Abstract: A sheet of silicate glass having a thickness of 2 mm and composed mainly of SiO2, and containing Al2O3, B2O3, Na2O, F, etc., is immersed in a molten salt comprising a mixture of 50 mol % of silver nitrate and 50 mol % of sodium nitrate. Na ions in the surface of the glass are eluted, diffusing Ag ions in the molten salt into the glass. When a laser beam is applied to the glass substrate thus formed, the glass substrate is evaporated or ablated progressively from its surface. The glass substrate is processed to a smooth finish without causing cracking or breakage.

Abstract: A space truss composite panel is excellent in structural mechanics and capable of being efficiently and economically produced. The space truss composite panel has a construction in which a sheet 1 provided with a series of slits 2 is formed into a space framework 3 through a press working. The space framework 3 is provided with a series of polygonal unit lattices in one of its opposite sides and a series of polygonal pyramids in the other of the opposite sides, wherein each of the polygonal unit lattices has an intersection of its adjacent sides 3a, 3a connected with a ridgeline portion 3b of each of the polygonal pyramids, and the space framework 3 has at least one of its opposite sides connected with a board-like member 4.

Abstract: A generally flat rectangular pencil blank made from a composite celluosic and resin material or cross-linking agent includes a longitudinal axis, a first surface and a second surface with a repeatable profile transverse to the longitudinal axis on the first surface of the blank, the profile representing an approximate peripheral shape of a repeated series of longitudinal sections of an outside peripheral portion of a series of parallel elongated pencils, and an integral web between each adjacent pair of the series of longitudinal sections and extending to the second surface. In one embodiment, the second surface further includes a series of spaced parallel longitudinal grooves for reception of pencil cores, formed on the second surface and positioned laterally so as to be aligned to an apex of each repeatable profile. Methods of making the pencil blanks including dies and molds for making the pencil blanks are also disclosed.

Abstract: A microbridge structure includes a thin film section provided to be spaced from a substrate, and a supporting section formed around the thin film section and also spaced from the substrate, for supporting the thin film section. The supporting section is reinforced by a first reinforcement section, and the thin film section is reinforced by a second reinforcement section.

Abstract: A quartz glass component for use in the manufacture of semiconductors is provided. It has a rough surface which is formed by irregular elevated structural elements which extend between a first, higher plane and a second, lower plane. A plurality of the structural elements has a substantially flat top surface extending in the first plane. This surface is bounded on all sides by facet-like, substantially flat, side surfaces which extend between the first and the second planes. The average surface roughness depth R.sub.a lies between 0.1 .mu.m and 10 .mu.m and the size of the structural elements ranges on average between 30 .mu.m and 180 .mu.m. The invention provides a quartz glass component particularly suitable for the adhesion of CVD layers and having a long service life.

Abstract: A glass substrate for a magnetic disk of the present invention is one in which a laser beam is irradiated on a main surface thereby forming a large number of protrusions thereon to form texture thereon, each of said protrusions being formed by a protruded portion having a convex shape, said glass having a composition in which 0.2 to 3 wt % of an oxide of a transition metal is contained and an absorption coefficient with respect to a wavelength of a light at 266 nm being within a range of 0.03 to 2 .mu.m.sup.-1, and by setting the absorption coefficient of the glass with respect to a wavelength of a light at 266 nm within a range of 0.03 to 2 .mu.m.sup.-1 and irradiating a laser beam having a wavelength in a range of ultraviolet rays selectively on the main surface of a glass substrate at predetermined intervals, texture comprising a large number of protrusions formed by protruded portions each having a small diameter and a convex shape is formed.

Abstract: Pocket knife, having at least one side fabricated from a molded plastic material, includes a decorative element, for example a cross, inlaid flush with an outer surface of the side. The decorative element is stamped from a sheet of steel to provide a cross and a square frame which are positioned with respect to each other by two attachments. A greater portion of each attachment is pressed down, by stamping, from a curved first plane occupied by the cross and the frame to a lower second plane under the curved first plane. This greater portion is covered over by the molded plastic material. At least one portion of lateral flanks of the decorative element is disposed at an inclined angle in order to be partially covered over with the molded plastic material. Only one single operation is required for injecting the side of the pocket knife and for inlaying the decorative element in the outer surface of the side of the pocket knife.

Abstract: A method is described for strengthening or restoring strength to a flat brittle oxide substrate which includes the steps of coating the edges of the brittle oxide substrate with a strengthening composition without coating a significate portion of the flat surfaces. The strengthen brittle oxide substrate such as glass and a window containing as the window pane the edge strengthen glass are also provided.

Abstract: A rib of a composite material for a box structure such as an airfoil has, in an integral structure, a web and flanges formed so as to extend along opposite longitudinal side edges of the web. The web is provided with a plurality of parallel first ridges or beads formed so as to extend across the web and to protrude outward from the outer surface of the web, and each of the flanges is provided with a plurality of parallel second ridges formed so as to extend across the flange, to protrude inward from the outer surface thereof and to merge into the corresponding first ridges. The structure eliminates causes of wrinkles and provides an increased strength.

Abstract: The present invention is directed to a compact tape core upon which a pressure-sensitive tape may be wound. The tape core comprises two rectangular-shaped identical halves which may or may not be joined together permanently at one end with a hinge mechanism. Each tape core half has apertures and mounting studs for clamping the two halves together around a winding mandrel so that pressure-sensitive tape may be wound onto the outer surface of the tape core. In certain embodiments of the present tape core, one or both of the outer surfaces of the tape core have an inward or concave shape relative to the horizontal plane and in other embodiments one or both of the outer surfaces exhibit a bulging or convex shape relative to the horizontal plane. Another embodiment of the compact tape core has a keyway with supporting arms disposed in the cavity between the core halves for mounting the core onto a winding mandrel.

Abstract: A laminated air brake tubing includes inner and outer nylon layers with an intermediate fiber reinforcing layer. The tubing further includes one and preferably two layers of high density polyethylene positioned adjacent either of said nylon layers with a protective layer separating the fiber reinforcing layer from the high density polyethylene layer. The protective layer is preferably a thin layer of nylon or nylon alloy. Further, the high density polyethylene layer may include compatibilizing agents preventing delamination. The air brake tubing of the present invention meets the current requirements for air brake tubing, however it is less expensive than currently available air brake tubing.

Abstract: A composite shell which can be used, in particular, in the manufacture of bodies or compartments of flying vehicles used in rocketry or aeronautics, comprises a load-bearing framework formed of intersecting stiffening ribs, and an outer load-bearing shell. Box-shaped cover plates are secured with glue an the cross nodes of the stiffening ribs from the internal surface of the framework, and thin-walled plates are secured at the outer surface of the shell by threaded rod elements that pass through the shell and framework and are connected to the box-shaped cover plates. In one embodiment, the composite shell is formed of a plurality of panels connected together at their abutting edges.

Abstract: A solar heated windshield comprises two matching glass sheets with a hollow interlayer therebetween for inhibiting frost or ice formation on the outer glass sheet by collecting and retaining solar energy within the interlayer. The inner sheet includes a tinted film such that solar energy passing through the windshield is partially deflected into the interlayer to warm the air contained therein. Deflected solar energy may also impinge on or be deflected into a reservoir containing a heat retentive and conductive liquid such as propylene glycol. Air within the interlayer will be warmed repetitively by the heated glycol through the fluid motion of convection. Heat may be transferred by convection to air throughout the interlayer or only to specifically focused areas.

Abstract: A laminated air brake tubing includes inner and outer nylon layers with an intermediate fiber reinforcing layer. The tubing further includes one and preferably two layers of high density polyethylene positioned adjacent either of said nylon layers. The polyethylene layers are cross-linked preferably by irradiation. Further, the high density polyethylene layer may include compatibilizing agents preventing delaminating. The air brake tubing of the present invention meets the current requirements for air brake tubing, however it is less expensive than currently available air brake tubing.

Abstract: A method for leveling and compacting candle wax using is a small, hand held, plastic and wood device to pack or tamp the surface wax of a larger diameter (4') glass-jar candle to an even level.

Abstract: A shoe press belt has both sides coated with a resin layer and one or both layers with side edge portions softer than the middle portion of the resin layer. The hardness of the side edge portions may first decrease stepwise laterally outwardly from the middle portion to a section which overlies the edge of the shoe, and then increase stepwise laterally outwardly to the edge of the belt. A first stepwise reduction in hardness may begin laterally inward of the edge of the wet paper sheet and extend laterally outwardly to the edge of the wet paper sheet, where a second stepwise reduction begins that extends laterally outwardly beyond the edge of the shoe. Laterally outwardly of the second reduction, a stepwise increase in hardness extends to the edge of the belt. Alternatively, each side edge portion may be of a single hardness, less than the hardness of the middle portion, and each side edge portion overlies one of the side edges of the shoe.

Abstract: There is disclosed a spliced web of linerless labels in roll form and a method of making same. The Webs have lines of partial severing along their lengths and the splice is made between two adjacent webs by a frangible tape which enables the labels at the splice to be separated by tearing, and wherein the remainder of the labels are separable by tearing along the transverse lines of partial severing.