The process consists in casting an insert in a first mould, in arranging the insert thus cast in a second mould and in casting the part in this second mould around the insert, so as to form a mechanical link between the two castings. The wear-resisting part thus cast advantageously comprises an insert with a high resistance to wear, whilst the rest of the part is made from a more ductile material ...

There are many natural pauses during rotary drilling operations where a portion of the drill string remains stationary. Pauses include drill pipe connections, circulating time, and fishing operations. These pauses are used to obtain formation evaluation measurements that take a long time or that benefit from a quiet environment, as opposed to the naturally noisy drilling environment. Various techn...

PROBLEM TO BE SOLVED: To prevent an increase in the temperature of hot water in a hot water storage tank without stopping a circulation pump even when the temperature of hot water in the hot water storage tank is increased, and to use a heating medium without being deteriorated in a short time. SOLUTION: A temperature regulating valve 24 attached to a side wall in the vicinity of a heat-exchanger ...

PROBLEM TO BE SOLVED: To prevent an increase in the temperature of hot water in a hot water storage tank without stopping a circulation pump even when hot water in a hot water storage tank is increased in temperature, and to use a heating medium without deterioration in a short time. SOLUTION: A first temperature sensor 28 to detect a hot water temperature is mounted on the upper part of a hot wat...

PROBLEM TO BE SOLVED: To enable detection at a scattering angle near in a completely opposite direction to an irradiation light with a high photon quantity density, by providing an optical fiber having a gradient index lens at an end part, and a condenser lens condensing the irradiation light, a scattering light, etc. SOLUTION: A fiber detector measuring a concentration of a suspension, etc., has ...

PROBLEM TO BE SOLVED: To provide a plate by which localization of an additive can be prevented and a utilization factor of an active material can by uniformly kept and whose local softening can be restrained by filling paste obtained by kneading the active material by sticking a carbon additive to surfaces of respective particles of lead powder of a main raw material of the active material, in a b...

PROBLEM TO BE SOLVED: To provide a plate excellent in adhesion of a lattice and an active material even when a punched lattice is used by prearranging a paste layer having density higher than the other part on a lattice surface. SOLUTION: Lead powder containing about 70% of lead oxide made by a ball mill is kneaded with water. These are mixed together in the ratio of about (7:3) in the weight rati...

PROBLEM TO BE SOLVED: To stably provide a lead-acid battery with excellent capacity and cycle performance without loosing a maintenance-free property. SOLUTION: This lead-acid battery has a thin layer constituted of a lead- antimony alloy containing 1.5-7 wt.% of antimony arranged on at least one grating cross section face, and uses a grating made of a lead-calcium-tin alloy and formed by machinin...

PCT No. PCT/CH93/00262 Sec. 371 Date Jun. 29, 1994 Sec. 102(e) Date Jun. 29, 1994 PCT Filed Nov. 17, 1993 PCT Pub. No. WO94/11551 PCT Pub. Date May 26, 1994Method and apparatus for texturing thermoplastic threads. In starting the operation of the texturing device, one or several non-textured yarns can be drawn in more easily and more reliably via a drawing-in yarn guide which guides the at least o...

PCT No. PCT/FR89/00559 Sec. 371 Date Apr. 29, 1991 Sec. 102(e) Date Apr. 29, 1991 PCT Filed Oct. 26, 1989 PCT Pub. No. WO90/04547 PCT Pub. Date May 3, 1990.A package for a liquid which is purified includes a neck with a lock-chamber slidable therein. The lock-chamber includes a purifying substance through which the liquid passes when dispensed. At one end of the lock chamber, a plug is positioned ...

A procedure and an apparatus for the examination, in particular quality inspection, of optical components, in which an image is produced of the respective components to be examined, and defects on the imaged object are detected by image analysis, as well as the integration of this examination procedure into the production of the component. The optical components can be ophthalmic components such a...

PCT No. PCT/SG94/01246 Sec. 371 Date Jul. 18, 1996 Sec. 102(e) Date Jul. 18, 1996 PCT Filed Dec. 22, 1994 PCT Pub. No. WO95/19856 PCT Pub. Date Jul. 27, 1985A driving device for a bending unit for bending-in an edge flange against a workpiece. The bending unit comprises a stand, supporting the driving device, a supporting surface for the workpiece and a linkage system, which supports a bending too...

Methods for preparing metallurgical powders containing an organic lubricant are provided. The powders are prepared by wetting a dry admixture of an iron-based powder, at least one alloying powder, and a first organic lubricant with an organic binding agent that is preferably dissolved or dispersed in a solvent. After removal of the solvent, the dried powder composition is admixed with a second org...

PCT No. PCT/EP94/00383 Sec. 371 Date Oct. 16, 1995 Sec. 102(e) Date Oct. 16, 1995 PCT Filed Feb. 10, 1994 PCT Pub. No. WO94/18265 PCT Pub. Date Aug. 18, 1994A prepolymer composition for producing polyurethane insulating foams from pressure tanks which consists of a prepolymer component with at least one PU prepolymer with a content of NCO groups of 4 to 20 wt % and usual additives, as well as a pr...

PCT No. PCT/EP94/00383 Sec. 371 Date Oct. 16, 1995 Sec. 102(e) Date Oct. 16, 1995 PCT Filed Feb. 10, 1994 PCT Pub. No. WO94/18265 PCT Pub. Date Aug. 18, 1994A prepolymer composition for producing polyurethane insulating foams from pressure tanks which consists of a prepolymer component with at least one PU prepolymer with a content of NCO groups of 4 to 20 wt % and usual additives, as well as a pr...

PCT No. PCT/EP94/00383 Sec. 371 Date Oct. 16, 1995 Sec. 102(e) Date Oct. 16, 1995 PCT Filed Feb. 10, 1994 PCT Pub. No. WO94/18265 PCT Pub. Date Aug. 18, 1994A prepolymer composition for producing polyurethane insulating foams from pressure tanks which consists of a prepolymer component with at least one PU prepolymer with a content of NCO groups of 4 to 20 wt % and usual additives, as well as a pr...

PROBLEM TO BE SOLVED: To connect pipes to each other without any gap by forming a stopper so that its tip protruded inward is provided with side faces which are tilted so as to be gradually thickened from the base part connected to the inner circumferential face in a pipe joint in which the stopper protruded inward is arranged in the approximately central part of the inner circumferential face. SO...

PROBLEM TO BE SOLVED: To obtain high visibility while holding the brightness and contrast of a display without the degradation in the reflectivity of a reflection surface and the transmittance of a liquid crystal layer by forming projecting parts on one substrate and forming reflection means on these projecting parts. SOLUTION: The many projecting parts 21 dispersedly arranged on the glass substra...

PROBLEM TO BE SOLVED: To provide the liquid crystal display device of a translucent type which has high visibility as the liquid crystal display device of a reflection type and has the high color visibility as the liquid crystal display device of a transmission type even in a dark room as the translucent type liquid crystal display device usable as the reflection type in a bright place and as the ...

PROBLEM TO BE SOLVED: To enable bright display with excellent visibility by combining and using a reflection plate having a specific reflected light quantity distribution characteristic and a light diffusion layer. SOLUTION: When the light diffusion reflection plate laminated with the light diffusion layer is irradiated with light from a direction of an incident angle (-&theta ) -45 deg. and the a...