Abstract: Sealed precision optical assemblies are provided by a mold-in-place (MIP) process wherein a glass preform for a lens or other optical element is molded and sealed directly into a one-piece metal support for the element in a single precision molding step. The product is a sealed glass/metal assembly incorporating a non-interlocking mechanical seal, the seal being hermetic yet free of supplemental sealing materials, and the optical axis of the glass element being at a precise predetermined location and in a predetermined alignment relative to one or more reference surfaces on the metal support.

Abstract: A method for producing ultra-high purity, optical quality, glass articles is disclosed which involves: (1) forming a gel from a silicon-containing organic compound, such as, TEOS; (2) drying the gel to produce granules having a mean particle size of less than about 1 millimeter; (3) fully sintering the granules to produce high purity, artificial sand; (4) casting the artificial sand by conventional techniques, such as, slip casting, to form a high density, porous, green body; (5) drying and partially sintering the green body; (6) fully sintering the green body under vacuum; and (7) hot isostatic pressing ("hipping") the green body. The glass articles produced by the process have higher purity, greater homogeneity, and less IR absorption than existing, commercially available, premium quality, fused silica, glass articles.

Abstract: An offset printing process is utilized for printing an acid resist ink onto both sides of a TV aperture mask. Printing is accomplished after the mask has been formed into an approximate spherical or cylindrical shape, and after a peripheral frame has been attached thereto. The resist ink employed is a pressure-sensitive hot-melt composition which forms an acid resistant film when deposited on the mask.

Abstract: There is disclosed a method of producing an elongated, fiber-reinforced composite having a glass or glass-ceramic matrix and an elongated axial form. A continuous length of fibers is impregnated with glass and the impregnated fiber body consolidated by being pultruded through a die. A combination of axial tension to pultrude the fiber body and sintering pressures exerted by the die result in a composite body of continuous length.

Abstract: A collector printing process is utilized for applying thermoplastic pressure-sensitive inks, corresponding to the color TV phosphors and the black matrix, onto the inner face of the TV panel. Separate inks, formed of inorganic pigments and a thermoplastic pressure-sensitive medium, are each separately patterned. The separate inks are then printed in registration onto a collector to form a composite pattern. Upon completion, the composite pattern is completely transferred to the TV panel by contact of the collector against the inner panel face to form the target.

Abstract: A television bulb is set forth which defines various structural relationships within the bulb construction to enable the manufacture of thin, lightweight TV tubes. The bulb is formed from strengthened glass systems such as laminated sheet glass or chemically strengthened glass, and includes a panel and a funnel having mating outwardly-extending peripheral flange portions which are sealed together. In addition to the peripheral flange portion, the panel includes a central viewing section and sloping sidewall portions which are all tangentially connected together.

Abstract: Disclosed herein is an improved wood burning stove employing a combustion chamber and a flue in communication therewith for removal of exhaust from the chamber with a catalytic converter means being movably mounted in the flue whereby the impedance presented to the exhaust by the converter may be selectively varied so as to minimize the impedance presented by the converter means when additional fuel is added to the stove.

Abstract: Disclosed herein is an improved wood burning stove employing a combustion chamber and a flue for removing exhaust therefrom and also a catalytic converter means for oxidizing oxidizable species in the exhaust. A passageway is provided for bypassing the exhaust around the catalytic converter means, the passageway being controlled by a bypass damper for controlling access to the passageway for varying impedance otherwise presented to the exhaust by the converter, for example, during the addition of fuel to the stove. Such an arrangement minimizes back pressure caused by the converter means.

Abstract: An insulating contoured window is provided for use with an enclosed chamber such as an evacuated flat plate solar heat collector with the contoured solar window being of minimum thickness and supported solely about its peripheral edge portions. The window is contoured in both its longitudinal and transverse directions, such that in its longitudinal direction the window is composed of a plurality of sinusoidal corrugations whereas in its transverse direction the peaks of such corrugations are contoured in the form of paraboloids so that the structure may withstand the forces generated thereon by the atmosphere.

Abstract: A plurality of cellular shapes for honeycomb structures having cells of uniform size and shape are disclosed having movable expansion joint means built into each individual cell structure, which joints can tolerate large strains without breaking.

Abstract: A mask or face plate, having an orifice or opening formed therethrough of desired size and configuration, is positioned against the discharge face of an extrusion die. The mask restricts the flow of extrudable material through the die so that such material will conform to the size and configuration of the opening or orifice formed through the mask. The face of the mask adjacent the discharge face of the extrusion die is provided with an offset or stepped portion which surrounds the orifice formed through the mask and extends radially outwardly therefrom in a plane extending perpendicular to the axis or direction of extrusion. Preferably the offset planar face is radiused at its juncture with the orifice.

Abstract: In an exhaust system for an internal combustion engine, wherein pollutants are removed from the exhaust gases by catalytic conversion, a pinwheel type of deflector positioned within the exhaust flow provides a radially-outwardly deflected swirl flow to the gases as they emanate from an exhaust pipe of one diameter into a canister of larger diameter for housing a catalytic converter. Such flow distribution results in improved catalytic conversion efficiencies obtainable by the converter and reduces its degradation rate inherent with time.