Ronald J Glovan

54842441, Jan 16, 1996

Feb 7, 1994

8/192696

Ronald J. Glovan - Butte MT
John C. Tierney - Butte MT
Leroy L. McLean - Butte MT
Lawrence L. Johnson - Butte MT

MSE, Inc. - Butte MT

F16B 3504
F16B 3716
B23P 1102

411424

A threaded fastener with a shape memory alloy (SMA) coatings on its threads is disclosed. The fastener has special usefulness in high temperature applications where high reliability is important. The SMA coated fastener is threaded into or onto a mating threaded part at room temperature to produce a fastened object. The SMA coating is distorted during the assembly. At elevated temperatures the coating tries to recover its original shape and thereby exerts locking forces on the threads. When the fastened object is returned to room temperature the locking forces dissipate. Consequently the threaded fasteners can be readily disassembled at room temperature but remains securely fastened at high temperatures. A spray technique is disclosed as a particularly useful method of coating of threads of a fastener with a shape memory alloy.

55298095, Jun 25, 1996

Feb 7, 1994

8/192691

Ronald J. Glovan - Butte MT
John C. Tierney - Butte MT
Leroy L. McLean - Butte MT
Lawrence L. Johnson - Butte MT
Gordon L. Nelson - Butte MT
Ying-Ming Lee - Butte MT

MSE, Inc. - Butte MT

B05D 102
B05C 504

427422

A 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.

54598117, Oct 17, 1995

Feb 7, 1994

8/192697

Ronald J. Glovan - Butte MT
John C. Tierney - Butte MT
Leroy L. McLean - Butte MT
Lawrence L. Johnson - Butte MT
David J. Verbael - Butte MT

MSE, Inc. - Butte MT

B05B 100
H05B 300
F24H 100

392479

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.