Hollow metal sphere filled stabilized skin structures and method

Details Hollow metal sphere filled stabilized skin structures and method Hollow metal sphere filled stabilized skin structures and method

1989-07-28

1990-05-15

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428558, 428554, 428570, 428610, 428402, 428403, 419 9, B22F 300

Patent

active

049257404

ABSTRACT:
A high strength, light weight stabilized skin structure having spaced skin sheets and a plurality of hollow metal spheres filling the space between the skins. The spheres and skins are bonded together, resulting in a unitary structure. The spheres typically have outside diameters of from about 0.005 to 0.5 inch, with tall thicknesses of about 0.0005 to 0.005 inch. Spheres of different sizes may be used, with smaller or heavier wall thickness spheres in high load areas, such as insert attachment points, and larger spheres in lightly loaded areas. The spheres preferably have a surface coating of a brazing material and are bonded together and to the skins by furnace brazing.

REFERENCES:
patent: 2602614 (1952-07-01), Cole
patent: 2985411 (1961-05-01), Madden, Jr.
patent: 3212573 (1965-10-01), Valyi
patent: 3773475 (1973-11-01), Madden, Jr.
patent: 4327154 (1982-04-01), Rossmann
patent: 4423097 (1983-12-01), Mons et al.
patent: 4568389 (1986-02-01), Towbin

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