Abstract: A method and apparatus for forming corrugated plywood composites is disclosed. The apparatus includes a fixed mold component having a corrugated surface and a series of movable mold components having complemental corrugated surfaces movable toward and away from the fixed surface. Movable mold components are hingedly connected and each such component is associated with a linear motor. By sequentially activating the linear motors each movable mold section is pivotally advanced in a first direction toward the fixed mold component the opposite side of the movable mold component being pivoted toward the fixed mold component when the next adjacent section is advanced into clamping position. High tensile strength low coefficient of friction fabric webs are interposed between the surfaces of the mold and the composite material to be corrugated.

Abstract: The invention relates to a hose comprising an inner plastic tube (2) covered by at least one braiding of filaments disposed in helically crossed layers (5, 6) around the inner tube (2), characterized in that the filaments (7) are made of plastics and are so deformed in their right cross-section that the gap (8) between any two adjacent layers (6a, 6b) which extend in the same direction as one another is at least 100% filled. The invention also relates to a process for the production of the hose.

Abstract: A method for producing a laminated composite structure is provided, the structure including a tubular reinforcement braid, of which the wall is folded over to form corrugations of wrinkles which constitute layers of fibrous material superposed in axial direction, each layer extending from the inside surface to the outside surface of the structure.

Abstract: A process for laminating two or more transparent or translucent substrates or one transparent and one opaque substrate together which comprises the steps of:coating a photohardenable composition on one surface of a first translucent substrate, said photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound and a dye-counter ion complex, said complex being capable of absorbing actinic radiation and producing free radicals which initiate free radical polymerization or crosslinking of said compound, and preferably being photobleachable,applying a second translucent substrate to said photohardenable composition such that said photohardenable composition is interposed between said first translucent substrate and said second translucent substrate, andexposing said substrates to actinic radiation.

Abstract: An apparatus for corrugating a flexible web containing heat softenable fibers comprising two pairs of endless drive chains with paddles mounted to each pair of chains to extend radially outward therefrom. The web is introduced onto the paddles at a point where the paddles are fanned out by passage of the paddles about the arcuate end of the endless chains. The web is folded between the paddles as the separation between the paddles is closed when the paddles move from the arcuate to the straight portion of the endless chains. Heating means soften and bond fibers of adjacent folds of the web together prior to removal of the corrugated web from the paddles.

Abstract: Procedure for preparing a laminated plate structure having an optical fiber situated therein, in which the optical fiber is situated between two respective laminating agent layers, in turn situated between two glass plates, the optical fiber extending out from the structure at opposite ends thereof. Grooves are cut out of the laminating agent layers around both opposite ends of the fiber extending out form the structure, with tubes being inserted over these respective opposite ends of the fiber and into the grooves, so that the fibers can move freely within these respective tubes. Then, the tubes and adjoining plates are adhered to one another, with appropriate compression being applied to form the final laminated structure.

Abstract: A method of connecting two thermoplastic pipes and joint resulting therefrom which includes an electrically conductive insert sleeve with radially extending barbs alternately projecting to the inside and outside diameter of the sleeve into the adjacent fused plastic to achieve the joint.

Abstract: A method of fabricating a rubber double-toothed belt wherein the unvulcanized rubber thereof is firstly heat treated so as to define a first toothed portion of the belt without substantial vulcanization thereof. The preform is then entrained about pulleys and a pair of heated molds engaged with both the toothed portion and the nontoothed outer portion of the belt to place the preform under pressure at a vulcanization temperature for sufficient time to cause the outer rubber portion of the preform to flow outwardly and define the outer teeth of the final belt concurrently with the vulcanization of the double-toothed belt construction. The parameters for controlling the heat treatment to provide the configurational retention without substantial vulcanization of the preform rubber are disclosed.