Abstract: Open celled membranes from thermoplastic polymers are prepared from foamed polymer melts by extrusion through a die.

Abstract: A roadable aircraft capable of flying as well as road travel. The wings of the roadable aircraft are defined by inner and outer wing panels. The outer wing panels are folded with a fold mechanism that rotates each of the outer wing panels from a substantially horizontal extended flying position to a substantially vertical extended position and then folds each of the outer panels into a direction parallel to the travel direction defined by the fuselage. An operator controlled selectable drive mechanism allows the operator to select either the propeller or drive wheel to receive power from the engine shaft.

Abstract: In accordance with the teachings of the present invention, there is provided a door closure apparatus for covering a single opening in a vehicle body. The apparatus including a first door, a second door and a third door, each door being pivotally supported by hinges which are concealed from view when the first, second, and third doors are in a closed position.