An X-ray examination apparatus for examination of composite objects, such as, for example, peripheral examination of patients, comprises, in order to avoid over-radiation of the detection system by radiation passing along the object, a filter that can be adapted to the interstices. Such a filter consists, for example, of a body of radiation-absorbing material having in two directions a varying rad...

The unit has a radiation-sensitive detection system consisting of two detectors, one around the other. The detectors are separated by a ring. A difference in the outputs from the detectors indicates a fault in focussing. The innermost detector is ring-shaped. - The beam is given a ring shape by a conical transparent body in its path between the detection system and the unit's beam splitter. Altern...

1474802 Lead-acid battery GOULD Inc 8 July 1974 [9 July 1973 (2)] 30217/74 Heading H1B Crystal growth between the formed negative and positive plates of a dry-charged lead-acid battery which may occur before activation of the battery by the addition of electolyte thereto, is prevented by treating the plates with a metal sulphate soluble in sulphuric acid or water. The preferred sulphate is of sodi...

PURPOSE:To obtain a storage battery with full portability and without any leakage of liquid by fully impregnating a separator with an electrolyte in which the proper amount of ammonium chloride and silicon dioxide powder are mixed in dilute sulfuric acid and making it semi-dried. CONSTITUTION:For example, an electrolyte is obtained by mixing 20-30g anmmonium chloride and the powder of 30-40g silic...

MAQUINA PARA CORTAR PRODUCTOS EN RODAJAS.COMPRENDE UNA CORREDERA ARTICULADA EN EL CARRITO IMPIDE UNA BASCULACION DEL CARRITO PARA UN AJUSTE DE ESPESOR DE CORTE DISTINTO DE CERO; UNA REGLETA PUEDE SER BASCULADA A UNA PRIMERA POSICION EXTREMA EN LA QUE PERMITE UNA BASCULACION DEL CARRITO; UNA UN/A UNIDA CON LA REGLETA BLOQUEA LA INSTALACION DE DESPLAZAMIENTO DE UNA PLACA DE TOPE PARA UN AJUSTE DE ES...

DISPOSITIVO DE TUBO DE TALON PARA FABRICAR UNA CUBIERTA DE NEUMATICO.COMPRENDE UNA SERIE DE SEGMENTOS CILINDRICOS (13, 14, 15) GUIADOS PARA SU MOVIMIENTO EN DIRECCION RADIAL, CADA UNO DE LOS CUALES PRESENTA DOS PESTAN/AS EN SUS EXTREMOS, PARA VOLVER EL MATERIAL DE CARCASA DE NEUMATICO RADIALMENTE HACIA FUERA ALREDEDOR DE ELEMENTOS DE TALON; ANILLOS DE BLOQUEO DISPUESTOS PARA AJUSTAR UNO SOBRE CADA...

PROCEDIMIENTO PARA ELIMINAR IMPUREZAS INSAPONIFICABLES E INSOLUBLES EN AGUA A PARTIR DE UNA MEZCLA DE CICLOHEXANONA Y CICLOHEXANOL.CONSISTE EN QUE LA MEZCLA DE CICLOHEXANOL Y CICLOHEXANONA ES EXTRAIDA, EN UNA EXTRACCION A CONTRACORRIENTE DE AL MENOS TRES ETAPAS, CON UNA CANTIDAD DE AGUA NEUTRA APROXIMADAMENTE 20 VECES MAYOR EN RELACION A LA CANTIDAD DEL PRODUCTO BRUTO EMPLEADO, A TEMPERATURAS COMP...

A method for producing a ceramic-glass-ceramic seal by microwaving, mixes a slurry of glass sealing material and coupling agent and applies same to ceramic workpieces. The slurry and workpieces are placed together, insulated and then microwaved at a power, time and frequency sufficient to cause a liquid phase reaction in the slurry. The reaction of the glass sealing material forms a chemically dif...

1361658 Separating organophosphorus compounds from dinitriles E I DU PONT DE NEMOURS & CO 2 Nov 1971 [3 Nov 1970] 50915/71 Headings C2P and C2C Organophosphorus compounds are at least partly extracted from solutions thereof in organic dinitriles (which may also contain mononitriles) using a paraffin, cycloparaffin or mixture thereof of b.p. 30-135‹ C., e.g. pentane, hexane, heptane, octane, cyclop...

A pleated fabric is connected between an upper fixed sill and a movable sill. The movable sill is between the upper fixed sill and a lower fixed sill. Two string loops are resiliently secured to the sills and slidably frictionally engaged with the movable sill symmetrical relative to the sills and to a central axis parallel to the direction of movement of the movable sill. The tension in the strin...

A pleated fabric is connected between an upper fixed sill and a movable sill. The movable sill is between the upper fixed sill and a lower fixed sill. Strings are resiliently secured to the sills and slidably frictionally engaged with the movable sill symmetrical relative to the sills. The friction engagement tends to keep the movable sill in place at whatever location the sill is moved regardless...

APARATO DE FOTODESCOMPOSICION POR EXTIRPACION PARA ATACAR FOTOQUIMICAMENTE UNA CAPA BIOLOGICA.COMPRENDE UNA FUENTE (10) DE RADIACION ULTRAVIOLETA DE LONGITUDES DE ONDA MENORES QUE 200 NM, UN ALOJAMIENTO (12) PARA CONECTAR AL HAZ DE RAYOS LASER (14), PUDIENDO BLOQUEARSE MEDIANTE UN OBTURADOR (16). EXISTE UN ESPEJO REFLECTOR (18), ASI COMO UNA LENTE (20) OPCIONAL, DELANTE DE LA CUAL PUEDE SITUARSE U...

METODO PARA DEPOSITAR UNA CAPA DE OXIDO DE ESTAN/O, SOBRE UN SUSTRATO DE VIDRIO, A PARTIR DE COMPUESTOS DE ESTAN/O EN ESTADO GASEOSO.CONSISTE EN PONER EN CONTACTO A ALTA TEMPERATURA Y CON UNA VELOCIDAD DE PROYECCION ENTRE 0,2 Y 0,8 M/S, UN VAPOR QUE CONTIENE MONOBUTIL TRICLORURO DE ESTAN/O Y UN EXCITANTE DE FORMULA XCHF2 CON EL SUSTRATO. SIENDO X UN GRUPO A BASE DE CL, H, BR, C O DE F. EL EXCITANT...

DISPOSITIVO DE ACCIONAMIENTO PARA PERSIANAS ENROLLABLES O SIMILARES.CONSISTE EN: A) SITUAR COAXIALMENTE AL PRIMER PLATO DE MANDO (48) UN SEGUNDO PLATO DE MANDO (52), CUYA SUPERFICIE FRONTAL ESTA SITUADA EN EL PLANO DE LA SUPERFICIE FRONTAL DEL PRIMER PLATO DE MANDO (48), POR LO QUE EL SEGUNDO PLATO DE MANDO (52) ESTA ACCIONADO CON UN NUMERO DE REVOLUCIONES DIFERENTE DEL PRIMER PLATO DE MANDO (48);...

1. Process for improving the surface finish and the fracture behaviour of ceramic articles, wherein an unfinished article is first furnished with a primer, then preheated and electrostatically coated with a plastics powder which forms a lacquer film at raised temperature, characterized in that the unfinished article is cleaned with a silane wash, then preheated to approximately 160 degrees C with ...

An insulation and weatherstripping arrangement and associated method for a rolling door includes an insulation supporting member to support a block of expanded polystyrene or similar insulation inside a vertically extending cavity disposed between a guide track and a wall. Most advantageously, metallic parts disposed on the inside of the door are thermally isolated from metallic parts disposed on ...

This invention relates to a device for shifting ratchet means in wind-up apparatuses which comprise a rotary wind-up drum (1) with one or more pawls adapted to cooperate with the ratchet means (17) to block the rotation of the wind-up drum (1). The wind-up apparatus presents an opening (10) for a means (2) to be wound onto the wind-up drum (1) and is adjustable such that the opening (10) will take...

A polyester having a melt anisotropy, which consists essentially of structural units represented by the following formulae is described. [I] ( OArO)l, [II] [III] and [IV] wherein X is hydrogen, chlorine, methyl, ethyl, propyl, butyl, methoxy, ethoxy, nitro or cyano, Ar is selected from 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene, 4,4'-biphenylene, 3,5,...

A solid lubricant, consisting of solid perfluorocarbons, with linear or substantially linear carbon atoms chain, containing from 10 to 20 carbon atoms and having a value of surface tension ranging from 13 to 15 dyne/cm, is obtained by dimerization or co-dimerization of perfluorocarbonsulphonyl halogenides CnF2n+1SO2X (in which X represents an atom of halogen), having a linear or substantially line...