Abstract: A valve seat assembly is provided herein. The valve seat may include a ceramic valve seat liner positioned within an upper segment that is proximal to a lower segment. An upper retaining ring may at least partially surround the upper segment.

Abstract: A firearm laser sight alignment assembly includes a laser module for emitting a beam along an optical axis, the laser module having an outer seat. The alignment assembly encompasses a resilient grommet mechanically engaging the outer seat in a first adhesive free interference fit. The grommet includes an external seat sized to form adhesive free interferences fits with a laser cover and the housing, as the laser cover engages the housing to retain the grommet with respect to the housing and the laser cover. Upon operable assembly, the interference fits substantially preclude axial and longitudinal movement between the grommet and the laser module as well as the grommet and the laser cover and housing, while allowing angular movement of the laser module to a desired alignment position.

Abstract: A firearm laser sight alignment assembly includes a laser module for emitting a beam along an optical axis, the laser module having an outer seat. The alignment assembly encompasses a resilient grommet mechanically engaging the outer seat in a first adhesive free interference fit. The grommet includes an external seat sized to form adhesive free interferences fits with a laser cover and the housing, as the laser cover engages the housing to retain the grommet with respect to the housing and the laser cover. Upon operable assembly, the interference fits substantially preclude axial and longitudinal movement between the grommet and the laser module as well as the grommet and the laser cover and housing, while allowing angular movement of the laser module to a desired alignment position.

Abstract: A laser sighting device for a semi-automatic handgun having a recoil spring guide chamber housing a recoil spring surrounding a spring guide. The laser sighting device includes a pulse modulated laser received within the spring guide, having an input and a light output for emitting a pulse modulated laser light aligned with a path of a bullet fired by the handgun; and a sensor for detecting firing of the handgun, having an output coupled to the input of the pulse modulated laser. When the sensor detects the handgun has been fired, the output of the sensor triggers the pulse modulated laser to emit a train of pulses of laser light.

Abstract: A sight assembly for a firearm includes a foregrip removably attachable to the firearm, a first light source disposed within the foregrip, and a different second light source disposed within the foregrip. The assembly also includes a power source electrically connected to the first and second light sources, and a control circuit configured to control activation of the first and second light sources.

Abstract: A handheld target marker is provided, wherein the target marker includes a housing retaining a gas laser, a collimating or focusing lens, a driver and a power supply. The laser produces a thermal infrared beam which can be selectively directed to impinge upon a target. The impinging beam is viewable by a thermal imager. The handheld target marker operates at ambient temperatures and incorporates the driver and power supply necessary for operation of the laser, wherein the beam can be pulsed for enhancing imaging on the thermal imager.

Abstract: A sight assembly removably attachable to a firearm includes a foregrip, a quantum cascade laser disposed within the foregrip, and a power source operably connected to the quantum cascade laser.

Abstract: A handheld target marker is provided, wherein the target marker includes a housing retaining a gas laser, a collimating or focusing lens, a driver and a power supply. The laser produces a thermal infrared beam which can be selectively directed to impinge upon a target. The impinging beam is viewable by a thermal imager. The handheld target marker operates at ambient temperatures and incorporates the driver and power supply necessary for operation of the laser, wherein the beam can be pulsed for enhancing imaging on the thermal imager.

Abstract: A method and apparatus for indexing, searching, and retrieving data from data sets. Data sets may reside in the same database or be distributed across different databases. Data sets, whether within the same or distributed databases, may have the same format or heterogeneous formats. Source data sets are represented with mapping tables and inverted or index tables. Native fields of databases described in source tables are mapped to international or specialized standards. Source data fields that map to the standard field searched upon are identified, and objects satisfying a query's request are identified based upon the standard fields searched. Values are retrieved from the identified objects.

Abstract: A core end plug for mounting a roll of sheet material on a shaft. The plug comprises a cylindrical band of stiffly flexible plastic material having ends defining a longitudinal gap therein. A plurality of radial webs extend inwardly from the band. A pair of the webs are opposite each other and are provided with first and second elongated apertures which define identical acute angles to the diameter of the band. A third web defines third and fourth elongated apertures along a common major axis perpendicular to the diameter. A band is fitted into each end of a roll core and a mounting plate is inserted into each core end plug. A mounting shaft extends through central apertures in the mounting plates and through the fourth aperture in the third web. Pins in the mounting plate are received in the first and second elongated apertures.