Stock material or miscellaneous articles – All metal or with adjacent metals – Honeycomb – or with grain orientation or elongated elements...
Patent
1992-07-16
1993-03-09
Zimmerman, John
Stock material or miscellaneous articles
All metal or with adjacent metals
Honeycomb, or with grain orientation or elongated elements...
228181, 228190, 52794, 52806, B32B 312, B32B 330
Patent
active
051926237
ABSTRACT:
Laminated structural panels and the method of producing them involve selection of a desired member of sheets of sheet metal of the desired thickness and material, perforating one or more of the sheets to a desired pattern depending upon characteristics desired such as lightness, stiffness or inclusion of fluid passageways etc., stacking the perforated sheets with imperforate face sheets top and bottom and, with brazing material at the interface between the sheets, subjecting the stack to a temperature high enough to cause melting of the brazing material while maintaining a very high vacuum environment. In an alternative embodiment, one or more imperforate internal sheets may be interleaved between the perforated sheets.
REFERENCES:
patent: 3073268 (1963-01-01), Cole
patent: 3084770 (1963-04-01), Winsing
patent: 3106016 (1963-10-01), Warren
patent: 3110961 (1963-11-01), Mellil et al.
patent: 4035536 (1977-07-01), Morrison
patent: 4465725 (1984-08-01), Riel
Metals Handbook, 9th Ed., vol. 6 "Welding, Brazing and Soldering", American Society for Metals, pp. 1022-1032.
Lockhart Industries
Zimmerman John
LandOfFree
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