PURPOSE:To weld satisfactorily galvanized steel sheets which are galvanized in the thick film state by irradiating a laser beam on the part to be welded to evaporate away the zinc film from said part then welding the part from which the zinc film is removed. CONSTITUTION:The steel sheets 1 formed with the zinc film 2 atop the same are disposed to face each other. A processing head 3 which irradiat...

Hygienic product intended to absorb dampness from biologic fluids, particularly urine and blood, comprising an absorbent mattress arranged on an impervious sheet characterized in that said absorbent mattress is associated to a dampness sensitive element acting as dampness indicator comprised of a super absorbent coloured polymer applied in the form of lines, points, strips or drawings either on th...

a. Front stop intended to hold the toe of the boot on a ski. b. This front stop is of the multidirectional type, that is to say permitting release of the boot in torsion and in a rearward fall. According to the invention, it is equipped with a bolt 20 which is easily accessible and movable into a position in which it immobilises the movable part 4 with the fixed part 3 so as to lock triggering in ...

Safety binding for fastening a boot 7 to a ski 2 comprising: a plate 1 mounted pivotably with respect to the ski 2 via a pivot 3; rear retention means 5 carried by the said pivoting plate 1; front retention means 4 capable of pivoting with respect to the ski 2 against an elastic energisation system 15, 16, characterised in that either the plate 1 carrying the rear retention means 5 or the front re...

A high reliability electrical power system is provided with a microprocessor-based control unit which maintains power output and performs control functions for the system which is driven by the power system. A self locking feature prevents the transmission of potentially erroneous control signals if a component of the system being controlled or the control unit fails. The control unit conducts a s...

Foundry moulds or cores are made by a method comprising mixing a granular refractory material with a potassium alkali phenol-formaldehyde resin binder solution, forming the mixture and curing the formed mixture by gassing with a 1-3C alkyl formate. Cure by gassing with a formate, particularly methyl formate, enables rapid and efficient production of foundry moulds or cores. The formates used have ...

A process for producing a closed cell phenolic-resin foam material comprising a phenolic-resin polymer and a surfactant which is branched, non-ionic, with a hydroxyl value less than 50 achieved by capping excess hydroxyl groups; the material, and a structural laminate employing the material. The material has a thermal conductivity which is low initially and remains low for a long period of time.

A granulate organosilane preparation is made consisting essentially of (a) 30 to 60 weight percent of at least one organosilane of the formula (I) where R1 is an alkyl group with 1 to 3 carbon atoms, R2 is an alkyl or alkoxy group with 1 to 3 carbon atoms, R is an alkylene group with 1 to 5 carbon atoms and x has a value from 2.0 to 6.0, and (b) 70 to 40 weight percent of carbon black...

A water-based coating composition is provided that is suitable for food packaging, such as in coating metal containers. The composition comprises a water-dilutable resin, solubilized with ammonia or an amine, dissolved in water or mixtures of water and an alcohol or an ether alcohol into which is dispersed polyvinyl chloride.

An oriented multi-layer heat sealable film structure comprising a polyolefin film substrate, a layer of a terpolymer of ethylene, propylene and 1-butene, a primer layer on said terpolymer layer and a heat sealable layer on said primer layer.

A well logging optical fibre cable comprises an optical fibre (F) housed in a longitudinally welded stainless tube (T) which is a loose fit around the fibre and in which there is a buoyancy fluid (O) which enables the fibre to more or less float in the tube and thus protects the fibre from damage, particularly when held vertically in lengths up to 5 or even 10Km in a well logging environment. Fig....

This process consists in subjecting the recovery solution in which the metal has been complexed to a first fractionation stage in 5 on a semipermeable membrane whose cutoff threshold is smaller than the molecular size of the complex, then to a second stage in 7 of electrolysis with circulation of the concentrated solution thus obtained, during which the metal is recovered.

The composition consists of an alcoholic solution of poly(vinyl acetate). Sprayed onto the surface to be treated, the composition leaves, as it evaporates, a film preventing water or any aqueous medium from remaining on the treated surface.;

LA COMPOSITION EST CONSTITUEE D'UNE SOLUTION ALCOOLIQUE DE POLY(ACETATE DE VINYLE). PULVERISEE SUR LA SURFACE A TRAITER, LA COMPOSITION LAISSE, EN S'EVAPOR...

L'INVENTION CONCERNE UN PROCEDE POUR FABRIQUER UNE ETOFFE NON TISSEE, FIBREUSE, A CARACTERE ELASTOMERE. ELLE S'ETEND A L'ETOFFE OBTENUE.

LE PROBLEME A RESOUDRE CONSISTE A ACCROITRE LA CAPACITE D'EXTENSION DE L'ETOFFE.

LE PROCEDE EST CARACTERISE EN CE QU'ON COMBINE DES FIBRES TEXTILES AVEC DES FIBRES POUVANT ETRE RENDUES ELASTIQUES, ON LIE AU MOINS QUELQUES-UNES DES FIBRES TEXTILES A...

Process for the treatment of aromatic polyamide fibres, which comprises the stages of treatment of a particular aromatic polyamide fibre with an epoxy compound; adhesion of a particular mixed solution of product of resorcinol-formaldehyde condensation and of rubber latex to the fibre thus treated; then subjection of the fibre to a heat treatment at an elevated temperature. In this way, the adhesiv...