The method is intended for pneumatically removing loose particles from the interior of a continuously moving corrugated plastic tube of which the wall is provided with perforations punched therein from outside. During the operation, the tube is subjected to vibration. - Vibration is produced by locally shaking the tube in lateral direction whereby the frequency and/or amplitude is preferably varia...

A process for preparing fiber-reinforced hydraulic composite material having a high mechanical resistance and durability is characterised by treating the hydraulic binder with compounds in solution (for example, carbonates and bicarbonates of ammonia or of alkaline and alkaline earth metals) at variable concentrations from 0.5 to 20 percent by weight and at different treating temperatures in the r...

To follow the changes in impedance of a substance (68) located within a specified investigation zone (56), a bidirectionally focused electromagnetic beam having a pair of foci (12a, 12b) is aimed with one of its foci located adjacent such a zone. A receiver (14) located adjacent the other one of its foci is monitored for electrical changes therein, and such changes are interpreted as indications o...

An electrical connecting device for installing electrical elements such as switches, plug sockets, fuses and the like so that they are recessed in a wall or the like has as the main part a holder which can be mounted on an installation socket which is arranged in a recessed manner in the wall or the like. A connector insert, to which electrical supply leads can be connected, can be fitted to the i...

An improved receptor-reradiator, for use in a surveillance system employing a carrier frequency of UHF or higher in combination with a low frequency electrostatic field signal to be modulated on the carrier signal by the reradiator, is provided by an antenna frame wherein the metallic foil of which it is made is divided into three parts. The first part is U-shape of substantially one width and joi...

A porous ceramic material composed of a sintered porous body of a calcium phosphate compound is described. A multiplicity of capillary void paths having a diameter of 1 to 30 mu m and a multiplicity of pores having a diameter of 1 to 600 mu m are formed in the sintered porous body. At least part of the pores are connected to the exterior space of the sintered porous body through at least a part ...

PURPOSE:To facilitate regulation of temperature in a combustion chamber, to reduce the generation of noxious gas, and to enable quick extinguishment of fire, by forming an air passage between a combustion chamber, formed by a heat resisting metal, and a side wall made of a heat insulating material. CONSTITUTION:The air, required by combustion, is supplied to a solid fuel, with which a combustion c...

PURPOSE:To prevent peeling from occurring to a substrate by coating only the end surface of the center hole part of the disk with a film while rotating the disk and curing the film when two discoid substrates are laminated into the disk. CONSTITUTION:A disk substrate 7 that has an ultraviolet curing resin layer 10 and a recording medium layer 13 formed successively and a protection substrate 15 ar...

PURPOSE:To obtain a wiring, dimensional accuracy thereof is high and resistance thereof is low, by forming the wiring on a package substrate by multilayer wiring consisting of titanium and copper. CONSTITUTION:A wiring 4 is formed as three layer thin-film multilayer wirings consisting of a titanium layer 10 formed on a package substrate 11 after sinterings through the evaporation of a thin-film, a...

PURPOSE:To increase the contact area of a cap and base, and to improve the heat-radiating properties of a package by forming partition walls partitioning mutual pellets to the cap at every pellet or at every group of two or more pellets. CONSTITUTION:Partition walls 9 partitioning each pellet 6 on a base 1 are formed to a cap 7, and the pellets 6 are received in each of pellet receiving recessed s...

PURPOSE:To load semiconductor elements at multistages, and to mount the semiconductor elements with high density by arranging lead sections for an internal wiring in a cavity at two steps or more and forming semiconductor element loading surfaces to the bottom and intermediate position of said cavity. CONSTITUTION:A first semiconductor element 9 is loaded on the bottom of a cavity 8 formed to a ce...

PURPOSE:To enable to prevent electrostatic destruction of a semiconductor element due to contact with the electric charge storing substance of an outside conductor during handling of a semiconductor device, deformation of the outside conductor due to external force, a mutual short-circuiting, damage, etc. by a method wherein the semiconductor device is made to have a construction performed with el...

The present invention relates to a mechanised leg prosthesis for amputees which comprises a knee joint unit 100 formed of at least one front small rod 110 and a rear small rod 130 connecting a support part 150 and an upright 10, an ankle joint unit 50 mounted pivotally on the upright and a return rod 200 articulated on the one hand on the rear small rod 130, and on the other hand on the ankle join...

LE BOITIER SELON L'INVENTION COMPORTE UNE EMBASE 1 PORTANT UN COMPOSANT 3 ET RECOUVERT D'UN CAPOT 2. IL COMPORTE EN OUTRE UN CONDENSATEUR 4 CONNECTE SUR L'EMBASE 1 DE FACON A ETRE SITUE ENTRE LE COMPOSANT 3 ET LE CAPOT 2.

PROCEDIMIENTO PARA LA FABRICACION DE PANELES MULTIHOJA PARA VITRALES, POR CALENTAMIENTO MEDIANTE INDUCCION.CONSISTE EN UNIR LAS HOJAS ENTRE SI A LO LARGO DE LOS BORDES DEL PANEL UTILIZANDO UN MEDIO DE UNION TERMO-ACTIVABLE QUE ES ELECTROCONDUCTOR O ESTA EN CONTACTO CON MATERIAL ELECTROCONDUCTOR, Y QUE ES ACTIVADO IN SITU MEDIANTE EL CALENTAMIENTO POR INDUCCION. SE ALIMENTA UNA SEN/AL DE MUESTRA DE...

PROCEDIMIENTO CONTINUO PARA PRODUCIR POLIMEROS A PARTIR DE MONOMEROS DE OLEFINAS, VINILOS POLARES, DIENOS, ACETILENOS O ALDEHIDOS.COMPRENDE LAS SIGUIENTES OPERACIONES: PRIMERA, SE HACE PASAR CONTINUAMENTE UNA CORRIENTE GASEOSA DE UNO O MAS MONOMEROS FLUIDOS A TRAVES DE UN REACTOR DE LECHO FLUIDIZADO EN PRESENCIA DE UN CATALIZADOR DE POLIMERIZACION, BAJO CONDICIONES REACTIVAS; SEGUNDA, SE EXTRAEN P...

Two co-axial metal pipes (5, 6) with an electrically insulating layer arranged between them, particularly a supply pipeline for electrically-driven underwater pumps, are constructed by first mating a metal pipe (5) with a layer of synthetic resin material; the synthetic resin-coated metal pipe (5) is then inserted into a second metal pipe (6) which has a larger internal diameter, and the second me...

A means of anchoring the stem or other portion of a joint prosthesis inserted within the medullary canal of a bone adjacent a diseased or damaged joint is provided by the present invention, wherein a continuous jacket or a plurality of circumferential rings of elastomeric material are attached to the prosthesis stem. A series of arrays of at least three section of biocompatible rigid material are ...