Fibrous polyolefin nonwoven sheets are bonded and stretched in a continuous, multiple stage process. First, the sheet is heated without significant stretching to a temperature that is close to, but below, the melting temperature of the polyolefin. Then, as the sheet is forwarded to a first stretching stage, the sheet temperature is decreased by 5 DEG to 40 DEG C. and thereafter the sheet is alte...

An abrasive tipped drill of .006 to .125 inch diameter is provided for drilling holes in printed circuit boards. A composite sintered abrasive tip of cemented carbide and diamond or cubic boron nitride is formed such that the carbide can be ground away to expose the abrasive as the cutting surfaces of the drill. A shank of tough material having high transverse rupture strength is provided with a r...

PURPOSE:To reduce the dimension of a frictional clutch and a tightening means, obtaining the sufficient differential restricting force, by constituting a differential device used for a vehicle so that the differential restricting force of the frictional clutch is amplified by a small-sized wonderful gear mechanism with which high amplification rate can be obtained. CONSTITUTION:A differential devi...

PURPOSE:To permit the automized operation of a pretreatment device by a method wherein reproduced gas, becoming excessive upon pressurizing an adsoption tower, is discharged through flow rate control or timer control. CONSTITUTION:The impurity nitrogen of reproduced gas is guided to an adsorption tower 11 through a pipe 15, a reproducing switching valve 3, a reproducing preheater 5 and a reproduci...

PURPOSE:To provide an EL element having good characteristics by forming on a back plate a reflex insulation layer which is flat and smooth on the surface, is dense inside the layer, and contains Ba titanate as chief component. CONSTITUTION:A slurry as mixture of Ba titanate and one or more types of cyanoethyl series binders is applied onto a back plate and dried, and the obtained surface is presse...

PURPOSE:To assemble respective liquid crystal displays while adjusting gaps and to improve the display characteristics and yield by providing the liquid crystal display with a window for gap adjustment. CONSTITUTION:The liquid crystal display consists of a light source 501 which is variable in wavelength, a photoelectric element 502 which detects the intensity of reflected light, a gap adjustment ...

The binding's base has a vertical pivot (7) on which a body rocks. The clamps (11) are held on the body by a horizontal longitudinal rod (13), passing through a hole (10) in the pivot. It is screwed into an adjustable nut (14), sliding in a hole (15) in the front of the body. A spring (16), resting on the nut, presses a piston (17) against the pivot's flat surface. The body is kept centred on the...

(D# 80,969-F) A process for the dissolution of polyurethane foams is disclosed. A polyurethane foam may be dissolved, or removed from a substrate, by contacting the polyurethane foam with 1,2-dialkyl imidazole, alone or as a co-solvent.

An adhesive composition and a method for its use in bonding rigid PVC elements. The adhesive composition comprises: (1) a first dissolved PVC polymer having a K-value of about 58 +/- and a second dissolved PVC polymer having a K-value of about 45 to about 52; (2) at least one cyclic organic solvent; and (3) at least one non-cyclic organic solvent.

PURPOSE:To efficiently provide high critical current density by forming a filament material with a second metal which does not generate any intermetallic compound with a first metal from a practical standpoing, and scattering a ring body in which the first metal is filled in a noncontact disposition. CONSTITUTION:A cylindrically formed body 12 made of a Nb-Ti alloy is disposed outside a Nb rod 11,...

PURPOSE:To provide a tape-like multi-core ceramic superconductor, in which the effect of bending strain is small and the superconducting property is excellent, and a cable using it. CONSTITUTION:Ceramic superconductors 1 to be provided inside of a tape-like metallic body 2 are arranged in the longitudinal direction of the tape-like metallic body 2 longer in the thickness direction of the tape-like...

PURPOSE:To provide a flat type formed stranded wire having high filling factor by reducing outbreaks of twist and entangled twist of a stranded wire, and suppressing any outbreak of disconnection. CONSTITUTION:An inner layer stranded wire 16 is inserted into the through hole 12 of a mandrel jig 10 having a truncated core 11 and in which the through hole 12 defining a rectangularly contoured cross-...

PURPOSE:To provide a manufacturing method of a cable using a ceramic superconductor whose shape does not change and whose superconducting property is not deteriorated even when heat-treated after unheated linear ceramics being disposed around a metal rod or pipe. CONSTITUTION:Heat treatment is performed after the periphery of a linear composite body 1 composed of a metal and raw material substance...

PURPOSE:To provide a Nb3Al superconducting wire of a multi-core structure having high critical current density. CONSTITUTION:A composite body in which a large number of Al-Mg alloy wires are arranged in a Nb matrix is reduced in its surface area to be machined in form of wires and subsequently an electron beam is radiated onto the wires immediately followed by rapidly quenching with a liquid nitro...

PURPOSE:To provide a Nb3Sn superconducting wire, for AC use, of extra fine multi-core structure. CONSTITUTION:A large number of Nb tubes are arranged in a Cu-Ni alloy matrix, Cu-Mn alloy tubes and Sn wires are sequentially accommodated in the Nb tube, followed by a process of surface area reduction so as to produce a wire rod whose external diameter is 0.209mm and filament diameter is 1mum. Such a...

PURPOSE:To provide a superconducting wire having high residual resistance ratio and high critical current density by using a niobium-tube method. CONSTITUTION:A Ta-claded Nb alloy tube is produced by hydrostatic extrusion and roll forming, and subsequently a Cu-claded Sn rod is accommodated in this clad tube while a Cu tube is arranged outside followed by being produced in a composite wire through...

PURPOSE:To enhance workability and property in a manufacturing method of a Nb3Sn superconducting wire using an internal diffusion method. CONSTITUTION:A large number of Sn wires are arranged in the center area of a Cu matrix, further a large number of composite wires formed by successively arranging Cu-Ni alloy tube and Nb tube centering around a Nb-Ti alloy wire are arranged on its outside, while...

PURPOSE:To enhance the property and the workability of a Nb3Al superconducting wire. CONSTITUTION:A large number of Nb tubes are arranged in a Cu-Mn alloy matrix, a composite which accommodates a Al-Ge wire in the Nb tube is reduced in its surface area so as to form a wire rod of 1.0mm in its outside diameter. An Nb3Al superconducting wire of an extra fine multi-cove structure produced by applying...

PURPOSE:To enhance the property and the workability of a Nb3Al superconducting wire. CONSTITUTION:Nb tubes and Cu-Ni alloy tube are arranged outside a composite wire in which a large number of Nb filaments are arranged in Al-GN alloy matrix, wire drawing process is applied to this composite wire to form its outside diameter in 1.0mm and then the outside Cu-Ni alloy is removed by chemical treatment...

PURPOSE:To provide a Nb3Sn superconducting wire for AC use having an extra fine filament by using an internal diffusion method. CONSTITUTION:A large number of composite wire formed hexagonally in its sectional shape in such a way that a large number of Nb wires are arranged in a Cu covered Cu-Mn matrix are arranged outside centering around a large number of Cu-covered Sn wires which has the same c...