PURPOSE:To prevent elongation of grids and enable adhesion of the grids to active material to be retained without applying any excessive force to the grids of plates, by fixing the plates and grids together on the rear surface of a cover through a separator by means of a fixing body arranged below the cover. CONSTITUTION:A fixing body 10 fixes the upside frame 12 of plates in a plate group 11 thro...

PURPOSE:To obtain the titled device providing a high-purity product by improved workability without using active carbon, equipped with a container for ester stock solution after distillation, a tubular ceramic filter and a circulating mechanism to recycle the unfiltered stock solution to the container. CONSTITUTION:An ester stock solution having finished neutralization and distillation in a stock ...

Installation allowing the adjustment of compensating filters without exposure to permanent irradiation. According to one possible embodiment, a radiological image is taken (source, brightness or luminance amplifier) and memorized in an image memory prior to being projected by the video projector onto the patient by through-crossing the filter, this filter having brightness absorption and X-ray abs...

In the manufacture of flexible polyurethane foam from a polyol having at least two reactive hydrogen atoms as determined by the Zerewitinoff method, a polyfunctional isocyanate and a blowing agent using a polymerization or gel catalyst and a blowing catalyst the blowing agent comprises water and from 10 to 90% of methylene chloride, the polymerization or gel catalyst is chosen from organic and ino...

Films which are clear, transparent, non-tacky, easily handleable, mechanically strong and stable at both low and high humidity conditions, and are rapidly soluble in cold and warm water are formed from blends of water soluble polyvinyl alcohol (partially hydrolyzed polyvinyl acetate) and polyacrylic acid, optionally with a plasticizer. The films are also heat sealable and biodegradable.

The invention relates to a device for putting a radioactive source into a formation through which a borehole passes, the device comprises a gun barrel (20), a bullet (25) containing a radioactive source (26) and engaged in the barrel, and explosive means (22, 24) for propelling the bullet towards the formation. The device in accordance with the invention is characterized by the fact that it furthe...

Fine particulate expandable styrene polymers suitable for the production of molded bodies with improved minimum mold dwell times, containing 0.01 to 2.0% by weight, referred to the polystyrene or the total of the polymerized monomers, of polyoctenamer having I values from about 10 to 400 ml/g and trans octylene contents from about 20 to 90%.

A process for the production of free-flowing rubber powders with silicic acid as filler comprises combining a rubber latex with silicic acid filler while stirring in the presence of specific auxiliary agents, adjusting the pH range of the mixture to cause coagulation, and separating and drying the resultant solids wherein the specific auxiliary agents comprise organic surfactants together with col...

A chemical reactor has a convergent conical furnace traversed by fluid, and an inlet for other reagents drawn into the furnace suction. Specifically a Laval nozzle has spherically concave surfaces sepg. upstream and downstream chambers communicating through the nozzle's bore. A gas chamber in the nozzle has symmetrical inlets and outlets directed into the downstream chamber. An axial injector in t...

The jet for dispensing metal and alloys uses high pressure gas to carry the metal. A container (1) holds the liquid alloy (2) passing through a calibrated nozzle (3) to produce a jet (4). The liquid is pre-heated to 140 degrees centigrade above its melting point - for example 1520 degrees centigrade. A tungsten electrode (8) is placed at a distance of 10 mm from the jet, while the second electrode...

DOMAINE DE PRODUCTION PETROLIERE A PARTIR DE GISEMENTS DANS LESQUELS L'EAU EST MELANGEE AUX HYDROCARBURES.

ON CONTROLE LA QUALITE DE SEPARATION EN INCORPORANT A UN PACKER 200 UNE VANNE REGULEE 100 RECEVANT LE DEBIT D'EAU DE REINJECTION APRES SA SEPARATION DANS UN ENSEMBLE 7, LAQUELLE EAU PASSE DANS UN ANALYSEUR A FLUORESCENCE 4. LES RESULTATS DE MESURE SONT TRANSMIS A UNE UNITE DE MICROPR...

A transparent topcoat coating composition is described comprising a thermoplastic or thermosetting resin material containing low pigment to binder ratio of titanium dioxide encapsulated mica particles. When used in a multicoat coating process as a transparent topcoat, an article is produced which not only produces satin finish color effects, but is stable to the elements as well.

Process for stripping from the surface of a support a layer of paint which has formed and hardened thereon, comprising a stage of pretreating the said support before the formation thereon of the layer of paint to be stripped off, the said treatment consisting in applying to the support a covering product chosen from the following products: a pretreatment paint based on vinyl resins, a paint based ...

The measuring apparatus comprises electronic circuits responding to transducer data and either precise readings of the value of a characteristic or driving light-emitting diodes if the measured value of the characteristic exceeds a preset threshold. The apparatus uses one or more microprocessors to control the measurement and display, controlling operation of analogue-to-digital conversion and pro...

The process consists of reducing the size of the nodules by crushing, mixing them with sea-bed sediment and water and pumping the mixture to the surface and separating the nodule granules from the sediment. The process involves using a crusher (52) which reduces the size of the modules to 10-20 mm. A sediment injector mixes the crushed nodules with up to 10-20 per cent sediment with particles meas...

A method of screen printing a hard non-absorbent substrate, such as glass, using a screen with a patterned coating on its surface facing the substrate comprises providing local support between the screen surface and the substrate in one or more areas in which a patterned ink layer of increased thickness is required, thereby enhancing ink retention in the said areas. The method is especially useful...

PCT No. PCT/SE87/00394 Sec. 371 Date Apr. 29, 1988 Sec. 102(e) Date Apr. 29, 1988 PCT Filed Sep. 2, 1987 PCT Pub. No. WO88/01721 PCT Pub. Date Mar. 10, 1988.A high-temperature resistant blast pipe is primarily intended for delivering gas, such as oxygen, and, when appropriate, solid material to metallurgical processes, and incorporates a layer of refractory material comprising a refractory mixture...

PCT No. PCT/SE87/00394 Sec. 371 Date Apr. 29, 1988 Sec. 102(e) Date Apr. 29, 1988 PCT Filed Sep. 2, 1987 PCT Pub. No. WO88/01721 PCT Pub. Date Mar. 10, 1988.A high-temperature resistant blast pipe is primarily intended for delivering gas, such as oxygen, and, when appropriate, solid material to metallurgical processes, and incorporates a layer of refractory material comprising a refractory mixture...

PURPOSE:To make the complicated electrooptical system unnecessary and to make it possible to erase partially, by accumulating the image data to an electric charge quantity through the variation of the surface potential produced by the radiation of electron beams from the first cold cathode group of an electron beam generator. CONSTITUTION:This image display device 1 is composed of an electron beam...