Patents Assigned to L'Exploitation Des
  • Machine for splitting slabs by oxygen-cutting
    Patent number: 4315618
    Abstract: For splitting a slab by oxyen-cutting, blow-pipes are mounted on a carriage which is free to move in translation along a girder which is part of a bench driven in translation along rails. The plane of symmetry of the carriage is constantly made to coincide with the plane of symmetry of the slab by means of two sensor runners which bear against the sides of the slab. The runners are carried by two pivotal arms mounted on the carriage and interconnected by a kinematic chain whereby these arms are maintained in a relative position which is symmetrical relative to the plane of symmetry of the carriage.
    Type: Grant
    Filed: April 22, 1980
    Date of Patent: February 16, 1982
    Assignee: Union Siderurgique du nord et de L'est de la France ("USINOR")
    Inventor: Jean Pawlowski
  • Cryogenic storage devices
    Patent number: 4314450
    Abstract: The present invention relates to a device for the cryogenic storing of products. In a tank, canisters are suspended via rods, and these rods rest on the rim of the tank via retaining heads. The invention is applicable to the cryogenic storage of seeds, semen, vegetable substances, etc.
    Type: Grant
    Filed: September 4, 1980
    Date of Patent: February 9, 1982
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventor: Pierre Pelloux-Gervais
  • Process for preparing peroxydisulfates of alkali metals and ammonium
    Patent number: 4310394
    Abstract: A process for preparing peroxydisulfates by electrolysis in a diaphragm cell uses a diaphragm, the active part of which comprises a cation exchange polymer made up of a membrane with a sulfonated polystyrene base resin supported by a polypropylene fabric. The process is applicable to the preparation of peroxydisulfates of alkali metals and of ammonium.
    Type: Grant
    Filed: January 15, 1981
    Date of Patent: January 12, 1982
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean Malafosse, Maurice Rignon
  • Manufacture of metal powder
    Patent number: 4309214
    Abstract: A system for producing metal powder in which a cryogenic fluid in the liquid phase is poured over a metal bath having a vapor pressure of at least 1 mm Hg, and the solid particles suspended in the fluid are separated therefrom and collected.The particles find application in the manufacture of paints, in the treatment of rubber, and in the metallurgical, chemical pharmaceutical and ceramic industries.
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: January 5, 1982
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean Foulard, Gerard Bentz, Jean Galey
  • Cryogenic processes for separating air
    Patent number: 4303428
    Abstract: This invention relates to cryogenic air separation processes. Liquid low-pressure oxygen is pumped to a high pressure and vaporized and heated in thermal exchange with a first high-pressure fluid, and a second intermediate-pressure fluid drawn off and expanded in a turbine.The invention is used in the production of oxygen under high pressure.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: December 1, 1981
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventor: Gerard Vandenbussche
  • Process of making sodium perborate
    Patent number: 4298585
    Abstract: In a process of making sodium perborate, crystallization is performed in the presence of an organic polymer with a high potential content of free carboxylic groups derived from maleic anhydride, selected from the copolymers of maleic anhydride with an organic compound with an ethylene bond. The process is applicable to obtaining sodium perborate crystals of high apparent density of good resistance to abrasion and of limited, relatively high granulometric size.
    Type: Grant
    Filed: April 16, 1980
    Date of Patent: November 3, 1981
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jean Malafosse, Andre Girou, Herve Olivier, Michel Dupont
  • Machines for cooling metal sheets or like products
    Patent number: 4298188
    Abstract: The machine for cooling metal sheets has a lower frame and an upper frame, sets of sheet driving and guiding rolls rotatively mounted in the frames. These frames define an enclosure which surrounds the rolls and in which enclosure a cooling fluid circulates. A system of fluid discharge conduits is connected to the upper frames and a system of fluid discharge conduits is connected to the lower frame. These discharge conduits are disposed in the vicinity of input and output ends of the machine. A cooling fluid recovery tank is provided. At least the discharge conduits connected to the upper frame and located in the vicinity of the input and output ends of the machine are connected to the cooling fluid recovery tank with interposition of a siphon. A priming device is combined with the siphon for creating a depression in the siphon.
    Type: Grant
    Filed: June 4, 1980
    Date of Patent: November 3, 1981
    Assignee: Union Siderurgique du nord et de l'est de la France ("USINOR")
    Inventors: Alfred Germain, Georges Bonamour du Tartre
  • Anti-fouling paint
    Patent number: 4297137
    Abstract: The invention relates to anti-fouling paints and is concerned with anti-fouling paints developed for inhibiting the fixation of marine organisms on structures which are immersed in sea water, the paints including at least one toxic substance uniformly incorporated into a discontinuous solid matrix which is insoluble in sea water and is dispersed in the paint, the matrix being at least partially formed from at least one substance which becomes soluble in sea water under the action of enzymes liberated by the marine organisms to be inhibited and/or by the bacterial film in contact with the surface of the paint.The paints according to the invention provide an effective life which is much longer than that of the known anti-fouling paints.The invention relates to an anti-fouling paint containing at least one toxic substance.
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: October 27, 1981
    Assignee: Centre National pour l'Exploitation des Oceans
    Inventors: Jean-Pierre Sachetto, Sergio Cuccolo
  • New derivatives of 4-amino-5-alkyl sulphonyl orthoanisamides, methods of preparing them and their application as psychotropic agents
    Patent number: 4294828
    Abstract: There are provided certain N-(1-lower alkyl-2-pyrrolidylmethyl)2-lower aly-4-amino-5-lower alkyl sulphonyl benzamides and derivatives thereof which provide surprising antiapomorphine and antiserotonin activity.
    Type: Grant
    Filed: January 18, 1979
    Date of Patent: October 13, 1981
    Assignee: Societe d'Etudes Scientifiques et Industrielles de l'Ile de-France
    Inventors: Michel Thominet, Jacques Acher, Jean-Claude Monier
  • Process and device for controlling the flatness of a cold-rolled metal sheet
    Patent number: 4289005
    Abstract: A process for controlling the flatness of a metal sheet subjected to a cold-rolling operation by the measurement of the tensions in different regions of the width of the sheet. There are at least three regions. The process comprises calculating the sum of the tensions measured in the respective regions, calculating from the result obtained the theoretical tension in each region corresponding to a tension uniformly distributed along the width of the sheet, comparing said theoretical tension with the tension effectively measured in the corresponding region and exerting, if required, the required correcting actions as a function of the results of said comparison.
    Type: Grant
    Filed: April 10, 1979
    Date of Patent: September 15, 1981
    Assignee: Union Siderurgique du Nord et de l'est de la France (USINOR)
    Inventors: Pierre M. Cabaret, Maurice B. Daboust, Pierre R. Engerran
  • Process for impregnating spools of textile with a liquid composition
    Patent number: 4287237
    Abstract: In a process for impregnating a reel of thread in the form of a spool with a liquid resin composition, the thread is arranged on a perforated rigid mandrel so as to form a uniform reel in which the volume of open space approximately corresponds to the desired volume of resin to be impregnated, each spool is then gripped and completely sealed against resin leakage from its ends and, finally, the composition is injected under pressure into the interior of the perforated mandrel whereby there is a homogeneous loss of pressure from the mandrel to the spool's entire exterior curved surface and the resin diffuses uniformly to fill all voids through the spool.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: September 1, 1981
    Assignee: Seperef - TMP Societe pour l'Equipment des Reseaux en Canalisations de Matieres Plastiques
    Inventors: Pierre Prudhomme, Jean-Jacques Lafaye, Raymond Rey
  • Reduction gear
    Patent number: 4282767
    Abstract: A reduction gear comprises a parallelepiped-shaped casing containing a double worm input shaft engaging with two pinions. The input shaft has its worm portions of equal pitch magnitude but of opposite hand and the engaging pinions are one on each side of the shaft. Alternative positions are provided for the two pinions to enable the direction of rotation of the output shaft to be reversed. Each pinion carries an integral spur gear engaging a common ring gear on which the output shaft is carried. There is a square cover to the casing of the reduction gear and this cover has three bosses for use in mounting the reduction gear on a support frame.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: August 11, 1981
    Assignee: Societe pour l'Equipement de Vehicules
    Inventor: Roland R. Guichard
  • Process and installation for automatic ignition of a plasma cutting torch
    Patent number: 4280042
    Abstract: The invention relates to a plasma cutting plant comprising a principal generator feeding a plasma arc between a workpiece and an electrode of a torch comprising a tube, with initial ignition by means of an ignition or striking arc between the electrode and the tube, via the resistor and the contactor. A circuit comprising a resistor and an excitation coil of a relay is installed across the terminals of the contactor. When the torch has been brought to the correct distance from the workpiece, the circuit detects this correct spacing and acts on the feed motor to stop the latter immediately.
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: July 21, 1981
    Assignees: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, La Soudure Autogene Francaise
    Inventors: Jean-Yves Berger, Michel Kostelitz, Bernard Reynaud, Raymond Egee
  • Process for coating the inner wall of a furnace or like apparatus
    Patent number: 4279845
    Abstract: In this process, there is carried out first of all, through orifices formed in the wall of the apparatus and by means of a suitable device, the injection of a first product for filling in the vicinity of the inner face of this wall the porosities of the charge and forming a whole with this charge. After a suitable period of time which ensures that the aforementioned effect is achieved, there is injected a second product which must form the permanent coating under sufficient pressure to be able to slip between the inner wall and the first coat previously formed by taking advantage of the compressibility of the charge. In this way it is possible to spread in a substantially uniform manner on the inner wall of the furnace a product which is capable of constituting the lining.
    Type: Grant
    Filed: October 10, 1979
    Date of Patent: July 21, 1981
    Assignee: Union Siderurgique du Nord et De L'est De La France (USINOR)
    Inventor: Pierre Maisonnave
  • Plant for generating an atmosphere for the heat treatment of metals
    Patent number: 4279406
    Abstract: This invention relates to the generation of an atmosphere for the heat treatment of metals, incorporating an alcohol of the methanol type that decomposes by cracking.A generating plant comprises a nitrogen circuit connected to a pressure source, an alcohol circuit connected to a pressurized tank containing the alcohol in the liquid phase and an injector arranged to feed the alcohol and nitrogen into the furnace in the form of a mist of alcohol within a jet of nitrogen.The invention is applicable in particular to the hardening, heating prior to quenching, and annealing of steels.
    Type: Grant
    Filed: February 20, 1980
    Date of Patent: July 21, 1981
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des procedes Georges Claude
    Inventors: Yves Bourhis, Alain Wermelinger, Michel Kostelitz
  • Welding torch with mechanical and pneumatic cleaning
    Patent number: 4280043
    Abstract: A welding torch having two relatively movable assemblies of elements and an annular chamber therebetween. One of the assemblies is provided with a scraping device to strip strongly adhering metal particles from the lower portion of the inert gas chamber of the torch, and a pneumatic system is operative to then remove these as well as the remaining weakly adhering particles from the entire length of the chamber.
    Type: Grant
    Filed: January 15, 1979
    Date of Patent: July 21, 1981
    Assignee: L'Air Liquide, Scoiete Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Jacques Feix, Frederic Cardot
  • Electronic pinking detector
    Patent number: 4279143
    Abstract: An electronic device for detecting and correcting pinking in an internal combustion engine by changing the ignition displacement of the internal combustion engine which comprises a vibration pick-up mounted on the internal combustion engine providing a signal to a band-pass filter for selecting a frequency band corresponding to pinking vibrations and a comparator, the output of which provides a signal for altering the ignition displacement of the engine and the two inputs which receive the output from the band-pass filter after it has undergone different treatments in two parallel channels, one channel comprising an integrator followed by an amplifier and the second channel preferably comprising an integrator, therebeing provided a gate between the band-pass filter and the two channels, which gate is only open for a predetermined angular zone during operation of the internal combustion engine.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: July 21, 1981
    Assignee: Societe Pour l'Equipement de Vehicules
    Inventor: Serge C. Guipaud
  • Method and apparatus for heat treatment of industrial wastes
    Patent number: 4279208
    Abstract: A method and apparatus for the heat treatment of industrial wastes wherein at least some of the constituent materials of the wastes are subjected to combustion and/or to pyrolysis to produce flue gases and, in some applications, a residue. The supply of an oxygenated combustion-supporting gas to the wastes is regulated as a function of at least one sensed predetermined characteristic of the flue gases. The oxygenated gas may be a mixture of air and substantially pure oxygen, the feed rate of one or both of these being regulated in response to the sensed temperature and/or oxygen content of the flue gases. Such regulation maintains the oxygen content of the flue gases within the range of from 0 to 7%; and the temperature of the flue gases may be maintained from 400.degree. to 1200.degree. C. and, preferably within a range of 50.degree. C. in this region.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: July 21, 1981
    Assignee: L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Paul Guillaume, Pierre Karinthi, Jacques Nicolas
  • Substituted 2,3-alkylene bis (oxy) benzamides and derivatives and method of preparation
    Patent number: 4268512
    Abstract: Novel substituted 2,3-alkylene bis (oxy) benzamides and derivatives thereof are disclosed. Also disclosed is a method for producing said compounds. The compounds have anxiolytic, psychostimulant, disinhibiting and thymoanaleptic properties useful therapeutically in the psychofunctional field, particularly in gastro-enterology, cardiology, urology, rheumatology and gynaecology.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: May 19, 1981
    Assignee: Societe d'Etudes Scientifiques et Industrielles de l'Ile-de-France
    Inventors: Michel Thominet, Gerard Bulteau, Jacques Acher, Claude Collignon
  • Process for treating liquid steel intended in particular for manufacturing machine wire
    Patent number: 4268305
    Abstract: The present invention relates to a process for treating liquid steel for the manufacture of machine wire. All or part of the manganese is added to an extra-mild steel, obtained after refining by any steelmaking process, directly in the production apparatus to obtain the desired manganese content. The steel thus obtained is poured into a first ladle or into another pouring apparatus and carbon is added to the liquid mass in the first ladle and thereafter the metal obtained is poured into a second ladle and a given amount of, first, silicon and then aluminium is added. This process produces a machine wire which is more suitable for wiredrawing.
    Type: Grant
    Filed: March 29, 1978
    Date of Patent: May 19, 1981
    Assignee: Union Siderurgique du Nord et de l'est de la France
    Inventors: Jacques Leclerc, Rene Cormet, Guy Marcus