The present invention is a centralized flow control unit (CFCU) for regulating oxygen flow in a multiple user emergency oxygen distribution system in passenger aircraft. Upon activation, the CFCU initially allows unregulated flow of oxygen to surge into the distribution system to thereby purge the ambient...http://www.google.co.uk/patents/US7341072?utm_source=gb-gplus-sharePatent US7341072 - Oxygen supply system having a central flow control unit
