Patent ID: 11872420
Assignee: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
Field: Transport (Mechanical engineering)
Classification: CPC A  G  B | IPC A  B

Claim 0:
1. A device for regulating breathing gas delivered to a user, comprising a changeover system and a gas circuit that comprises a main line and a secondary line, wherein:
the main line has at least an upstream end configured to connect to at least a first gas source, the main line further comprises a downstream end configured to connect to at least one user station, and the main line further comprises at least one electromechanical regulating valve configured to regulate the pressure of the gas on either side of said at least one electromechanical regulating valve;
the secondary line comprises an upstream end configured to connect to at least a second gas source, the secondary line further comprises a downstream end configured to connect to said at least one user station, and the secondary line further comprises at least one pneumatic pressure regulator; and
the changeover system is configured to control passage of gas along a path selected from the group consisting of the main line or the secondary line.