Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2003-12-11
2010-10-12
Goff, John L (Department: 1791)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S197000, C156S204000
Reexamination Certificate
active
07811407
ABSTRACT:
The invention can be defined in its most general form as a technology for production of corrugated structures from foliated composite materials and can be used for production of sandwich panels used in aircraft construction, shipbuilding, and in building units. Method for production of sandwich panel core from composites including the placing of the blank from reinforcing material, the impregnation of the blank with binder obtaining thus the prepreg, the hardening of the binder in the course of hot-pressing and obtaining of the plane semifinished-blank in the form of a set of relatively rigid parts having the form of the core ridges and detached of one another for some distance, the after-deformation of the semifinished-blank and obtaining the core relief with the required geometrics, and the final hardening of the applied binder involves the impregnation of the reinforcing material with hinder along the full surface of the blank, the heat supply for hardening of the binder in the obtained prepreg within the bounds of said parts, and creation of conditions slowing down the process of hardening along the prepreg zones between said parts. The width of the prepreg zones between the parts having the form of the core ridges is provided in the course of hot-pressing and is not less than double radius of the blank material bending at these parts when shaping the core.
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Akishev Niaz Irekovich
Nikitin Alexandr Vladimirovich
Zakirov Ildus Muhametgaleevich
Airbus
Goff John L
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Otkrytoe Aktsionernoe Obschestvo “Kazansky Nauchno-Isledo
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