Very fine diameter uniform wires

Details Very fine diameter uniform wires Very fine diameter uniform wires

1981-12-21

1983-02-22

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Foil or filament smaller than 6 mils

427 52, 427120, 427253, C23C 1102

Patent

active

043749011

ABSTRACT:
Disclosed are very fine wires, of the order of 3-6.times.10.sup.-6 m diameter, having cross sections which are uniform within .+-.3%. A common drawn tungsten wire is electrolytically etched to a fine diameter, of the order of 2-4.times.10.sup.-6 m. The variations in cross sectional area along the etched wire are eliminated by selectively vapor depositing tungsten on the surface while using resistance heating. The very fine uniform wires enhance the performance of devices such as fluidic angular rate motion sensors.

REFERENCES:
patent: 3379555 (1968-04-01), Haugh
patent: 3549413 (1970-12-01), McCandless
patent: 3565676 (1971-02-01), Holzl
patent: 3587328 (1971-06-01), Schuemann
patent: 3668017 (1972-06-01), Mandineau
patent: 3887722 (1975-06-01), Douglas
patent: 4020700 (1977-05-01), Lopiccolo et al.
patent: 4098920 (1978-07-01), Miller
Reid & Benner, NBS Tech. News Bull. (1960), vol. 44, No. 2, p. 32ff.
van Tijen, "Iodine Incadescent Lamps" Philips Tech. Rev. (1961/62) vol. 23 n 8/9, pp. 237-242.

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