Patent ID: 11883694
Assignee: B/E AEROSPACE SYSTEMS GMBH
Field: Other consumer goods (Other fields)
Classification: CPC A  B | IPC A

Claim 9:
10. A method for regulating oxygen delivery to a user, the method comprising:
receiving, via a breathing regulator, a pressure signal from a breathing mask worn by a user, the pressure signal corresponding to the beginning of an inhalation cycle and the opening of a demand valve;
providing a pure oxygen supply to the breathing mask via the open demand valve;
reducing a control volume (CV) pressure within the breathing regulator;
when the CV pressure deceeds a lower pressure threshold, cutting off the pure oxygen supply by closing a main valve of the breathing regulator;
providing an ambient air supply to the breathing mask;
when the inhalation cycle has ended, restoring the CV pressure within the breathing regulator;
and
when the CV pressure exceeds an upper pressure threshold, preparing for a subsequent inhalation cycle by opening the main valve.