Abstract: A system for extracting carbon dioxide from a mixture of gases that include at least carbon dioxide, wherein a reservoir is provided that contains a material capable of adsorbing the carbon dioxide, the reservoir having an inlet for the mixture and an outlet for a mixture that is at least partially purified of carbon dioxide, where the system also includes at least one element for heating the reservoir, at least one electronic control circuit that causes a heating of the reservoir when at least one condition is fulfilled, so as to give rise to the desorption of the carbon dioxide adsorbed on the material contained in the reservoir.

Abstract: The device (50) includes at least one electronic circuit (52) and a battery (53) provided for powering the circuit, wherein the circuit and the battery are included in a block of hydrophobic material, for example a block of resin (51). The battery is, for example, an inductively charged battery and the device can include optical sockets (56a, 56b, 56c) for fiber-optic cables, so as to avoid all contact of metal parts with water. Such a device is especially suitable for a buoyancy compensator vest, for use as a “stabilizer during immersion” and as a “closed-circuit rebreather”.

Abstract: A system for extracting carbon dioxide from a mixture of gases including at least carbon dioxide, includes at least one reservoir (10) containing a material (20) capable of adsorbing the carbon dioxide, each reservoir having an inlet (13) for the mixture and an outlet (14) for a mixture that is at least partially purified of carbon dioxide, which may moreover include: at least one element (40) for heating the reservoir, at least one electronic control circuit (50), provided in order to give rise to the heating of at least one reservoir when at least one condition is fulfilled, so as to give rise to the desorption of the carbon dioxide adsorbed on the material contained in the respective reservoir.

Abstract: The device (50) includes at least one electronic circuit (52) and a battery (53) provided for powering the circuit, wherein the circuit and the battery are included in a block of hydrophobic material, for example a block of resin (51). The battery is, for example, an inductively charged battery and the device can include optical sockets (56a, 56b, 56c) for fiber-optic cables, so as to avoid all contact of metal parts with water. Such a device is especially suitable for a buoyancy compensator vest, for use as a “stabilizer during immersion” and as a “closed-circuit rebreather”.

Abstract: Plant for supplying helium to a plurality of production lines, comprising a helium source of at least 7000 liters; a network of secondary ducts, feeding production lines using helium gas; and a main duct for conveying helium, connected upstream to the helium source and downstream to the network of secondary ducts. Such a plant is useful in a filling operation for diving gas cylinders, dirigible airship gas bags or safety airbag inflation containers, for quenching metal articles, or for fabricating electronic products or optical fibers.

Abstract: Process and apparatus for the purification of a cryogenic fluid in liquid, diphase, gaseous or supercritical state, having boiling point Pe, with at least one of its impurities having a boiling point Pe', with Pe'>Pe. The process includes at least one step selected from the group comprised by:a filtration step of at least one impurity in solid state,and an adsorption step of at least one impurity in liquid or gaseous state;and in which there is recovered at least one portion of the cryogenic fluid at least partially purified.

Abstract: In order to deliver ultrapure helium to a utilization line (1), helium is withdrawn, in liquid or supercritical form, from a storage tank (3), it is filtered in this liquid or supercritical form (at 4), the filtered helium is vaporized and the resulting helium gas is sent to the utilization line (1). The process is applicable to the cooling of integrated-circuit wafers.

Abstract: Process and apparatus for the purification of a cryogenic fluid in liquid, diphase, gaseous or supercritical state, having boiling point Pe, with at least one of its impurities having a boiling point Pe', with Pe'>Pe. The process includes at least one step selected from the group comprised by:a filtration step of at least one impurity in solid state,and an adsorption step of at least one impurity in liquid or gaseous state;and in which there is recovered at least one portion of the cryogenic fluid at least partially purified.

Abstract: Process and apparatus for the purification of a cryogenic fluid in liquid, diphase, gaseous or supercritical state, having a boiling point Pe, with at least one of its impurities having a boiling point Pe', with Pe'>Pe. The process includes at least one step selected from the group comprised by:a filtration step of at least one impurity in solid state,and an adsorption step of at least one impurity in liquid or gaseous state;and in which there is recovered at least one portion of the cryogenic fluid at least partially purified.

Abstract: Process and apparatus for the purification of a cryogenic fluid in liquid, diphase, gaseous or supercritical state, having boiling point Pe, with at least one of its impurities having a boiling point Pe', with Pe'>Pe. The process includes at least one step selected from the group comprised by:a filtration step of at least one impurity in solid state,and an adsorption step of at least one impurity in liquid or gaseous state;and in which there is recovered at least one portion of the cryogenic fluid at least partially purified.

Abstract: A lever (6) is pushed by a cam profile (23) formed on an actuating member (9) fastened to a movable body (12), the movement of which is to be detected. A cam (13) fixed to the lever moves a plunger (16) which actuates a position switch (33). There is interposed between the plunger and the switch an influencing member (22), the position of which is measured by means of a card (28) passing in front of photoelectric detectors (29). A processing unit (31) supplies, at the output, an analog or numerical signal relating to the position of the movable body (12), to its speed or to its acceleration.