Method of making passage structures

Details Method of making passage structures Method of making passage structures

1974-12-16

1977-12-27

Powell, William A.

Metal fusion bonding

Process

With shaping

29419R, 148 4, 156155, 156168, 156250, 156264, 156296, 156656, 228181, 228193, 264145, 264174, B23P 1700, B32B 310

Patent

active

040650464

ABSTRACT:
A collimated hole structure formed by constricting a plurality of tubular elements each provided with a core for supporting the tubular element during the constricting operation. The bundle of elements is constricted to a point where the elements effectively fuse into a substantially monolithic body. The cores are then removed, leaving a plurality of extremely small diameter, generally parallel passages in a solid body. The tubular elements may be arranged in any desired array, and thus the passages may be provided similarly in any desired array. The passages may have high aspect ratios and may be closely juxtaposed. In one illustrative application, the collimated hole structure is provided with dielectric film and utilized as an anode portion of an electrolytic capacitor. In another illustrative application, the collimated hole structure is utilized as a tip for a drilling device.

REFERENCES:
patent: 1995356 (1935-03-01), Legg
patent: 2499977 (1950-03-01), Scott
patent: 2619438 (1952-11-01), Varian et al.
patent: 2628417 (1953-02-01), Peyches
patent: 3224851 (1965-12-01), Hicks, Jr.
patent: 3275428 (1966-09-01), Siegmund
patent: 3277564 (1966-10-01), Webber et al.
patent: 3291870 (1966-12-01), Allison

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