Abstract: In a large high temperature industrial dryer or other such heated enclosure, a structural heat-insulation panel including opposed metallic sheets in generally parallel, spaced-apart planes, one of said sheets being exposed to a higher temperature than the other sheet, and insulation means between such sheets, wherein the improvement comprises panel ends formed of stainless steel of low heat conductivity. Particularly low heat transfer to the lower temperature sheet is obtained by employing embossed stainless steel pieces as said panel ends.

Abstract: A structurally strong heat insulator is depicted in the backing plate and pressure plate regions of an aircraft multiple disc brake assembly. The insulator is constructed from a plurality of perforated metal sheets in order to withstand the large compressive forces experienced during a brake application. The sheets are compiled randomly into an insulating stack which thereby offsets the holes in adjacent sheets. The holes decrease the surface area and the offset increases the heat conduction path, both which reduce the amount of heat cnducted through the stack.

Abstract: An improved composite construction and method for fabrication of equipment having a corrosion resistant liner and an additional erosion resistant liner, in critical areas, on a base metal backing.

Abstract: An improved laminated beam lead for microelectronic devices, e.g., thin film resistors, integrated circuits or the like includes a first metal adhesion layer, e.g. tantalum nitride having disposed thereover a barrier metal such as palladium or platinum, and a bulk beam material, e.g., gold.In accordance with one aspect of the present invention, a transverse discontinuity is formed in the barrier metalization layer such that normal forces applied to the end portion of the composite beam lead remote from the device chip will merely cause the beam lead to deform at the discontinuity rather than delaminating from the chip.

Abstract: A layer of tubes is located in an enclosure using a device comprising a pair of parallel strips arranged one on each side of the layer of tubes in a plane transverse to the axes of the tubes, the strips being connected together by tongues which extend from a respective strip towards the other strip, the tongues being inclined to the strips and adjacent tongues of each strip being inclined in opposite directions.

Abstract: A flexible, low porosity airfoil skin is described which includes multilayer flexible, annealed metallic mesh members consisting of two or three such members selected from the class consisting of nickel, Monel alloy, and stainless steel, the members having a mesh size from 60 to 100, the members interlocked mechanically, and the skin having a thickness reduction in the range from 2.5 to 3.0. Such a flexible, low porosity airfoil skin is useful as a covering structure and is particularly useful as a skin or as a substrate for a cooled non-linear airfoil-shaped body, such as a turbine or compressor blade.

Abstract: A large diameter rocket launch tube comprised of a pair of thin sheets wh are rolled and positioned in concentric relation with the seams disposed in spaced (180.degree.) relation. A pair of reinforcing weld strips are positioned inside the tube adjacent the seams, and a second pair of reinforcing strips are positioned inside the tube intermediate the first pair of strips. A bonding agent is spread on the inner tube and the tubes are assembled and spot welded prior to having the adhesive cured.

Abstract: An all metal, low conductivity, high performance and relatively lightweight, composite structure, in the form of an insulation blanket is operably disposed to be exposed to a high temperature zone, e.g., a high temperature fluid, or on a supporting surface exposed to high temperature. The composite includes two metal skin members spaced from each other by a metallic member functioning as a spacing member. The spacing member is preferably deformed to contact the spaced skin sheets at spaced positions, the space between the skin sheets forming a fluid space which defines a zone of substantially reduced heat transfer by convection. When deformed, the spacing member, or an array of spacers, also provides an elongated path for conduction of heat, and defines a plurality of cavities of limited volume forming stagnant gas pockets. The skin sheets may be perforated to vent the cavities and to provide expansion space for absorbing thermal growth by the metal components of the composite.

Abstract: To prevent flowing of coating material on corrosion-protected sheet steel, such as a zinc coating, when making overlap weld seams, the end portion of at least one of the steel sheets is formed with openings which extend from adjacent the outer edge of the end portion inwardly, to leave projections between the openings, the projections being entirely within the overlap and leaving a short strip of solid material in the overlap region, so that the weld will occur at concentrated hot spots of the material, and contamination of the welding electrodes by the zinc coating material is prevented. The openings may extend clear to the edge in the form of notches, leaving intervening teeth, or they may be punched holes.

Abstract: Described herein are self-supporting structural elements formed of an integral sheet characterized by alternating elevations and depressions which sinusoidally vary about a flat or curved surface of neutrality, the element being suitable for use as a core in composite shell structures. The sinusoidal core element is curvilinearly continuous in passing from the peaks of the characteristic elevations through the surface of neutrality to the floors of adjoining depressions so that stress-raising discontinuities characteristic of prior art core elements are avoided. The core elements, which may be formed of any rigid metal material, e.g., steel, are preferably sinusoidally configured by explosive forming against a suitably configured die. The core elements can be employed singly or in plural, stacked relationship between both parallel and tapered or other irregular boundary layers.