Abstract: A layer system with a controllable heat emission, includes an IR-transparent carrier substrate, a layer with a controllable IR-transmission, an ion-permeable, IR-reflecting electrode, a solid electrolyte, an ion storage layer, a back electrode. The ion-permeable, IR-reflecting electrode is structured in such a manner that it is provided with non-cohesive openings which are distributed homogeneously over the electrode surface and whose maximal flat dimension is smaller than 10 .mu.m.

Abstract: A half hinge paint masking cover for doors, and/or door frames is provided as a one piece body molded of a rigid thermoplastic resin. The device includes two molded half cavities each cavity being connected by a thin flexible membrane of the molded material. The first cavity area covers the back surface area of the hinge barrel and has two half end shields each of which cover half the edge area of the hinge barrel and the exposed edge area of the hinge plate. The second cavity half covers the front surface half of the hinge barrel and has two end shields which cover half the edge area of the hinge barrel. A portion connected to the second cavity half includes a long flat area which covers the exposed face side of the hinge plate. The two half cavities are secured to each other by folding along the flexible membrane and engulfing the door or frame half hinge until pins projecting from tops on one half engage and protrude through holes which are located on tabs on the other half.

Abstract: A microstrip antenna has an electrically conductive base plate carrying an electrically insulating substrate on top of which are a plurality of radiating patches, the improvement comprises establishing a relatively large spacing between the electrically insulating substrate and the base plate at lateral dimensions larger than lateral dimensions of the patches and in the vicinity of the patches and either through local elevations of the insulating substrate or by local indents in the base plate being vertically aligned with the patches.

Abstract: Carrying structure of an active antenna in the aerospace industry uses basically fiber reinforced synthetic material in which heat conductive elements and/or elements conducting electromagnetic waves (electro, optic) are integrated into that support structure for the antenna.