Abstract: A tube of flexible material moving longitudinally undergoes transition between annular cross section and flattened straight cross section, without change in the length of perimeter of its cross sections, by one stage of changing between the annular cross section and a rectangular cross section, and another stage of changing between that rectangular cross section and the flattened cross section through successively longer and narrower rectangular cross sections. The method is applicable to material produced by a circular knitting machine. Preferably there is a polyhedral guide within the tube.
Type:
Grant
Filed:
January 25, 1979
Date of Patent:
February 9, 1982
Assignees:
Institut Textile de France, Agence Nationale de Valorisation de la Recherche (ANVAR)
Inventors:
Jean-Paul Ducol, Jacques Mesny, Julien Warret
Abstract: The method consists of subjecting said muds to a particle size grading to concentrate the lead and zinc contained notably in the fines, and recovering said fraction containing the lead and the zinc, the other fraction being recyclable to the blast furnaces. The invention is useful in the preparation of feed materials for Waelz-Berzelius furnaces.
Type:
Grant
Filed:
July 24, 1980
Date of Patent:
February 2, 1982
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Inventors:
Jean M. Cases, Georges Valence, Olivier Lietard
Abstract: The invention relates to new chemical compounds.The compounds according to the invention are compounds of the following formula ##STR1## in which one of the substituents A and B is hydrogen and the other is the radical --N.dbd.O.These compounds are suitable for use as medicaments.
Type:
Grant
Filed:
June 17, 1980
Date of Patent:
February 2, 1982
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Abstract: An installation for the linear treatment, such as sewing, along a curved edge, of a flexible piece of fabric or other material comprises: a sewing machine; a device for moving the piece along an axis; a work table for supporting the piece during its treatment; and a correcting device comprising: detection means for detecting the presence of the piece 1 in a zone upstream of the point of treatment and situated on one side with respect to the axis of treatment, and re-centering means comprising one part of the work table which is movable in rotation about an axis which is offset with respect to the axis of treatment and a motor controlled by the said detection means for driving the said part in rotation. The invention finds an application with cording machines in particular.
Type:
Grant
Filed:
May 21, 1980
Date of Patent:
January 26, 1982
Assignee:
Agence Nationale de Valorisation de la Recherche
Abstract: For continuous measurement of the linear speed of relative travel of an object 11 in front of a measuring device 10 two fixed zones 21,22 in the path of the object are illuminated by means of two parallel laser beams emitted by a single source 15, images of the two zones illuminated are formed upon one and the same transducer 17 the output signal from which is processed electronically by autocorrelation in order to determine the time of travel of a point on the object in going from one illuminated zone to the other.
Type:
Grant
Filed:
February 28, 1980
Date of Patent:
January 26, 1982
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Abstract: New organo-lithium initiators, their synthesis, and their use. The initiators have the formula: ##STR1## in which R" is either a hydrogen atom or a methyl radical; either n is 1, in which case R'=H and m and p are integers, the sum of which is between 0 and 10 inclusive, or n is 2, R' then being an alkyl radical of 2 to 8 carbon atoms and m=p=o; and R is an alkyl radical of 1 to 4 carbon atoms.The initiators are prepared by reacting compounds of the formula; ##STR2## with an alkyl-lithium RLi in a non-polar solvent in the absence of any polar solvent or complexing agent.The initiators are used to prepare polydienes of high stereoregularity by reacting with a diene, and the polydiene is used to prepare a three-block or star copolymer by reacting with an anionically polymerizable monomer.
Type:
Grant
Filed:
July 3, 1980
Date of Patent:
January 19, 1982
Assignees:
Societe Chimique des Charbonnages-Cdf. Chimie, Agence Nationale de Valorisation de la Recherche (ANVAR)
Inventors:
Pierre Sigwalt, Patrick Guyot, Michel Fontanille
Abstract: Organ prostheses are manufactured starting from a support preformed in the shape of the prosthesis to be formed on which a sol giving on cooling a gel enabling a surface state approximating to that of a liquid-air interface is deposited, a hardenable flexible material compatible with body tissues is deposited thereon and the prosthesis removed from the mould. Ureter, bladder, vascular and cardiac prostheses made by this method are disclosed.
Type:
Grant
Filed:
September 7, 1979
Date of Patent:
January 19, 1982
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Inventors:
Pierre Rey, Jacqueline Leandri, Clement Abbou
Abstract: Process for making a novel ferromagnetic chromium dioxide and rhodium dioxide material in the form of a solid solution Cr.sub.1-x Rh.sub.x O.sub.2 where x is a number between 0 and 0.5.It essentially comprises oxidation, under suitable conditions of temperature and pressure, of hydrated or anhydrous Cr.sub.2 O.sub.3 or of a precursor of Cr.sub.2 O.sub.3, in the presence of (1) an appropriate amount of a compound of rhodium III able to give RhO.sub.2 under reaction conditions and (2) of an oxidizing agent consisting of an oxygenated compound free from metallic cations other than chromium and having, under the reaction conditions, a partial oxygen pressure at least equal to that corresponding, under the same conditions of temperature and pressure, to the equilibria Cr.sub.2 O.sub.3 +1/2O.sub.2 .revreaction.2CrO.sub.2 and Rh.sub.2 O.sub.3 +1/2O.sub.2 .revreaction.2RhO.sub.
Type:
Grant
Filed:
September 22, 1978
Date of Patent:
January 19, 1982
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Inventors:
Gerard Demazeau, Patrick Maestro, Theophile Plante, Michel Pouchard, Paul Hagenmuller
Abstract: This invention relates to a process for manufacturing monocrystalline silicon.According to this process, the fused zone Z is formed on a cylinder (1) of polycrystalline silicon and a film (5) is "drawn" by means of a seed-plate (3). The fused zone Z is obtained by resorting to heating means, notably one or several electron guns whose beam is situated in a plane P.sub.2.By means of this process, monocrystalline silicon is manufactured in the form of tape.
Type:
Grant
Filed:
April 28, 1980
Date of Patent:
January 5, 1982
Assignee:
Agence Nationale de Valorisation de la Recherche
Abstract: Compounds with antitumoral activity corresponding to the formula (I): ##STR1## wherein R'.sub.1 is a hydrogen atom or an alkoxy, acyl, formyl or haloacyl radical; R'.sub.2 is a hydrogen atom or an alkyl radical; R'.sub.3 and R".sub.3 are a hydrogen atom, hydroxyl radical or an alkanoyloxy radical, and together are a carbonyl group, and R'.sub.3 and R'.sub.5 together are an epoxy bridge or a double bond; R'.sub.4 is a hydrogen atom or an alkyloxycarbonyl, hydroxymethyl, alkanoyloxymethyl or acetamido radical; R'.sub.5 and R".sub.5 are a hydrogen atom or a hydroxyl, alkanoyloxyl, ethyl or 2-hydroxyethyl radical; R'.sub.6 is a hydrogen atom or an ethyl, 2-hydroxyethyl or acetyl radical; R.sub.1 is a hydrogen atom or an alkyl, formyl or acyl radical; R.sub.2 is a hydrogen atom or alkoxy radical; R.sub.3 is a hydrogen atom or a hydroxyl or alkanoyloxyl radical, and together with R.sub.4 is an epoxy bridge or a double bond; R.sub.4 is a hydrogen atom or a hydroxyl, alkanoyloxyl radical, and together with R.sub.
Type:
Grant
Filed:
August 20, 1979
Date of Patent:
December 22, 1981
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Inventors:
Nicole Langlois, Yves Langlois, Ratremaniaina Z. Andriamialisoa, Pierre Potieo, Pierre Mangeney
Abstract: A coil for a dynamic eddy current braking system affixed to the lower half of a vehicle wheel by two steel, yoke-shaped, end supports joined by parallel rectilinear arms, with the end supports spaced for clearance from the coil and along with thin non-magnetic sheets defining free enclosures around the coil ends, the supports having holes to inject an elastomer into the free enclosures. Seals limit the elastomer to the flat portions of the coils and plates in the zone of injection of the elastomer are immobilized in relation to the support parallel to rectilinear arms but separable from the inner wall of the support to permit thermal expansion and contraction of the coil and elastomer in the support without loss of the transmission of forces to the support occurring in the course of braking and without exaggerated transfer of forces to the support in the case of considerable heating or cooling and without detachment of the elastomer in the case of a very considerable drop in ambient temperature.
Type:
Grant
Filed:
December 11, 1979
Date of Patent:
December 15, 1981
Assignee:
Agence Nationale de Valorisation de la Recherche
Abstract: Invention concerning an electrochemical generator producing current, the electrolyte 2 of which is constituted by a solid solution of an alkali salt M.sup.+ X.sup.- within a plastic, macromolecular material, constituted by homo and/or copolymers essentially with non-cross-linked chains derived from one or several monomers comprising an heteroatom, notably oxygen or nitrogen. The negative electrode is constituted by a material liable to supply an alkali ion M.sup.+, and the positive electrode is liable to incorporate into itself the metal M corresponding to the ion M.sup.+.
Type:
Grant
Filed:
November 20, 1979
Date of Patent:
December 1, 1981
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Abstract: The invention is concerned with novel polypeptides and processes for the synthesis thereof.It is concerned with compounds having the sequenceX-Gln-Gly-Gly-Yin which Y represents -Ser-Asn and X represents Ser-, Lys-Ser-, Ala-Lys-Ser-, Glx-Ala-Lys-Ser-; Glx representing Pyro-Glu or Gln; and when X represents Glx-Ala-Lys-Ser-, Y may in addition represent -Ser; as well as their derivatives comprising one or two modified amino acids, with the exception of the unmodified compound PyroGlu-Ala-Lys-Ser-Gln-Gly-Ser-Asn.These polypeptides are useful as medicines.
Type:
Grant
Filed:
May 24, 1978
Date of Patent:
November 17, 1981
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Inventors:
Jean-Francois Bach, Mireille Dardenne, Jean-Marie Pleau, Jean Hamburger, Evanghelos Bricas, Jean Martinez, Didier Blanot, Genevieve Auger
Abstract: The invention provides a small-size hermetic refrigeration stage containing helium 3 and easily incorporated in a conventional helium 4 metal cryostat.The stage consists essentially of a metallic enclosure containing a certain volume of helium 3 and having a first receptacle constituting the pumping chamber and consisting a mass of an adsorbing body for the helium 3 at a very low temperature, a second receptacle constituting a condenser for the cooled helium 3 and a duct.The stage of the invention is particularly suited for maintaining the sensitive element of an infrared detector at a temperature of less than 1.degree. K.
Type:
Grant
Filed:
February 19, 1980
Date of Patent:
November 17, 1981
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Abstract: The method comprises measuring the heat transfer between a specimen of the substance in condensed phase and an ambient gas. The heat transfer is detected by measurement of the amplitude of the angular movement of a pencil of light which is directed substantially parallel to the surface of the specimen subjected to energization variable in time, and which passes through an area located close to said surface. The device comprises a specimen support and a monochromator.
Type:
Grant
Filed:
May 21, 1980
Date of Patent:
November 10, 1981
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Inventors:
Jacques Badoz, Albert Boccara, Daniele Fournier born Juillard
Abstract: The present invention relates to a method and installation for supplying a machine for linear treatment such as a sewing machine for joining flexible elements such as textile pieces, said method comprising the steps of gripping at least one flexible element by a gripping zone thereof and placing and maintaining this gripping zone at a predetermined fixed spot by means of a first gripping device (fixed clips); gripping the flexible element by said gripping zone thus positioned by means of a second gripping device (carriage provided with clips); displacing the flexible element by means of the second gripping device up to driver members of the machine for linear treatment.
Type:
Grant
Filed:
April 28, 1978
Date of Patent:
November 10, 1981
Assignee:
Agence Nationale de Valorisation de la Recherche (ANVAR)
Abstract: The present invention relates to an artificial heart which comprises a rotary piston shaped like a trilobar or bilobar hypotrochoid or epitrochoid and a body which defines a cavity which is the rotor casing when the latter is driven both in circular translation of radius e equal to the eccentricity of the trochoid and in rotation about its center with an angular velocity of which the number of revolutions per minute is the same as the pulse of the patient.
Type:
Grant
Filed:
May 3, 1978
Date of Patent:
October 27, 1981
Assignee:
Agence Nationale de valorisation de la Recherche (ANVAR)
Abstract: The measuring head enables the production of measuring signals relating to electrical activity and measuring signals relating to an ionic or physico-chemical activity, notably pH, and is designed to be located on or in parts of a living body, notably on the head of an unborn infant. It comprises an insulating body bearing fastening claws. At the moment of positioning, the insulating body introduces actively an electrode sensitive to the electrical activity and at least one electrode sensitive to an ionic or physical activity. These electrodes are constructed in needle form, body body having also a reference electrode associated with the electrode sensitive to the ionic or physical activity.
Type:
Grant
Filed:
March 19, 1979
Date of Patent:
October 13, 1981
Assignee:
Agence Nationale de Valorisation de la Recherche (Anvar)