Patent ID: 8313042
Filing Date: 2012-11-20
Classification: B05B,C23C

Abstract:
1. A cold spray gun comprising: a gun housing; a heater assembly arranged in the gun housing for heating a carrier gas, the heater assembly including multiple concentric passages providing a carrier gas passageway and converging to a common outlet, at least one of the passages including a heating element, and at least another of the passages arranged radially outward of the heating element and unheated for insulating the gun housing from heat, wherein the heater assembly includes a ceramic heater core that provides the multiple concentric passages wherein one end of the heater core is received by an aperture of an insulating cone, the insulating cone providing the common outlet, and the heater assembly includes a heater housing at least partially surrounding the heater core and insulating cone; and a supplemental insulating cone arranged between the heater assembly and the heater housing, the heater housing comprising a metallic structure.