|4882823||Superplastic forming diffusion bonding process|
A method is set forth of forming a hollow structure having a varying mass distribution. Two sheets of a diffusion bondable and superplastic formable material are formed with one flat surface and an opposite surface contoured to have a selected mass distri...
|4678115||Method for making layered foil structure|
A method is set forth for forming a unitary structure having a plurality of deformable foils having first and second sides stacked one upon another with the first sides facing in one direction and the second sides in an opposite direction, each of the foi...
|4642863||Manufacturing method for hollow metal airfoil type structure|
A process is set forth for making a structure formed of at least two metallic workpiece sections each formed of a reactive metal. A mandrel having a nonreactive surface is sandwiched between the workpiece sections thereby preventing them from being in con...