| Patent Number |
Title Of Patent |
Date Issued |
| 5868606 |
Method of manufacturing a copying cutter |
February 9, 1999 |
| The present invention relates to a copying cutter provided with a cylindrical or conical body having a spherical end, constituting the active portion of the cutter, said end including a plurality of flutes inclined at a determined angle .theta. relative to the longitudinal axis of th |
| 5846611 |
Chemical vapor infiltration process of a material within a fibrous substrate with creation of a |
December 8, 1998 |
| The substrate (30) is placed in an enclosure (34) and is heated by direct electromagnetic coupling with an induction winding (38) to enable a temperature gradient to be established within the substrate, so that the substrate has a higher temperature in its portions remote from its expose |
| 5789026 |
Chemical vapor infiltration process of a pyrocarbon matrix within a porous substrate with creati |
August 4, 1998 |
| The substrate (10) is placed in an enclosure (12) and is heated so as to establish a temperature gradient within the substrate such that the substrate has a temperature in its portions remote from its exposed surfaces that is greater than its temperature at said surfaces. A gas const |
| 5775878 |
Turbine of thermostructural composite material, in particular of small diameter, and a method of |
July 7, 1998 |
| The turbine comprises a plurality of blades disposed between two end plates and defining flow passages between an inner ring and an outer ring. The turbine is formed by first and second parts, each part made as a single one-piece part out of thermostructural composite material, the first |
| 5749559 |
Device for controlling a spacecraft by gating gas via a moving nozzle |
May 12, 1998 |
| A device for controlling a spacecraft by gating gas, the device comprising a nozzle, a gas feed duct, a gate having a seat and a plunger interposed between the feed duct and the nozzle, and control means for opening and closing the gate in order to put the feed duct selectively into |
| 5738951 |
Method of manufacturing a composite material with lamellar interphase between reinforcing fibers |
April 14, 1998 |
| The interphase is formed by nanometric scale sequencing of a plurality of different constituents including at least a first constituent that intrinsically presents a lamellar microtexture, and at least a second constituent that is suitable for protecting the first against oxidation. A |
| 5732883 |
Combustion enclosure with cooling by transpiration |
March 31, 1998 |
| The invention relates to an enclosure containing hot gases cooled by transpiration, the enclosure comprising a porous wall and means for applying a cooling fluid to the outside face of said porous wall so as to cause a flow of cooling fluid to pass through the porous wall, by transpi |
| 5581155 |
Plasma accelerator with closed electron drift |
December 3, 1996 |
| The plasma accelerator comprises: a main annular channel (24) for ionization and for acceleration defined by parts (22) made of insulating material and open at its downstream end (225); at least one hollow cathode (40) associated with ionizable gas feed means (41); and an annular anode |
| 5570573 |
Combustion chamber for a thruster with a sealed connection between an end wall and a composite t |
November 5, 1996 |
| The combustion chamber of the thruster comprises a tubular structure of composite material, at least one end wall applied to an end of the tubular structure, and a sealed connection device between the tubular structure and the end wall. The connection device includes mechanical connectio |
| 5552220 |
Method of manufacturing a composite material having a pyrolytic carbon interphase of lamellar mi |
September 3, 1996 |
| The pyrolytic carbon lamellar interphase is formed on the reinforcing fibers inside a chamber in which a plurality of successive cycles is performed, each cycle comprising: injecting a reaction gas in which the pyrolytic carbon precursor is selected from alkanes, excluding methane ta |
| 5545015 |
Self-cooled and removable integrated cryogenic liquid pump |
August 13, 1996 |
| The invention relates to a cryogenic liquid pump provided with a pump body driven by a motor assembly and integrated in a cryogenic liquid tank. The pump body is removable and can be put selectively in communication with the tank by sliding the pump body into a well. A first non-return v |
| 5296171 |
Method for fabricating a ceramic fiber reinforced composite material |
March 22, 1994 |
| A method of fabricating a composite material including a matrix reinforced by ceramic fibers which are derived by ceramization of an organometallic precursor. The method includes the steps of irradiating the ceramic fibers with electromagnetic radiation of wavelength less than or equal t |
| 5154948 |
Method for shaping a fibrous reinforcement texture used in the manufacture of a composite materi |
October 13, 1992 |
| The shaping of the fibrous texture is at least partly achieved by applying a deformable layer or strip, such as a cloth, made from a material having a thermal expansion coefficient different from that of the material constituting the fibrous texture. The layer or strip is stretched over |
| 5067316 |
Rocket engine expansion nozzle with complementary annular nozzle |
November 26, 1991 |
| The invention comprises an expansion nozzle for a rocket engine destined to function successively in atmospheric and space conditions. The nozzle is comprised of a main wall defining a surface of revolution that splays outwardly and further comprises a complementary annular convergent |
| 4751123 |
Process for manufacturing a turbine or compressor wheel made of composite material and wheel thu |
June 14, 1988 |
| This invention relates to a process for manufacturing a turbine or compressor wheel made of composite material, comprising the following steps of:making at least two helicoidal textures each formed by weaving a spiral band with helicoidal warp yarns and weft yarns which are substantially |
| 4613021 |
Brake disc with removable pads |
September 23, 1986 |
| The disc consists of a core (1), being a hub (3) surrounded by spokes (2), and friction pads in the form of annular sectors (8) having recesses (15, 16) in their inside backs (10) to cooperate with the spokes (2) in providing radial guidance and angular locking. Elastic means are provide |
| 4366183 |
Process for making bioactive coatings on osseous prostheses, and prostheses thus obtained |
December 28, 1982 |
| The present invention relates to a process for making bioactive coatings on osseous prostheses, wherein, from solutions, a mist of particles containing calcium ions and orthophosphate ions is made and said mist is brought into contact with an implant made of inert material under such |
| 4349155 |
Unfoldable divergent nozzle for a rocket engine |
September 14, 1982 |
| An unfoldable divergent nozzle for a rocket engine comprises a set of elementary individual panels of a refractory material articulated together and with respect to a fixed upstream portion of the divergent nozzle in the vicinity of the neck of the nozzle. The articulations between two |
| 4321154 |
High temperature thermal insulation material and method for making same |
March 23, 1982 |
| A thermal insulation material at high temperature comprising insulating mineral fibres bonded in a matrix, wherein the mineral fibres have a melting point higher than 1.000.degree. C. and represent 15 to 60% of the weight of the material, and wherein the matrix is formed, at least in |
| 4286431 |
Ignition system for combustible gases or liquids |
September 1, 1981 |
| The invention relates to an ignition system comprising an igniter constituted by a receptacle, an ignition initiator disposed at one end of said receptacle, and a solid charge placed inside the receptacle, the solid charge comprising pyrotechnic compositions and reactive divided meta |
| 4194706 |
Device for imparting a movement of rotation to a craft when it is launched |
March 25, 1980 |
| The present invention relates to a device for imparting a movement of rotation to a craft with nozzle propulsion system during launching thereof by means of a launching member, said device comprising: a wheel with vanes or fins formed by a section of tube located in the rear extension of |
| 4141604 |
Electromagnetic bearings for mounting elongate rotating shafts |
February 27, 1979 |
| A mounting for an elongate horizontal shaft, for example a rotor shaft of a turbine or compressor, comprises two radial end bearings, and at least one intermediate radial bearing. The intermediate bearing is an electromagnetic bearing and is controlled by a detector responsive to the |
| 4128795 |
Device for damping the critical frequencies of a rotor suspended by a radial electromagnetic bea |
December 5, 1978 |
| A device is disclosed for damping the critical frequencies of a rotor suspended by a radial electromagnetic bearing which has means associated therewith for detecting the radial position of the rotor, comprising a servo-circuit for connection between the detecting means and windings of |
| 3977629 |
Projectile guidance |
August 31, 1976 |
| A projectile guidance system employs entry and exit ports for the ambient fluid medium with fluidic circuits interconnecting various of the entry and exit ports so that asymmetry of the flow through the ports will be induced merely by regulating the flow in any given fluidic circuit. |
| 3977273 |
Flywheel |
August 31, 1976 |
| A flywheel for an inertial guidance system, comprising a rim reinforced by a sheet formed of one or more filaments wound around the rim and intersecting adjacent the axis of symmetry of the rim. The sheet of filaments may be reinforced by means of a binder and the flywheel may or may |
