Patents Assigned to L'Etat Francais, represente par le Delegue General pour l'Armement
  • Patent number: 6857901
    Abstract: A device for connecting high-voltage cables, the device including primary and secondary enclosing insulators, the primary enclosing insulator for mounting on a primary inner conductor of a first cable and the secondary enclosing insulator for mounting on a secondary inner conductor of a second cable, an electric hookup element, a plurality of each of primary and secondary shielding extensions, and a plurality of compressed electric insulators. The electric hookup element is for connecting two such inner conductors, the primary shielding extensions are for enclosing the primary enclosing insulator, and the secondary shielding extensions are for enclosing the secondary enclosing insulator. The primary and secondary shielding extensions are capable of being made integral with each other, and such primary and secondary inner conductors and the electric hookup element are electrically insulated from the primary and secondary shielding extensions by the compressed electric insulators.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: February 22, 2005
    Assignee: L'Etat Francais, represente par le Delegue General pour l'Armement
    Inventor: Bernard Roques
  • Patent number: 6617512
    Abstract: The invention relates to a wall feedthrough, in particular for a metal wall and for a high-voltage coaxial cable, said feedthrough comprising an insulating socket which is affixed to the wall and which includes a central segment, an upstream end and a downstream end, said ends each projecting on its side from the wall. The insulating socket allows passing a cable inner conductor through it, and the feedthrough furthermore includes primary mechanical fasteners at the downstream socket end which cooperate with secondary mechanical fasteners affixed to the sheathed part of the cable. This feedthrough is characterized in that the cable's inner conductor is electrically insulated from the wall by pre-stressed electric insulators.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: September 9, 2003
    Assignee: L'Etat Francais, represente par le Delegue General pour l'Armement
    Inventor: Bernard Roques
  • Patent number: 6180809
    Abstract: A boron and silicon oxynitride obtained by preparing a polyborosiloxane precursor, conducting nitriding pyrolysis of the precursor to obtain an amorphous boron and silicon oxynitride, and optionally conducting additional pyrolysis to obtain a crystallized boron and silicon oxynitride. The polyborosiloxane precursor is prepared by condensation, in the presence of a catalyst, of (2) a polychlorosilane represented by the formula R3R4SiCl2 in which the substituents R3 and R4 are identical or different and each represents a hydrogen atom, a chlorine atom, a linear or branched alkyl or alkenyl or alkynyl radical having 5 or less carbon atoms, or an aryl or aralkyl radical having 6 to 18 carbon atoms, with (2) an alkyl borate represented by the formula (R5O)3B in which R5 represents a linear or branched alkyl radical having 1 to 5 carbon atoms.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: January 30, 2001
    Assignee: L'Etat Francais, represente par le Delegue General pour l'Armement
    Inventors: Jean-Paul Pillot, Marc Birot, Jacques Dunogues, Yves Laurent, Paul L'Haridon, Laurence Bois
  • Patent number: 5939667
    Abstract: A subsea thermoelectric generator has a plurality of flat thermoelectric modules attached concentrically to the outside wall of an undersea line in which petroleum products extracted from a subsea drilling well circulate. The thermoelectric modules are disposed in flat-bottomed pans machined into the outside wall of the line. The pans are sealed by lids made of heat-conducting material and in thermal contact with the thermoelectric modules. Each lid defines, with the walls of the corresponding pan, a peripheral sealed chamber. The various chambers in the pans communicate with each other through passages provided in partitions that separate the pans and are filled with a soft (compliant), preferably non-heat-conducting, resin. At least one of the pans is provided with an orifice closed by a sealed deformable element.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: August 17, 1999
    Assignee: L'Etat Francais represente par le Delegue General pour l'Armement
    Inventors: Philippe Oudoire, Gery Tribou, Tony Mesnil, Gerard Burnouf, Philippe Dubourdieu
  • Patent number: 5702829
    Abstract: The present invention relates to a multilayer material useful as an anti-erosion and anti-abrasion coating, and to a process for producing the multilayer material at low temperatures. The multilayer material comprises a substrate covered with at least one metallic tungsten ductile layer and at least one hard layer of a solid solution of an additional element chosen from carbon or nitrogen or a mixture of carbon and nitrogen in tungsten or a tungsten alloy, the two types of layers ar alternating. The multilayer material is particularly useful as a coating for parts used in aeronautics.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: December 30, 1997
    Assignees: Commissariat a l'Energie Atomique, Turbomeca, L'Etat Francais represente par le Delegue general pour l'Armement
    Inventors: Serge Paidassi, Jacques Ernoult, Michel Brun, Pierre Monge-Cadet, Yves Pauleau, Guy Farges
  • Patent number: 5694374
    Abstract: The invention is directed to the class of submersible electro-acoustic transducers such as double "Tonpilz" transducers, wherein it is desirable to reduce the resonant frequency of the transducers while maintaining a given output power emitted by the transducers. The transducer according to the invention includes at least one horn solid with the end of a motor pillar, a hollow rigid box surrounding the horn and delimiting with the horn a cavity. The cavity communicates via a port with an external fluid, and has determined dimensions and external volume. The transducer further includes a passive radiator made of a material denser than the external fluid. The radiator obturates the port and hangs at a periphery of the port by an elastic material.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: December 2, 1997
    Assignee: L'Etat Francais represente par le Delegue General pour l'Armement
    Inventors: Yves Y. Ripoll, Jacky J. Garcin
  • Patent number: 5579287
    Abstract: The present invention relates to a process and transducer for emitting wide and and low frequency acoustic waves in unlimited immersion depth.The invention is applied to tranducers comprising at least one electro-acoustic motor (1) causing any wall 3 of the said waves to vibrate, and a hollow shell 5 enclosing the said motor 1, and delimiting with the said vibrating wall 3 among others, a cavity 7, characterised in that:at least one opening 5, causing cavity 7 to communicate with ambient medium 4, is made in said shell 5;in at least part of the volume of the said cavity 7, at least one flexible bladder 7, is installed;this bladder 8 is filled with a fluid 9 more compressible than fluid 4.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: November 26, 1996
    Assignee: L'Etat Francais, represente par le Delegue General pour l'Armement
    Inventors: Didier D. M. Boucher, Yves Le Gall
  • Patent number: 5251005
    Abstract: A burner is disclosed which can be used in an apparatus for analyzing a gas omposition by flame spectrophotometry, comprising, disposed coaxially with each other, a tubular body having an open end on which an optical system is mounted coaxially, a sample taking nozzle which extends the body while defining an intake chamber, a collar fast with the body through which passes a tubular chimney, a nozzle for intake of the gas composition which is fitted in the chimney while forming therewith an annular intercalary chamber into which opens a fuel gas intake duct and a capillary tube for intake of the gas composition to be analyzed, this capillary tube being connected to the intake duct at the level of its end situated in the intake chamber.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: October 5, 1993
    Assignees: L'etat Francais, represente par le Delegue General pour l'Armement, Proengin S.A.
    Inventors: Pierre Suzanne, Patrick Bleuse, Gilles Guene, Pierre Clausin
  • Patent number: 5108051
    Abstract: A mechanism is described for attaching a fin to a projectile and for deploying the fin from a stowed position to a deployed position. In the stowed position the fin is parallel to a centrally located axis which extends from the front portion to the rear portion of the projectile. A mounting which is disposed in a bearing and to which the fin is attached permits pivoting of the fin and deployment of the fin in two phases. During the first phase the fin moves from the stowed position to a semideployed positions by rotation in the bearing about an axis normal to the projectile's centrally located axis. During the second phase the fin moves from the semideployed position to the deployed position by pivoting relative to the mounting.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: April 28, 1992
    Assignee: L'Etat Francais represente par le Delegue General pour l'Armement
    Inventors: Evelyne Montet, Bernard Masson, Eric Chotet, Patrick A. G. Dauvergne, Andre Blin, Alain Bonnet, Roger C. Crepin
  • Patent number: 4811307
    Abstract: A Tonpilz type piezoelectric transducer which can be used alternately as a wide-band receiver and an emitter includes a stack of pairs of piezoelectric segments separated by electrodes, the stack being placed between a horn and a countermass. An emitter is connected by a conductor to one of the two electrodes for each segment pair. One pair of segments next to the countermass is separated from the others by an insulator. The two electrodes to either side of the one pair are connected in parallel to a receiver and, through two diodes connected in opposition, to a grounded common conductor.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: March 7, 1989
    Assignee: L'Etat francais represente par le Delegue General pour l'Armement
    Inventors: Charles Pohlenz, Didier Boucher, Bernard Tocquet
  • Patent number: 4747191
    Abstract: A sabot arrangement is produced in accordance with an improved manufacturing method. The sabot arrangement includes a rotational symmetrical sabot body having a central axial bore and radial separating grooves or slots. The radial grooves or slots divide the sabot body into a plurality of equal segments. These slots nearly sever the sabot body into separate segments, so that a material bridge remains near a forward edge and a material bridge remains near a rear edge of the sabot body, which material bridges function as fracture zones.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: May 31, 1988
    Assignees: Rheinmetall GmbH, L'Etat Francais represente par le Delegue General pour l'Armement
    Inventors: Patrick Montier, Pierre A. Moreau, Jean-Claude Sauvestre, Walter Simon, Bernhard Bisping, Peter Wallow, Klaus Gersbach
  • Patent number: 4708077
    Abstract: The present invention concerns hull shapes for a surface effect ship, including a catamaran type supported structure with two side walls (100) connected by a center platform (200), able to operate either as a buoyant displacement vehicle, or as an air cushion supported vehicle, the side walls (100) confining, with two sealing devices (310, 320), the supporting center air cushion (c).
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: November 24, 1987
    Assignee: L'Etat Francais represente par le Delegue General pour l'Armement
    Inventors: Robert Balquet, Robert Baubeau, Jean-Paul Bertrand, Jean-Pierre Guezou, Philippe Carron
  • Patent number: 4616569
    Abstract: An armor-penetrating projectile comprises an outer substantially cylindrically tubular member of great length/diameter ratio and density, centered on an axis, and having an axially throughgoing bore defined by an inner surface and an axially elongated inner member of greater strength and elasticity than the outer member extending axially through the bore the full length of the outer member and having an outer surface in tight radial contact with the inner surface of the outer member at at least a plurality of annular locations spaced along the axis. This inner member can be a bundle of wires that is inserted through the bore after the outer member has been expanded by heat, then twisted and longitudinally prestressed to lock tightly in the outer member.
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: October 14, 1986
    Assignees: Rheinmetall GmbH, L'Etat Francais represente par le Delegue General pour l'Armement Bureau des Brevets et Inventions
    Inventors: Patrick Montier, Jean-Claude Sauvestre, Karl W. Bethmann, Bernhard Bisping, Peter Wallow
  • Patent number: 4575689
    Abstract: The high frequency oscillator includes a piezo-electric crystal (1) which is connected to at least two exciter electrodes (3, 4) and means which make it possible to apply on the one hand to the electrodes (3, 4) electric excitation power for the crystal according to a useful vibratory mode which is selected to determine a frequency reference, and on the other hand additional electric power for exciting the crystal according to an overtone vibratory mode which is distinct from the useful vibrational mode. Means (46, 47) are also provided to regulate the electric excitation power of the crystal according to the useful vibratory mode in a predetermined and constant proportion in relation to the additional electric power. The invention makes it possible to compensate, using the isochronism deficiency stemming from the additional vibration on the useful mode, the indirect amplitude-frequency effect stemming from the additional vibration, and vice versa.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: March 11, 1986
    Assignee: L'Etat Francais represente par le Delegue General pour l'Armement
    Inventor: Jean P. Valentin
  • Patent number: 4357401
    Abstract: A solid electrolyte formed of a cross-linked elastomeric complex material charged with one or more ionizable salts of high ionic conduction.
    Type: Grant
    Filed: April 1, 1981
    Date of Patent: November 2, 1982
    Assignee: L'Etat Francais represente par le Delegue General pour l'Armement
    Inventors: Jean D. Andre, Andreas Killis, Jean-Francois Le Nest, Herve M. Cheradame
  • Patent number: 4339098
    Abstract: Apparatus is described for releasing a storage container from an inflatable upport such as a parachute, comprising a container for holding the inflatable support, an attachment mechanism extending through the container, linear slide means engaging the attachment mechanism and a storage container when tension is applied to the attachment mechanism, and means for holding the attachment mechanism in tension until the inflatable support is inflated, whereby the storage container remains fixed to the inflatable support until tension on said attachment component is relieved.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: July 13, 1982
    Assignee: L'ETAT FRANCAIS, represente par le Delegue General pour l'Armement
    Inventors: Jacques Tardot, Roger Lambert
  • Patent number: 4284224
    Abstract: A rivet apparatus is provided for securing together a first element to a second element made of solid metal. The apparatus comprises a support 3 which is common to the first element and to a hollow charge 4. A metal rivet or nail 5 embedded in the charge of the hollow charge, in the axis of a liner 6 of the hollow charge 4. The support 3 has a surface 7 intended to be applied against a second hard metal element 2 and approximately centered on the focal point F of the hollow charge 4. Upon detonation of the charge, the metal rivet or nail 5 enters the second element 2 thereby binding first and second elements together.
    Type: Grant
    Filed: July 31, 1979
    Date of Patent: August 18, 1981
    Assignee: L'Etat Francais represente par le Delegue General pour l'Armement
    Inventors: Jean-Claude Arnaison, Jean-Claude Lacote