Abstract: A mask for masking a component at an annular boundary comprises a wall (90, 92) having an inner first rim portion having a first inner diameter (D1) and an outward rebate (140) adjacent the first rim portion.

Abstract: A mask for masking a component at an annular boundary comprises a wall (90, 92) having an inner first rim portion having a first inner diameter (D1) and an outward rebate (140) adjacent the first rim portion.

Abstract: A mask for masking a component at an annular boundary comprises a wall (90, 92) having an inner first rim portion having a first inner diameter (D1) and an outward rebate (140) adjacent the first rim portion.

Abstract: A mask for masking a component at an annular boundary comprises a wall (90, 92) having an inner first rim portion having a first inner diameter (D1) and an outward rebate (140) adjacent the first rim portion.

Abstract: An exemplary device for spray applications includes a nozzle configured to emit a first fluid stream in a downstream direction away from the nozzle. At least one feed port situated near the nozzle introduces an agent into the first fluid stream to be carried by the first fluid stream in the downstream direction. At least one cleaning port situated near the nozzle emits a second fluid stream in a generally upstream direction toward at least one of the nozzle or the feed port.

Abstract: A plasma spray gun comprises a nozzle, an upstream powder injector, and a downstream powder injector. The upstream powder injector is disposed outside the nozzle and axially adjacent a nozzle outlet. The downstream powder injector is disposed axially downstream of the first upstream powder injector. The downstream powder injector is operative in a first coating mode, and the upstream powder injector is operative in a second coating mode.

Abstract: A method and fixture for holding a part being spray coated at an elevated temperature by placing the part between a base forming an insulating cover and an upper insulation board. The space therebetween forms an area for positioning a part to be sprayed. The cover and board are sized to retain heat in the part at a steady predetermined temperature when the part is spray coated. The part is heated for sufficient time to uniformly bring the part to temperature, followed by applying a spray to coat the part.

Abstract: An exemplary device for spray applications includes a nozzle configured to emit a first fluid stream in a downstream direction away from the nozzle. At least one feed port situated near the nozzle introduces an agent into the first fluid stream to be carried by the first fluid stream in the downstream direction. At least one cleaning port situated near the nozzle emits a second fluid stream in a generally upstream direction toward at least one of the nozzle or the feed port.

Abstract: A plasma spray gun comprises a nozzle, an upstream powder injector, and a downstream powder injector. The upstream powder injector is disposed outside the nozzle and axially adjacent a nozzle outlet. The downstream powder injector is disposed axially downstream of the first upstream powder injector. The downstream powder injector is operative in a first coating mode, and the upstream powder injector is operative in a second coating mode.

Abstract: A method is provided for generating a multiple band ultrawide bandwidth signal. In this method, an ultrawide bandwidth devices provides a first reference signal having a first reference frequency, and a second reference signal having a second reference frequency that is different from the first reference frequency. The device generates a first ultrawide bandwidth signal based on the first reference signal, and a second ultrawide bandwidth signal based on the second reference signal, creating two separate frequency bands. These two signals can be generated form the same base clock signal, allowing for significantly simpler implementation and modification.

Abstract: A portable sensor includes (i) a housing; (ii) one or more sensing devices, such as a video camera and/or a gas sensor (iii) a transmitter, electrically coupled to the sensing device(s) for transmitting a signal generated by the sensing devices; and (iv) a power source electrically coupled to, and for supplying electrical power to, the sensing devices, and the transmitter. The sensor is particularly useful for surveillance, inspections, medical emergencies and a variety of different settings in which remote transmission of inspected images is desired.

Abstract: Apparatus for detection of the presence of signalling tones in telephony is provided wherein the output levels for four band-pass filters in the VF band are processed by means of logic circuits to yield a "tone present" decision. Selection of two critical thresholds permits the apparatus to operate optimally within its environment of trading off talk-off immunity with minimum acceptable signal-to-noise ratio.