Abstract: A process for making an ion-conducting polymer comprises cross-linking polymers having functional groups such as alkyne groups and azide groups. An example ion-conducting polymer has cross-links including nitrogen-containing heterocycles formed by the reaction between the functional groups, such as 1,2,3-triazole groups formed by a cycloaddition reaction between alkyne and azide groups. The ion-conducting polymer may be used in an ion-electrolyte membrane. Examples include a proton-electrolyte membrane useful for fuel cells.

Abstract: A workpiece structure having a hole therein is repaired by preparing a stack having a first confinement sheet, a first donor sheet, a workpiece structure having a hole therein, a plug of a plug material in the hole, optionally a second donor sheet, and a second confinement sheet. The first confinement sheet, the first donor sheet, the second donor sheet, and the second confinement sheet each overlie the hole. The first confinement sheet and the second confinement sheet each melt at a temperature greater than do the first donor sheet, the plug, and the second donor sheet. The stack is locally heated at the hole using an electrical current source to a temperature sufficiently high to locally melt the first donor sheet, the plug, the second donor sheet, and the workpiece structure. The stack is thereafter cooled to solidify all melted material and form a weldment.

Abstract: A method for storing, accessing and interchanging voluminous confidential documents for review by a plurality of parties and for notifying selected ones of a plurality of receiving computers generally operated by unrelated business organizations of receipt by a predetermined host server of such electronic documents from a sender computer for review. The documents are reviewable by each respective receiving computer over a global communications network. The sender computer and the receiving computers are registered in the host server.

Abstract: A tilt-rotor aircraft capable of vertical/short take-off and landing. The aircraft utilizes a co-axial counter rotating rotor system to provide vertical and horizontal thrust. The fuselage is positioned over the forward half of the rotor in the vertical take-off configuration and the rotors rotate ninety degrees to provide horizontal thrust in the forward flight mode. The aircraft uses conventional flight control surfaces during forward flight and uses cyclic rotor pitch control or a series of control surfaces located in the rotor wash to control the aircraft during vertical flight. One or more engines powering the rotor system provide thrust for the aircraft. The engine(s) can be located in the fuselage or in the wings. The aircraft uses lifting airfoils during forward flight which can include a wing/tail or a canard/wing configuration and uses a conventional tail for directional stability and control.