A system for controlling an electro-magnetic clutch of an internal combustion engine mounted on a vehicle, which has a drive member secured to a crankshaft of the internal combustion engine, magnetizing coil provided in the drive member, a driven member adjacent to the drive member, and a transmission secured to the driven member having multi-stage change gears. A car speed sensor is provided for ...

Conduit for the treatment of a sliver of textile fibres of a relatively long distance. The conduit for transporting fibre slivers comprises, incorporated internally in the conduit in its downstream part, a helical guide 5 imparting to the sliver some temporary false twist which reinforces its cohesion and resistance. It is used on spinning preparation and spinning machines.

A direct-current arc furnace has a vessel with a floor and a cover, at least two vault electrodes projecting down into the vessel through the cover, and a hearth electrode exposed in the vessel generally in the floor below the vault electrodes. A scrap-metal charge is melted in this furnace by first energizing the vault electrodes with direct-current voltage of opposite polarity while displacing t...

LE DISPOSITIF COMPREND UN CAPTEUR COMPORTANT UN MIROIR 1 COUPLE A DES MOYENS 2, 3 POUR DEPLACER LE MIROIR PAR LES MOUVEMENTS DU COEUR ET DU THORAX DU PATIENT. UN GENERATEUR DE LUMIERE 4 ECLAIRE LE MIROIR 1. DES MOYENS ELECTROOPTIQUES 5 CONVERTISSENT L'INTENSITE DES RAYONS LUMINEUX REFLECHIS PAR LE MIROIR 1 EN UN SIGNAL ELECTRIQUE.

APPLICATION : STETHOSCOPE OPTIQUE POUR LA SYNCHRONISATION ...

Wear parts or cutting tools, in which the part being exposed to wear is essentially an extremely difficultly grindable material (e.g., hard material), but in which the manufacture of the wear part or cutting tool requires considerable grinding operations can, according to the invention, be made better and cheaper forming the wear part or cutting tool of a compound material which is a wear-resistan...

In a parapet portion of a curtain wall, indoor side and outdoor side members of each panel unit mounted at the top of the curtain wall are connected via a connector made of heat-insulating material, and a damp-proofing sheet is mounted so as to extend between the indoor side member and a building body to form a heat-insulating damp-proofing layer, whereby the disadvantages that heat received by a ...

LE PROCEDE DE TRANSFORMATION VISE A PRODUIRE UN FLUIDE COMBUSTIBLE A POUVOIR CALORIFIQUE ELEVE ET CONSISTE A TRAITER LES DECHETS EN PRESENCE D'UN SOLVANT HYDROAROMATIQUE, SOUS PRESSION ATMOSPHERIQUE A UNE TEMPERATURE COMPRISE ENTRE 200 ET 180 C.

COMME SOLVANT HYDROAROMATIQUE, ON PEUT CHOISIR LES TETRALINES, LES NAPHTALENES, LES METHYLNAPHTALENES, LES CREOSOTES, LES ANTHRACENES, LES CHRYSE...

A method of testing security papers with respect to the positions of a safety thread and water marks to detect errors in the paper is performed by a linewise scanning of a finished paper web. The web has at least two point like measuring marks inserted into it in addition to the water marks, whereby impulses which are originated from these measuring marks are evaluated and the sheet width and the ...

1. High-molecular polyester, consisting substantially of chain members of the Formula -(-O-X-O-Y-)- , which in these chain members as member X substantially has the structures see diagramm : EP0064972,P9,F1 or see diagramm : EP0064972,P9,F2 and as member Y substantially has the structure see diagramm : EP0064972,P9,F3 characterized in that the polyester has an inherent viscosity of greater th...

The fiber reinforced cement material suitable for use in preparing molded articles, comprises: (A) 100 parts by volume of a cement component, (B) from 0.5 to 20 parts by volume of polyarylene thioether fibers and (C) from 0.5 to 20 parts by volume of carbon fibers. p

A system for determining the stuck point of pipe in a borehole includes a wireline tool having an exciter coil and a detector coil axially spaced from one another. The exciter coil 61 is driven by an oscillator 81 at a preselected low frequency, and the resulting voltage induced into the receiver coil 63 is related to the magnetic permeability of a pipe 60 through which the tool is run. A detector...

Method and apparatus for recording information on a card-shaped optical information recording medium with a light beam and/or for reproducing information recorded on the medium. The apparatus includes a device for irradiating the medium with a light beam, a device for causing relative reciprocal movement between the medium and the light beam, and a device for terminating or displacing the light be...