L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

L'air Liquide, Societe Anonyme a Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude

Zodiac Aerotechnics

L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

Jean-Michel Cazenave

Jean Dehayes

Olivier Vandroux

Rachid Makhlouche

Richard Zapata

Stéphane Lessi

Christian Rolland

Freddy Dumont

Nelly Giroud

Nicolas Schmutz

Xavier Roussin-Bouchard

Vincent Graziani

Aurelie Caillaud

Didier Gaget

Pierrick Cohard

Benoit Rossignol

Alexandre Domenget

Alexandre Pentagora

Norbert Ponsinet

Jorge Gaspar

Gilles Delaitre

Philippe Boggetto

Barry Wood

Vincent Perrard

Paul Norman Trevena

Colin Ian Campbell

Stephane Lessi

Loïc Villard

A device for regulating breathing gas delivered to a user, comprising a gas circuit comprising a main line having at least an upstream end intended to be connected to at least one gas source and a downstream end intended to be connected to at least one user station such as a mask, the main line comprising at least one electromechanical control valve configured to regulate the gas pressure between the upstream and the downstream, the circuit comprising a secondary line comprising an upstream end intended to be connected to at least one gas source and a downstream end intended to be connected to the same user station(s), the secondary line comprising at least one auxiliary member for regulating the gas flow, the device comprising a switching system configured to control the flow of gas between the upstream and the downstream of the circuit via the main line or via the secondary line, characterized in that the auxiliary member for regulating the secondary line is a pneumatic pressure regulator.

Regulating device, apparatus and method for generating breathing gas

A respiratory protection hood having a sealed flexible shell including a pressurized oxygen vessel provided with a calibrated output opening leading into the inside space of the flexible shell and a device for trapping at least one portion of the carbon dioxide exhaled by the user that includes a cartridge for adsorbing carbon dioxide having a perforated tube arranged around a volume of carbon dioxide absorbing material. At least one portion of the perforated tube being arranged around the volume of absorbent material in direct communication with the inside space of the hood.

Respiratory protection hood

The present disclosure relates to a device for measuring the amount of oxygen present in a gas to be analyze. The device includes at least one member for measuring the amount of oxygen, a first inlet in communication with the measuring member for the supply of gas to be analyzed, and an outlet for the discharge of said analyzed gas. The device also includes a second inlet intended to communicate with the measuring member, allowing said device to be supplied selectively with a calibration gas having a known amount of oxygen, such that the measurement of the amount of oxygen present in the calibration gas makes it possible to determine a potential drift of the measurement of said measuring member relative to the actual known amount of oxygen present in the calibration gas.

Device for measuring the amount of oxygen present in a gas, and air-separation module comprising such a measurement device

A hood comprising a flexible envelope and a reservoir of oxygen comprising a calibrated outlet orifice that leads into the internal volume of the envelope, the outlet orifice being closed off by a removable stopper, characterized in that the reservoir of pressurized oxygen comprises two independent storage compartments, a first compartment of which communicates with the outlet orifice and a second compartment of which is isolated from the outlet orifice via a sealed partition provided with a member for opening the partition, the opening member being switchable between a first configuration which prevents fluidic communication between the second compartment and the outlet orifice and a second configuration that allows fluidic communication between the second compartment and the outlet orifice, the opening member being sensitive to the pressure difference between the second compartment and the first compartment and being configured to automatically switch from the first to the second configuration when the pressure difference between the second compartment and the first compartment is less than a given threshold.

Respiratory protection hood comprising a flexible envelope and a reservoir of pressurized oxygen comprising an outlet orifice that leads into the internal volume of the envelope, the outlet orifice being closed off by a removable stopper, characterized in that the reservoir of oxygen comprises, upstream of the orifice, a passage for the pressurized gas and a needle that is able to move in a given direction of displacement in said passage, the needle being subjected to two opposite forces in the direction of displacement, said forces being respectively generated on the one hand by the pressure of the gas in the reservoir and the other hand by a return member, the needle having a section with a defined profile that is variable in the direction of displacement in order to modify the degree of closure of the passage depending on the position of said needle relative to the passage so as to regulate the flow rate of gas allowed to escape via the passage towards the orifice as a function of time and the pressure of gas in the reservoir.

Respiratory protection equipment

The invention relates to a circuit for supplying oxygen to aircraft passengers. According to the invention, the line () used to supply pressurized oxygen to the passenger masks () comprises a motorized pressure regulator () which can be actuated in response to a pressure control signal () provided by an electronic control unit () according to a signal () that is representative of the cabin pressure ().

Circuit for supplying oxygen to aircraft passengers

Method and system on board an aircraft for the production of an oxygen-enriched gas stream from an oxygen/nitrogen gas mixture, particularly air, comprising at least one adsorber containing at least one adsorbent for adsorbing at least some of the nitrogen molecules contained in the oxygen/nitrogen feed mixture, characterized in that the adsorbent comprises a faujasite-type zeolite, having a Si/Al ratio of 1 to 1.50, exchanged to at least 80% with lithium cations. Aircraft equipped with such a system, in particular an airliner, especially an airliner of the long-range, large-capacity type.

On-board oxygen production system for aircraft, in particular long-range aircraft

According to this process, there is supplied to the passengers a first fraction of air enriched in oxygen from independent supply elements, in particular high pressure cylinders (), during a descent phase of the aircraft between a normal cruising altitude and an intermediate re-routing altitude. There is moreover compressed air taken from a source of compressed air belonging to the aircraft, to produce (in) a second fraction of the air enriched in oxygen which is delivered to the passengers, at least during a phase of stabilized flight of the aircraft, adjacent the re-routing altitude, greater than 5,500 meters.

Process and installation for the distribution of air enriched in oxygen to passengers of an aircraft

According to this process, there is supplied to the passengers a first fraction of air enriched in oxygen from independent supply elements, in particular high pressure cylinders ( ), during a descent phase of the aircraft between a normal cruising altitude and an intermediate rerouting altitude. There is moreover compressed air taken from a source of compressed air belonging to the aircraft, to produce (in ) a second fraction of the air enriched in oxygen which is delivered to the passengers, at least during a phase of stabilized flight of the aircraft, adjacent the re-routing altitude, greater than 5,500 meters.

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Seyssins, France

Jean-Michel Cazenave