Abstract: A firearm stock with adjustable cheek rest has a base having a base side portion configured to overlay a selected major face of the stock, the base having a base upper portion connected to the side portion and configured to extend over the uppermost crest line to the opposed upper surface away from the selected major face, the base upper portion having a first base upper portion surface configured to overlay the first stock upper surface, and a second base upper portion surface configured to overlay the second stock upper surface, and a cheek piece connected to the base and movable with respect to the base between a lower position and an upper position, and a plurality of intermediate positions. The base side portion, first base upper portion surface, and second base upper portion surface may be adhered to various portions of the stock.

Abstract: A firearm stock with adjustable cheek rest has a base having a base side portion configured to overlay a selected major face of the stock, the base having a base upper portion connected to the side portion and configured to extend over the uppermost crest line to the opposed upper surface away from the selected major face, the base upper portion having a first base upper portion surface configured to overlay the first stock upper surface, and a second base upper portion surface configured to overlay the second stock upper surface, and a cheek piece connected to the base and movable with respect to the base between a lower position and an upper position, and a plurality of intermediate positions. The base side portion, first base upper portion surface, and second base upper portion surface may be adhered to various portions of the stock.

Abstract: A firearm stock with adjustable cheek rest has a base having a base side portion configured to overlay a selected major face of the stock, the base having a base upper portion connected to the side portion and configured to extend over the uppermost crest line to the opposed upper surface away from the selected major face, the base upper portion having a first base upper portion surface configured to overlay the first stock upper surface, and a second base upper portion surface configured to overlay the second stock upper surface, and a cheek piece connected to the base and movable with respect to the base between a lower position and an upper position, and a plurality of intermediate positions. The base side portion, first base upper portion surface, and second base upper portion surface may be adhered to various portions of the stock.

Abstract: An adjustable cheek rest for a rifle stock having a butt with opposed major faces and an uppermost crest line separating opposed first and second stock upper surfaces each angling in opposite directions angularly offset away from a vertical direction associated with the uppermost crest line. The cheek rest comprises a base having a base side portion configured to overlay a selected major face of the stock; the base having a base upper portion connected to the base side portion and configured to extend over the uppermost crest line to the opposed upper surface away from the selected major face; the base upper portion having a first base upper portion surface configured to overlay the first stock upper surface, and a second base upper portion surface configured to overlay the second stock upper surface; and a cheek piece connected to the base and movable with respect to the base between a lower position and an upper position, and a plurality of intermediate positions.

Abstract: A firearm stock with barrel-centering feature has an elongated body defining an elongated receiver channel and an elongated barrel channel, the receiver channel defined in part by a flat floor surface facing in upward direction, the receiver channel defined in part by opposed sidewalls extending above the floor surface, a fastener facility at the rear of the receiver channel operable to connect to the tang of the receiver, and a lateral adjustment facility forward of the fastener facility and operable to secure the receiver in a selected lateral angle of pivot about the fastener facility, such that the barrel is centerable within the barrel channel to avoid the barrel touching the stock. The lateral adjustment facility may include a set screw having an axis parallel to the floor surface of the stock. A pair of set screws opposing each other may secure the action in a selected lateral position.

Abstract: A firearm stock with barrel-centering feature has an elongated body defining an elongated receiver channel and an elongated barrel channel, the receiver channel defined in part by a flat floor surface facing in upward direction, the receiver channel defined in part by opposed sidewalls extending above the floor surface, a fastener facility at the rear of the receiver channel operable to connect to the tang of the receiver, and a lateral adjustment facility forward of the fastener facility and operable to secure the receiver in a selected lateral angle of pivot about the fastener facility, such that the barrel is centerable within the barrel channel to avoid the barrel touching the stock. The lateral adjustment facility may include a set screw having an axis parallel to the floor surface of the stock. A pair of set screws opposing each other may secure the action in a selected lateral position.

Abstract: A seal system includes a face seal rotor ring including a wide sealing face preferably made of tungsten carbide. The stator ring includes a narrower sealing face confronting the rotor ring wide sealing face. The stator ring sealing face is preferably made of polyamide-imide and tapers to narrower widths rearwardly.

Abstract: A firearm stock with barrel-centering feature has an elongated body defining an elongated receiver channel and an elongated barrel channel, the receiver channel defined in part by a flat floor surface facing in upward direction, the receiver channel defined in part by opposed sidewalls extending above the floor surface, a fastener facility at the rear of the receiver channel operable to connect to the tang of the receiver, and a lateral adjustment facility forward of the fastener facility and operable to secure the receiver in a selected lateral angle of pivot about the fastener facility, such that the barrel is centerable within the barrel channel to avoid the barrel touching the stock. The lateral adjustment facility may include a set screw having an axis parallel to the floor surface of the stock. A pair of set screws opposing each other may secure the action in a selected lateral position.

Abstract: An anti-tampering system and method typically featuring a printed circuit board with anti-tamper protection circuitry powered by a power source. Switching circuitry is coupled between the power source and the anti-tamper protection circuitry. A transducer outputs a signal to the switching circuitry electrically connecting the power source to the anti-tamper protection circuitry in response to a tampering event. The switching circuitry otherwise disconnects the power source from the anti-tamper protection circuitry to save power.

Abstract: A seal system includes a face seal rotor ring including a wide sealing face preferably made of tungsten carbide. The stator ring includes a narrower sealing face confronting the rotor ring wide sealing face. The stator ring sealing face is preferably made of polyamide-imide and tapers to narrower widths rearwardly.

Abstract: A seal system includes a face seal rotor ring including a wide sealing face preferably made of tungsten carbide. The stator ring includes a narrower sealing face confronting the rotor ring wide sealing face. The stator ring sealing face is preferably made of polyamide-imide and tapers to narrower widths rearwardly.

Abstract: An anti-tampering system and method typically featuring a printed circuit board with anti-tamper protection circuitry powered by a power source. Switching circuitry is coupled between the power source and the anti-tamper protection circuitry. A transducer outputs a signal to the switching circuitry electrically connecting the power source to the anti-tamper protection circuitry in response to a tampering event. The switching circuitry otherwise disconnects the power source from the anti-tamper protection circuitry to save power.

Abstract: A method of making a piezoelectric fluid moving device, (e.g., a fan or synthetic jet actuator) includes forming at least a first electrode on a base substrate and disposing a spacer frame about the first electrode. A piezoelectric substrate is placed within the frame and over the first electrode. A cover substrate is located on the spacer frame. The cover substrate and spacer frame are laminated to each other and to the base substrate encapsulating the piezoelectric substrate between the cover substrate and the base substrate for a long life device.

Abstract: The invention relates to a method of determining bed velocity and solids circulation rate in a standpipe experiencing a moving packed bed flow, such as the in the standpipe section of a circulating bed fluidized reactor The method utilizes in-situ measurement of differential pressure over known axial lengths of the standpipe in conjunction with in-situ gas velocity measurement for a novel application of Ergun equations allowing determination of standpipe void fraction and moving packed bed velocity. The method takes advantage of the moving packed bed property of constant void fraction in order to integrate measured parameters into simultaneous solution of Ergun-based equations and conservation of mass equations across multiple sections of the standpipe.