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: 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 protective enclosure for a mobile tool for dispensing fluid at a cryogenic temperature, said protective enclosure comprising an open end forming an extraction bell, said open end comprising a skirt, characterized in that the skirt comprises a first part made from a hydrophobic first material.

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: 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: 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 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: 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.

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: The invention relates to a process and device for cutting materials, such as metals, concrete, wood, plastics or any other type of material, by means of a jet of cryogenic fluid at very high pressure with added abrasive, in particular corundum. Materials can be cut using a disk cutter (concrete, stone, metals, etc.), with a saw (metals, wood, plastics, etc.), by laser beam (metals, plastics, etc.), using a plasma jet (metals), using an ultrahigh pressure (UHP) water jet with or without abrasives (any type of material).

Abstract: The invention relates to working equipment that uses one or more jets of high-pressure fluid at a cryogenic temperature, including a source (1) of cryogenic fluid connected to a mobile tool (4) including fluid-dispensing nozzles (11) for dispensing jets of high-pressure cryogenic fluid, and first and second protection enclosures arranged about the mobile tool (4) and connected to suction means (25). The plant further comprises gas sealing means (23) suitable for and designed to form at least one gas protection barrier between the two enclosures (20, 23) due to the supply of a dry gas into the second enclosure (23). The invention also relates to a method for implementing same and to the use thereof for the surface treatment, blasting, or peeling of a material using a high-pressure cryogenic fluid.

Abstract: The invention relates to working equipment, particularly for heat treatment, pickling, or the like, implementing high pressure liquid jets at cryogenic temperatures including a rotary or swinging tool (4) comprising one or more nozzles (11) for dispensing high pressure liquid jets at cryogenic temperatures, and a motor (21) for rotating or swinging the tool (4). The motor (21) is connected to the tool (4) via a rotary transmission shaft (22) and a transmission gearbox (23) containing an internal transmission mechanism, typically with sprockets (24) or belts. The equipment further comprises means (28) for feeding dry gas, such as nitrogen or dry air, in communication with the inside of the transmission gearbox (23) designed for and capable of feeding the inside or said transmission gearbox (23) with dry gas. Said injection of gas into the transmission gearbox (23) prevents the contamination of the inside of the transmission gearbox with atmospheric impurities.