Electric resistance heating devices – Heating devices – Continuous flow type fluid heater
Patent
1994-02-07
1995-10-17
Jeffery, John A.
Electric resistance heating devices
Heating devices
Continuous flow type fluid heater
392488, 392473, 219424, 219535, 219538, 219552, 118302, 239135, 338294, 266202, 427422, B05B 100, H05B 300, F24H 100
Patent
active
054598117
ABSTRACT:
An electrically heated metal spray apparatus is provided with a supersonic nozzle. Molten metal is injected into a gas stream flowing through the nozzle under pressure. By varying the pressure of the injected metal, the droplet can be made in various selected sizes with each selected size having a high degree of size uniformity. A unique one piece graphite heater provides easily controlled uniformity of temperature in the nozzle and an attached tundish which holds the pressurized molten metal. A unique U-shaped gas heater provides extremely hot inlet gas temperatures to the nozzle. A particularly useful application of the spray apparatus is coating of threads of a fastener with a shape memory alloy. This permits a fastener to be easily inserted and removed but provides for a secure locking of the fastener in high temperature environments.
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Glovan Ronald J.
Johnson Lawrence L.
McLean Leroy L.
Tierney John C.
Verbael David J.
Jeffery John A.
MSE, Inc.
Tribulski Peter
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