Abstract: The invention relates to a device for dispensing one or more jets (5) of high-pressure fluid at cryogenic temperature, comprising a nozzle-bearing tool (4) comprising one or more fluid distribution nozzles (6), and a movement system (2) for moving said nozzle bearing tool (4). According to the invention, the device further comprises at least one flexible protection casing (7) arranged around all or part of the movement system (2) that moves said nozzle bearing tool (4).

Abstract: The invention relates to a facility and a method for the stripping, de-scaling, and surface treatment of coated and uncoated materials such as metals, concrete, wood, polymers, plastics or any other type of material, by means of cryogenic fluid jets at very high pressure.

Abstract: A fog distribution head for a fogging apparatus, which has: a fog inlet, and at least two fog outlets, each suitable for placing the inlet in communication with the outside of the head. The head includes at least two plugs suitable for plugging the respective outlets. Each plug is suitable for plugging a single one of the outlets, the plugs being movably mounted with respect to a frame of the head, independently from one another.

Abstract: The device for diffusing sprayed liquid in a reception zone includes a vessel suitable for containing a liquid for spraying and at least one diffuser of sprayed liquid that is arranged in the vessel. The diffuser includes in particular an ultrasound emitter. The cleaning method is such that during a stage of operation of the device in which the device is not diffusing liquid in the reception zone, the following steps are performed: heating a liquid in the vessel up to a predetermined temperature, preferably higher than 60° C., in particular lying in the range 65° C. to 80° C.; and draining the liquid from the vessel via a pipe of the device that is situated outside a circuit for diffusing sprayed liquid in the reception zone.

Abstract: The invention relates to a method for producing a coating, with a material, of at least one part of the surface of a substrate by spraying particles of the material toward the substrate to be coated using a carrier fluid containing a compound chosen from the gases of the air. According to the invention, the carrier fluid is in the liquid state, at a pressure of at least 300 bar and at a temperature below O ° C. Associated surface treatment apparatus, especially apparatus for carrying out a method according to the invention.

Abstract: The invention relates to a device for dispensing one or more jets of cryogenic fluid comprising a fluid supply pipe supplying one or more fluid-dispensing nozzles arranged downstream of said pipe, in which the fluid flow section of the fluid supply pipe has a first diameter. According to the invention, the device for dispensing one or more jets of cryogenic fluid also comprises at least one plenum chamber which is arranged between the fluid supply pipe and the fluid-dispensing nozzle(s) and which is fluidly connected to both the pipe and the nozzle(s). The fluid flow section of each plenum chamber has a second diameter greater than the first diameter of the fluid flow section of the fluid supply pipe.

Abstract: A tape-measure device having elements for measuring and/or marking/cutting an object, includes a tape, a shell (3) with a reel, an opening (5) enabling the tape (2) to pass through the shell wall, an end piece (6) attached to the distal end of the tape, a stop button (7) for the reel for blocking the tape or for enabling the rolling/unrolling of the tape. The elements include a guide shoulder (8) formed on the shell, a guide opening (9) at the end piece for the removable insertion of the end of a marking/cutting tool, and a sliding surface (60) for the end piece for translatably engaging the surface of the object to mark/cut the object using one of the surfaces thereof when the guide shoulder is simultaneously slid along an edge of the object and the end piece of the tape against the surface of the object to be marked/cut.

Abstract: Serial communications circuitry is provided that has bonded first-in-first-out (FIFO) buffer circuitry. The circuitry may include state machine and barrel shifter circuitry that conveys data between the bonded FIFO circuitry and a bonded serial communications path. The bonded FIFO circuitry and the bonded lane may increase the efficiency of the serial communications circuitry by reducing the number of empty data bytes buffered in the FIFO circuitry and conveyed over the serial communications path.

Abstract: The invention relates to a method for machining a part to be machined using a machining tool, in which at least a portion of the machining area, likely to be heated during the machining of the part, or a portion of the machining tool is cooled by dispensing liquid nitrogen to said machining area or said tool. Solid CO2 particles are also dispensed into the machining area. The invention also relates to an apparatus for implementing said method.

Abstract: The invention relates to an electric arc welding method for welding at least one metal part including an aluminum based surface coating, using a shielding gas. According to the invention, the metal of the aforementioned metal part is melted by the electric arc alone without the use of any laser beam. The invention is characterized in that the shielding gas comprises a mixture of argon and/or helium, nitrogen, and an oxidizing compound selected from oxygen and carbon dioxide.

Abstract: The invention relates to a method for electric arc welding, without a laser beam, one or more metal parts, in particular made of steel, including an aluminum surface coating, in particular a coating consisting of aluminum and silicon, using a protective gas, characterized in that the protective gas consists of a mixture of argon and/or helium, and additionally of nitrogen, in particular less than 30 volume % of nitrogen, typically 2 to 10 volume % of nitrogen.

Abstract: The subject of the invention is a device for driving a pump of a rocket engine of a space vehicle that comprises an air-breathing internal combustion engine running on an oxidizer/fuel mixture of the air/hydrocarbon type, wherein the supply of oxidant and fuel is provided by tanks and a circuit that are separate from the propellant tanks of the rocket engine. The invention applies to a device for fueling a rocket engine that includes at least two pumps, each driven by the device of the invention, and means for controlling the internal combustion engines for driving the pumps, adapted for independently varying the operating parameters of these engines so as to independently adjust the rotation speeds of the pumps.

Abstract: The invention relates to a method for removing at least part of at least one layer of a composite coating that is formed of fibers and at least one resin that is present on the surface of the body of a gas cartridge. In said method, at least one liquid nitrogen stream is dispensed at a temperature less than ?100 DEG C at a pressure of at least 00 bars upon contact with said coating so as to remove at least part of said coating layer present on the body of the gas cartridge.

Abstract: A method for pickling or descaling a concrete surface employing at least one jet of liquid nitrogen at cryogenic temperature below ?100° C. at a pressure of at least 500 bar, distributed by the discharge orifice of at least one nozzle for distributing the jet of liquid nitrogen. At least a portion of the distributing nozzle is protected by a resistant material haying a hardness of at least 7 on Mohs' scale. Preferably, the resistant material is deposited externally on at least a portion of wall of nozzle. Advantageously, the material is selected from tungsten carbide, boron carbide, titanium carbide, silicon carbide, cubic boron nitride, alumina and corundum.

Abstract: A tape-measure device having elements for measuring and/or marking/cutting an object, includes a tape, a shell (3) with a reel, an opening (5) enabling the tape (2) to pass through the shell wall, an end piece (6) attached to the distal end of the tape, a stop button (7) for the reel for blocking the tape or for enabling the rolling/unrolling of the tape. The elements include a guide shoulder (8) formed on the shell, a guide opening (9) at the end piece for the removable insertion of the end of a marking/cutting tool, and a sliding surface (60) for the end piece for translatably engaging the surface of the object to mark/cut the object using one of the surfaces thereof when the guide shoulder is simultaneously slid along an edge of the object and the end piece of the tape against the surface of the object to be marked/cut.

Abstract: Reconfigurable fault-tolerant inverter for powering a multi-phase synchronous permanent-magnet motor, and assembly of the said inverter and motor. The inverter includes: N switching cells (B1, B2, B3) including switching devices (B11 to B32) and isolating devices (S11 to S33) where N is the number of phases of the motor (N?3); at least one redundancy cell (R); a supervisor (12) to detect an operating anomaly of the inverter, leading to a stoppage of the motor (14), resulting from a failure of one of the N cells and causing a fault of one of the phases of the motor. Each switching device informs the supervisor of a short circuit affecting this device, and the supervisor supervises the integral value of the absolute value of the current in the defective phase.

Abstract: The device for diffusing sprayed liquid in a reception zone includes a vessel suitable for containing a liquid for spraying and at least one diffuser of sprayed liquid that is arranged in the vessel. The diffuser includes in particular an ultrasound emitter. The cleaning method is such that during a stage of operation of the device in which the device is not diffusing liquid in the reception zone, the following steps are performed: heating a liquid in the vessel up to a predetermined temperature, preferably higher than 60° C., in particular lying in the range 65° C. to 80° C.; and draining the liquid from the vessel via a pipe of the device that is situated outside a circuit for diffusing sprayed liquid in the reception zone.

Abstract: The disclosure relates to a device for dispensing one or more jets of cryogenic fluid, particularly liquid nitrogen, comprising a fluid conveying pipeline feeding one or more fluid dispensing nozzles arranged at the downstream end of said pipeline, and a motor collaborating with the fluid conveying pipeline via a rotary transmission shaft and a transmission mechanism.

Abstract: The invention relates to a device for dispensing at least one high-pressure cryogenic fluid stream, said device including a movable tool, comprising one or more fluid-dispensing nozzles for dispensing one or more high-pressure cryogenic fluid streams, and a line for supplying high-pressure cryogenic fluid from the movable tool, said line including a stationary upstream portion and a movable downstream portion that is connected to the movable tool, said stationary upstream portion and movable downstream portion being fluidly connected to each other by means of a rotatable system including a rotating joint. The rotating joint includes a polymer material having a heat expansion coefficient between 10×106 and 160×10?6/K.

Abstract: The invention relates to a method for removing at least part of at least one layer of a composite coating that is formed of fibers and at least one resin that is present on the surface of the body of a gas cartridge. In said method, at least one liquid nitrogen stream is dispensed at a temperature less than ?100 DEG C at a pressure of at least 00 bars upon contact with said coating so as to remove at least part of said coating layer present on the body of the gas cartridge.