrical conductors are connected to the electrical contacts prior to receipt by the consumer. When the transceiver receives a signal from a remote device (such as a cellular telephone), the processor ignites each of the electrical conductors in a sequence programmed into the memory of the control module.

Abstract: A casing for use in a cartridge for a firearm comprises a sleeve and attached base. The sleeve has cylindrical portion with a mouth for holding a bullet and an opposing bulkhead from which extends a nipple. At the terminal end of the nipple is a lip that radially decreases in thickness and has curved surface portions; the lip forms a first seal region within a passageway that runs through the base. Preferably a second seal zone around the nipple near the bulkhead. A bulkhead comprises a circumferential wave or ridge that creates a hollow on the surface facing the base. A sleeve is preferably made of austenitic stainless steel that has differential hardness and magnetic properties along the sleeve length; and the base has a hardness less than any portion of the sleeve.

Abstract: Arrowhead (1) for a target, comprised of an arrowhead body (2) having three portions, including a front portion (2a), a central portion (2b), and a rear portion (2c), the front portion constituting the point for penetrating into the target, comprising mechanisms for facilitating the removal of the lodged arrow, such mechanisms being formed by at least one projecting profile (3), characterized in that the projecting profile(s) is/are in the form of a portion of a sphere.

Abstract: A warhead includes a casing having a removable front portion, a plurality of explosive segments positioned in the casing, a plurality of spacers positioned in the casing and separating the plurality of explosive segments from each other, and a removable piston configured to be inserted inside the removable front portion of the casing, wherein the removable piston pushes against the plurality of explosive segments to create a continuous segment. The removable piston may push against the plurality of explosive segments to close the plurality of spacers and move the warhead from an off position to an on position. The continuous segment may be above an explosive failure thickness in the on position. The continuous segment may be configured to detonate upon reaching the failure thickness.

Abstract: Frangible firearm projectiles, firearm cartridges containing the same, and methods for forming the same. The firearm projectiles are formed from a compacted mixture of metal powders that includes zinc and iron powders and which may include an anti-sparking agent. The compacted mixture is heat treated for a time sufficient to form a plurality of discrete alloy domains within the compacted mixture. The frangible firearm projectile may be formed by a mechanism that includes vapor-phase diffusion bonding and oxidation of the metal powders and that does not include forming a liquid phase of any of the metal powders or utilizing a polymeric binder. A majority component of the frangible firearm projectile may be iron. One or more of zinc, bismuth, tin, copper, nickel, tungsten, boron, and/or alloys thereof may form a minority component of the frangible firearm projectile. The anti-sparking agent may include a borate, such as boric acid.

Abstract: A system for controlling at least one electronic detonator generates, as output, an output power supply signal intended to power the at least one electronic detonator and generating commands to fire the at least one electronic detonator, the control system including a control module configured to generate firing commands and to generate a first power supply signal. The control system further includes a power supply module generating a second power supply signal intended to power the at least one electronic detonator, the output power supply signal corresponding to the second power supply signal once a command to fire the at least one electronic detonator has been generated, and corresponding to the first power supply signal as long as no firing command has been generated.

Abstract: The present invention relates measuring tapes and methods for making thereof. In particular, the measuring tape of the present invention contains a wipe mechanism for cleaning the tape as it retracts into its housing. The wipe mechanism contains a top wipe and a bottom wipe for removing debris from the top and bottom surfaces of the tape, respectively, when it is retracted after use.

Abstract: A linear gage includes a spindle, a guide cylinder surrounding a portion of the spindle and configured to guide the spindle to move forward and rearward in an axis line direction, and a guide slit portion having a guide slit extending parallel to the axis line of the guide cylinder, with a gap provided between the guide slit and an outer surface of the guide cylinder. An attitude adjustment pin extends into the guide slit and is fixed to a side surface of the spindle. The attitude adjustment pin is an eccentric pin.

Abstract: Various downhole logging tools and methods of using and making the same are disclosed. In one aspect, a downhole logging tool for inspecting one or more well tubulars includes a housing adapted to be supported in the one or more well tubulars by a support cable. A first transmitter, a second transmitter and a third transmitter are positioned in longitudinally spaced-apart relation in the housing and are operable to generate magnetic fields. Driving circuitry is operatively coupled to the first transmitter, the second transmitter and the third transmitter to selectively fire the first transmitter, the second transmitter and the third transmitter in multiple transmission modes to generate magnetic fields to stimulate pulsed eddy currents in the one or more well tubulars. A first receiver is positioned in the housing to sense decaying magnetic fields created by the pulsed eddy currents.

Abstract: An electroplating reactor includes an electro-plating solution in a bath, a ring cathode in the bath and located to contact a workpiece such that only the front side of the workpiece is immersed in the solution, plural anodes immersed in the bath below the ring cathode, and plural anode voltage sources coupled to the plural anodes; plural thickness sensors at spatially separate locations on the back side of the workpiece with feedback control to the anode voltage sources.

Abstract: A method of inspecting an object with a camera probe for capturing an image of an object, the camera probe being movable along a path by a measurement apparatus, at least a part of the camera probe being rotatable about at least one axis. The method includes: a) the measurement apparatus moving the camera probe relative to the object along an inspection path and b) for at least one period as the camera probe moves along the inspection path: turning at least a part of the camera probe about the at least one axis thereby slowing the passage of a feature of interest on the object across the camera probe's field of view; and capturing at least one image of the feature of interest during at least a portion of the turning.

Abstract: A light receiving device includes a light receiving element and an operation unit. The light receiving element receives light that is partly blocked by an object to be measured, on first and second light receiving regions to output respective first and second output currents. The output unit outputs the first and second output current or a value based thereon to the outside. When the direction parallel to a light receiving surface of the light receiving element and perpendicular to the first direction is defined as a second direction, a length of the second light receiving region in the second direction is, entirely in the first direction, longer than the length of the first light receiving region in the second direction.

Abstract: Spatially modulated light emanating from an object moving along a flow path is used to determine various object characteristics including object length along the flow direction. Light emanating from at least one object moving along in a flow path along a flow direction of a spatial filter is sensed. The intensity of the sensed light is time modulated according to features of the spatial filter. A time varying electrical signal is generated which includes a plurality of pulses in response to the sensed light. Pulse widths of at least some of the pulses are measured at a fraction of a local extremum of the pulses. The length of the object along the flow direction is determined based on the measured pulse widths.

Abstract: To provide a confocal displacement sensor capable of reducing a measurement error. Light having a plurality of wavelengths is emitted by a light processing section 120. A chromatic aberration along an optical axis direction is caused by a lens unit 220 in the light emitted by the light projecting section 120. The light having the chromatic aberration converged and irradiated on a measurement object S by the lens unit 220. In the light irradiated on the measurement object S by the lens unit 220, light having a wavelength reflected while focusing on the surface of the measurement object S passes through a plurality of pinholes. Displacement of the measurement object S is calculated by an arithmetic processing section 150 on the basis of signal intensity for each wavelength of an average signal corresponding to an average of intensities for each wavelength concerning a plurality of lights passed through the plurality of pinholes.

Abstract: The present disclosure provides a system and method for providing an improved protective coating for a substrate that may be inspected using the unaided eye or other apparatus under available light. The protective coating is mixed with an additive including flakes or particles that, when applied to the substrate as part of the protective coating, allow the user to empirically determine if the surface has received an adequate protective coat. The determination of whether or not any defects exist may include comparing the observed appearance of the specialty pigment particles with a comparative standard.

Abstract: An optical measuring apparatus for magnifying displacement includes a seat, a movable abutting member, a plurality of static optical sensing elements and a dynamic optical sensing element. The seat includes a positioning groove. The movable abutting member is pivotally connected to the seat and corresponding to the positioning groove. An object is sandwiched between the movable abutting member and the positioning groove. The static optical sensing elements are disposed on the seat. The dynamic optical sensing element is disposed on the movable abutting member. There is an optical sensing distance between the dynamic optical sensing element and one of the static optical sensing elements. The dynamic optical sensing element is moved along an arc path by the movable abutting member so as to change the optical sensing distance, and a change of the optical sensing distance is greater than a change of a diameter of the object.

Abstract: A method and system estimates a three-dimensional (3D) pose of a sensor by first acquiring scene data of a 3D scene by the sensor. Two-dimensional (2D) lines are detected in the scene data and the 2D lines are matched to 3D lines of a 3D model of the scene to produce matching lines. Then, the 3D pose of the sensor is estimated using the matching lines.

Abstract: Interferometer (10) for the real-time measurement of absolute distances and/or relative position movements between a first and a second machine part, comprising a measurement unit (20) and a reflector unit (40). wherein the measurement unit (20) comprises a housing (21) with at least one wall made of heat-conducting material, wherein several measurement elements are arranged in the housing (21), wherein the measurement elements comprise: a laser source (22), a Peltier element (24) and a digital control (23) wherein the measurement elements are thermally coupled to the wall of the housing (21) made of heat-conducting material.

Abstract: Examples of a light field metrology system for use with a display are disclosed. The light field metrology may capture images of a projected light field, and determine focus depths (or lateral focus positions) for various regions of the light field using the captured images. The determined focus depths (or lateral positions) may then be compared with intended focus depths (or lateral positions), to quantify the imperfections of the display. Based on the measured imperfections, an appropriate error correction may be performed on the light field to correct for the measured imperfections. The display can be an optical display element in a head mounted display, for example, an optical display element capable of generating multiple depth planes or a light field display.

Abstract: The present invention relates to a metallographic system including a measurement module configured to provide precise differential measurements of a sample after serial sectioning, as well as methods of employing such a module. In particular example, the measurement module provides differential measurement(s) without contacting the surface of a sample, thereby minimizing contamination of the sample surface.

Abstract: A 3D imaging system uses a depth sensor to produce a coarse depth map, and then uses the coarse depth map as a constraint in order to correct ambiguous surface normals computed from polarization cues. The imaging system outputs an enhanced depth map that has a greater depth resolution than the coarse depth map. The enhanced depth map is also much more accurate than could be obtained from the depth sensor alone. In many cases, the imaging system extracts the polarization cues from three polarized images. Thus, in many implementations, the system takes only three extra images—in addition to data used to generate the coarse depth map—in order to dramatically enhance the coarse depth map.

Abstract: The present invention provides a measurement apparatus for measuring a shape of a test surface, comprising an optical system configured to irradiate a measurement point on the test surface and a reference surface with light, and cause test light and reference light reflected to interfere with each other, a detector configured to detect an optical path length difference between the test light and the reference light by using interfering light and a processor configured to determine a position of the measurement point based on a plurality of detection results by the detector, wherein a detection result includes an error which cyclically changes, and the plurality of detection results include n detection results obtained in n states in which optical path lengths of the test light are different from each other by 1/n (n?2) of a cycle of the error.

Abstract: An electronic wafer inspecting method includes: rotating the wavelength transparent wafer, emitting, from a light source coupled with an interferometric device, two light beams, to form, a measurement volume and having a variable inter-fringe distance within the volume, a time signature of a defect intersecting the measurement volume depending on an inter-fringe distance where the defect intersects the volume, the device and the wafer arranged so that the measurement volume extends into a wafer region, collecting the light scattered by the wafer region, emitting a signal representing the variation in the intensity of the collected light per time, detecting in the signal, a frequency of the intensity, the frequency being the time of the passage of a defect through the measurement volume, determining, based on the value of the inter-fringe distance at the location where the defect passes, the position of the defect.

Abstract: A system for determining surface topography of a three-dimensional structure is provided. The system can include an illumination unit configured to output a two-dimensional array of light beams each comprising a plurality of wavelengths. An optical assembly can focus the plurality of wavelengths of each light beam to a plurality of focal lengths so as to simultaneously illuminate the structure over a two-dimensional field of view. A detector and a processor are used to generate data representative of the surface topography of the three-dimensional structure based on the measured characteristics of the light reflected from the structure.

Abstract: An on-line measuring system, a datum calibrating method, a deviation measuring method and a computer-readable medium are provided. The datum calibrating method includes following steps. A work piece is scanned by a scanning unit to obtain a global point cloud data. A local CAD data of the work piece is obtained according to a predetermined range. A local CAD geometric feature of the local CAD data is obtained. A local point cloud data of the global point cloud data is obtained according to a local range corresponding to the predetermined range. A local scanning geometric feature of the local point cloud data is obtained. The local scanning geometric feature and the local CAD geometric feature are compared to obtain at least one spatial freedom limit. A system basis is obtained according to six spatial freedom limits, if the number of the at least one spatial freedom limit reaches six.

Abstract: A system and method for efficiently determining trajectory and/or location of a device (or user thereof). In a non-limiting example, rotation matrix coefficients may be analyzed in conjunction with stepping information to determine device trajectory and/or location. The system and method may, for example, be implemented in a MEMS sensor system, for example comprising a MEMS gyroscope, MEMS accelerometer, MEMS compass and/or MEMS pressure sensor.

Abstract: The present application provides an LTPS multilayered structure, which includes: a first stack layer having a reference pattern structure formed thereon and provided with uniformly distributed first references; and a second stack layer disposed on the first stack layer and having an alignment pattern structure formed thereon and provided with uniformly distributed second references each selectively aligning with one of the first references so that misalignment between the first stack layer and the second stack layer is precisely calculated by markings attached to each of the first references. The present further provides a method for measuring misalignment between a plurality of stack layers in the LTPS multilayered structure.

Abstract: Some embodiments of the invention include a surveying apparatus that includes an optoelectronic distance measuring device having a measuring beam path, a base for placing the surveying apparatus, a support which is mounted on the base such that it is rotatable about a vertical axis, a beam directing unit which is mounted in the support such that it is rotatable about a tilting axis, an angle measurement system for measuring the axial positions, and an actuatable positioning device driving the beam directing unit or the support. In some embodiments the positioning device may include a plurality of coils which are arranged in a positionally fixed manner in the form of a ring about the tilting axis and/or vertical axis, with winding axes which are axially parallel to the tilting axis or vertical axis.

Abstract: A conduit-bending level has a pair of bubble levels oriented in such a manner as to facilitate the bending of conduit in a first plane and a second plane that is perpendicular to the first plane. This bending operation is preferably conducted without having to detach the conduit-bending level from the conduit in order to make the second bend.

Abstract: An imaging tool creates a first image of a scene and a second image of the scene taken after the first image. An RF tag reader receives data from an RF tag associated with the scene. A 3D representation of a change in the scene is created based on the first image, the second image, and the data from the RF tag.

Abstract: An embodiment comprises and apparatus having an image capture device with an image axis and a gyroscope operable to indicate the orientation of the image axis. An embodiment of a capsule endoscopy system comprises an imaging capsule and an external unit. The imaging capsule may comprise an image capture device having an image axis and a gyroscope operable to indicate the orientation of the image axis. The external unit may comprise a gyroscope operable to indicate an orientation of a subject and a harness wearable by a subject and operable to align the gyroscope with the subject. The imaging capsule may send and image to an external unit for processing and display, and the external unit may provide for calculation of the image-axis orientation relative to the body.

Abstract: An electronic device includes a printed circuit board (PCB) having at least one conductive trace thereon. A system on chip (SoC) is mounted on the PCB and electrically coupled to the conductive trace. A sensor chip is mounted on the PCB in a spaced apart relation with the SoC and electrically coupled to the conductive trace such that the sensor chip and SoC are electrically coupled. The sensor chip includes an accelerometer and/or a gyroscope, and a control circuit. The control circuit is configured to receive configuration data as input, acquire data from the accelerometer and/or the gyroscope. The control circuit is also configured to process the data so as to generate a context of the electronic device relative to its surroundings, the processing being performed in using a processing technique operating in accordance with the configuration data, and output the context.

Abstract: A gyroscope including a mass capable of movement due to excitation and a mass capable of movement due to detection, a mechanism applying an excitation signal to the excitation mass in a first direction, a mechanism detecting the movement of the detection mass in a second direction orthogonal to the first direction, a mechanism detecting the movement of the excitation mass in the second direction, and a processor processing detection signals emitted by the mechanism detecting movements of the detection mass and the mechanism detecting movements of the excitation mass in the second direction, to obtain a phase bias, quadrature bias, and amplification factor.

Abstract: A sensor drive includes at least one first seismic mass and an operating apparatus. The operating apparatus is configured to put the first seismic mass into oscillatory motion such that (i) a projection of the oscillatory motion of the first seismic mass onto a first spatial direction is a first harmonic oscillation of the first seismic mass at a first frequency, and (ii) a projection of the oscillatory motion of the first seismic mass onto a second spatial direction oriented at an angle to the first spatial direction is a second harmonic oscillation of the first seismic mass at a second frequency not equal to the first frequency. A method includes operating such a sensor device having at least one seismic mass.

Abstract: An interface for a hollow core fiber is provided that facilitates the direct pigtailing of the hollow core fiber to a port on an electro-optic device. The interface includes an angled face that attaches to the electronic device at an angle that minimizes optical power loss as light propagates from the electronic device to the hollow core fiber.

Abstract: A system, computer-readable medium, and a method to operate a vehicle in a manner that minimizes a cost to travel from an origin to a destination that includes finding the input to a flight control system that minimizes direct operating cost. The approach described herein employs an energy state approximation (ESA).

Abstract: Apparatus and method for using map data of a known route to calibrate an accelerometer to one or more physiological parameters of a user. In one embodiment, the calibration comprises determining a current position of a user; consulting map data to identify a route having a starting and/or ending position within a predefined proximity to the current position, the route having a known length; collecting data with the accelerometer as the user traverses the route; calculating a calibration factor based on one or more physiological qualities specific to the user; and causing the calibration factor to be stored and applied to subsequently collected data from the accelerometer.

Abstract: Techniques for providing instructions to an operator of a sea vessel (301) via a computing device (502, 900, 1000) are described. The computing device (502, 900, 1000) can request, from another computing device (306, 309, 900, 1000), instructions regarding one or more of an intended course and action plan for the sea vessel (301), which can include at least one navigational instruction and/or deployment instruction. The computing device (502, 900, 1000) can send data to a display device (303) to cause a prompt to be displayed. The prompt can include options regarding the at least one instruction.

Abstract: Methods, apparatuses and storage medium associated with navigation service are disclosed. In various embodiments, a method may include collecting, by a client mobile device, ambient barometric pressure information at a current location of the client mobile device. The method may further include providing, by the mobile device, contemporaneous navigation assistance to a user of the mobile device or for a user of the mobile device, assisted by a remote navigation assistance service. Assistance by the remote navigation service is associated with determining the current elevation level, based at least in part on ambient barometric pressure information collected by the client mobile device and by one or more crowdsourced mobile devices at the current location. Other embodiments may be disclosed or claimed.