Abstract: An umbrella type unfoldable antenna reflector net is supported by carrier bs extending radially from a carrier body and by auxiliary ribs extending between adjacent carrier ribs. Bracing wires are connected between the carrier ribs and the auxiliary ribs. The tension of the bracing wires, which in the unfolded state of the reflector net extend substantially in the direction of chords, is adjustable by respective adjustment members so that the bracing tension force has a force component which extends substantially perpendicularly to a plane defined by the unfolded reflector net. The adjustment members permit adjusting the reflector net into a parabolic shape.

Abstract: A connecting element, such as a bearing shell, is secured to and end of an rticle of manufacture having a large length relative to its diameter, by a combination of fiber strands or belts forming at least one loop, the ends of which form slings or bights which are anchored to the article by the turns of an anchoring winding extending around the article and through the slings or bights. The loop with its slings or bights is made simultaneously with the formation of the anchoring winding. This type of operation is possible because the turns of the anchoring winding hold down the fiber strands or belts as they are doubled-up to form the loop, preferably endless loops.

Abstract: A bending spring or similar component made of fiber compound material is so onstructed that the stress on the fiber reinforcing strands is optimized while the stress on the matrix of resinous impregnating material is reduced. For this purpose fiber inserts divide the matrix of suitable binder material which holds unidirectionally extending reinforcing fibers embedded in the matrix. The fiber inserts have a main fiber orientation extending about radially to the longitudinal bending axis of the spring. The fiber inserts may comprise layers of fiber webbings, for example double layers, whereby the fiber orientation in one webbing may differ from the fiber orientation in the other webbing.

Abstract: The present door, such as a motor vehicle door, has a central member extending from the hinges to the lock. The central member carries an interior and an exterior door panel. The central member is a body of compound synthetic hard foam material having embedded therein an energy absorbing element. Additionally, the central member is encased in two shells. This structure is lightweight and yet stiff against shearing and torsion loads as well as impact forces.