United Technologies Corporation

Robert D Richard

Christopher W Strock

Steven Lemay

Steven G Lemay

Charles R Beaudoin

A mask for masking a component at an annular boundary comprises a wall () having an inner first rim portion having a first inner diameter (D) and an outward rebate () adjacent the first rim portion.

Spray masking for rotors

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.

Device for spray applications including at least one cleaning port

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.

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Springvale, ME, United States of America

Robert D Richard