A light emitting element and a photo detector are disposed opposite each other in an outer housing of a centrifuge. When an angle rotor is mounted on a motor shaft, light emitted from the light emitting element is received by the photo detector without being intercepted by the angle rotor and, by the output of the photo detector, a permissible maximum revolving speed of the angle rotor is set high...

An improved READ/WRITE circuit for a memory array of cells arranged in rows and columns, where each cell is coupled to a bit line via the conduction path of a single gating transistor which conducts in the source follower mode for one binary condition. The circuit includes a voltage multiplying circuit having an output at which is selectively produced either a read voltage, or a write voltage of s...

LE PROCEDE CONSISTE A POLARISER POSITIVEMENT LES FIBRES 3 PAR RAPPORT A UNE CATHODE 5, DANS UNE SOLUTION AQUEUSE 2 D'UN ELECTROLYTE CONSTITUE PAR UNE BASE FAIBLE AMINEE.

ON FIXE AINSI A LA SURFACE DES FIBRES DES GROUPES AZOTES QUI AMELIORENT L'ADHERENCE DES FIBRES A LA RESINE DANS UN MATERIAU COMPOSITE FORME DE FIBRES DE CARBONE NOYEES DANS UNE MATRICE DE RESINE SYNTHETIQUE

A first bed for one person has an underframe 1 supported by legs 2A, 2B, between which are mounted extension and retraction members which make it possible to store or to take out a second bed having an underframe 5 mounted on feet which have a variable height in the vertical direction, so that this underframe 5 can be raised to the level of the underframe 1 and so that both can be placed side by s...

SYSTEME DE FREINAGE DESTINE A DES VEHICULES AUTOMOBILES, COMPRENANT UN EMETTEUR DE PRESSION DE FREINAGE QUI EST RELIE AUX FREINS DE ROUE PAR L'INTERMEDIAIRE DE CONDUITES D'AGENT DE PRESSION, COMPRENANT DES CAPTEURS PERMETTANT DE DETECTER DIRECTEMENT OU INDIRECTEMENT LE FONCTIONNEMENT DES FREINS, C'EST-A-DIRE L'EFFET OU LA PRESSION DE FREINAGE, SUR CHACUNE OU SUR L'ENSEMBLE DES ROUES, ET COMPREN...

LE MATERIAU TRANSPARENT A CONTROLER EST EXPLORE PAR UN RAYONNEMENT ELECTROMAGNETIQUE D'UNE SEULE LONGUEUR D'ONDE, REGLEE EN FONCTION DE LA PROFONDEUR DE PENETRATION ET DE CONTROLE DESIREE DU MATERIAU. L'INTENSITE RENVOYEE PAR LES DEFAUTS SE TROUVANT A LA SURFACE OU A L'INTERIEUR DU MATERIAU, EST CAPTEE ET EXPLOITEE. LE RAYONNEMENT PEUT ETRE DE LA LUMIERE VISIBLE OU UNE RADIATION UV OU INFRAROUG...

L'INVENTION CONCERNE UN SYSTEME DE COMMANDE ET DE GUIDAGE DE VEHICULE.

UNE ROUTE DESIREE A, B, C, D POUR LE VEHICULE EST MEMORISEE DANS LE VEHICULE SOUS FORME DE COORDONNEES PAR RAPPORT AU SOL; LES VECTEURS AB, BC, CD ENTRE LES POINTS DE JONCTION SONT DIVISES EN VECTEURS INCREMENTIELS PAR DES POINTS DE REFERENCE SUCCESSIFS ENGENDRES EN AVANT DU VEHICULE T A INTERVALLES REGULIERS; UN SYSTE...

The invention relates to a device for wire guiding an automobile vehicle by passive wire. The subject of the invention is a wire guidance device for an automobile vehicle by passive wire, characterised in that it comprises a wire 5 made of an electrically-conducting material, arranged on the ground along the track which the vehicle 1, 2 has to follow and an active system installed on the vehicle a...

This invention relates to an improved foamable resole resin composition comprising a resole resin, a blowing agent and a surfactant wherein said improvement comprises incorporating a particular resole resin catalyzed with alkaline earth metal hydroxides and neutralized with oxalic acid or its acid salts providing inert insoluble oxalate salts dispersed in said resole. Said salts are sized controll...

An absorbent cellular polymeric material is provided which exhibits enhanced water retentivity and may also exhibit enhanced compressibility. Such a material is provided by foaming the reaction product of a poly(aminoether) and an epoxy resin and quaternizing the resulting reaction product with, for example, an acid. The foam is particularly usable in products for absorbing body fluids.

In a vehicle disc brake a pair of friction pad assemblies are adapted to be applied simultaneously to the respective inboard and outboard faces of each of a pair of relatively fixed, axially spaced, rotatable discs by an actuator assembly. The actuator assembly comprises a pair of first and second rigid clamp assemblies which are relatively movable axially, and an actuator acting between the two c...

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen cont...

A process for obtaining fiber-reinforced foams suitable to be transformed into reinforced solid cellular materials having a density lower than 0.7 kg/l, if inert fillers are not present, and lower than 1 kg/l if inert fillers are present as well, essentially by mechanical incorporation of gas or a mixture of gases into an unsaturated polyester resin containing conventional additives is described. ...

This invention relates to the preparation of a flexible, open cell polyurethane foam which can be rigidized by incorporating an epoxy resin into the mixture prior to foaming and, after forming a flexible foam, adding an epoxy curing agent thereto to cause the epoxy resin to cure thereby rigidizing the previously flexible foam. The flexible foam can be reshaped prior to rigidizing if desired.

The present invention relates to an electronic device for information data intended to be arranged in places open to the public. The device according to the invention includes at least one keyboard 3, at least one central plane 7, at least one display unit 4 situated in proximity to at least one telephone handset 5 and at least one telephone dial 6. The said device is characterised essentially in ...

A composition for the application of coatings on a substrate having a base of acrylic resin, comprising polymethylmethacrylate dissolved in a solvent composed of at least one ketone selected from methylethylketone and diacetone alcohol and of a chlorinated hydrocarbon selected from trichloroethylene and methylene chloride, the ratio of the volume of chlorinated hydrocarbon to the volume of ketone ...

SYSTEME DE FREINAGE AVEC REGULATION DU GLISSEMENT DE FREINAGE, POUR VEHICULES AUTOMOBILES DONT TOUTES LES ROUES SONT MOTRICES ET QUI SONT EQUIPES DE MECANISMES COMPENSATEURS APPELES DIFFERENTIELS POUR COMPENSER LES DIFFERENCES DE LONGUEUR DES TRAJETS PARCOURUS PAR LES ROUES INDIVIDUELLES, L'ACTION COMPENSATRICE DE CES DIFFERENTIELS POUVANT ETRE SUPPRIMEE OU REDUITE PAR DES VERROUS DE DIFFERENTI...

MACHINE DU TYPE COMPRENANT DES TIGES DELIMITANT LE VOLUME DU PROFILE, S'ETENDANT DANS LE SENS LONGITUDINAL DE CELUI-CI ET UNE TETE DE TRICOTAGE DEPOSANT DES FILS AUTOUR DESDITES TIGES ET PERPENDICULAIREMENT A CELLES-CI. LES TIGES SONT DES TIGES CREUSES MINCES 12. UNE MATRICE 9 MAINTIENT LESDITES TIGES CREUSES DE FACON FIXE PARALLELEMENT ENTRE ELLES SUIVANT UNE CONFIGURATION QUI CORRESPOND A LA ...