Patent ID: 7681573
Filing Date: 2010-03-23
Classification: A62B

Abstract:
1. A compressed air respirator, comprising: a compressed air reserve with a connected demand air supply valve; a reversible breathing gas reservoir with a registering means detecting the filling level of said breathing gas reservoir; an inspiration and expiration line for the user of the respirator; an admission line; a discharge line; another valve connected to said inspiration and expiration line and, on an inlet side, connected with said compressed air reserve with said demand air supply valve and connected with said breathing gas reservoir via said discharge line and, on an outlet side, connected with said breathing gas reservoir via said admission line and with ambient air, said valve being cyclically reversed by said registering means in two phases such that depending on a filling level of said breathing gas reservoir, said inspiration line is first connected with said compressed air reserve and said expiration line with said breathing gas reservoir via said admission line during a first phase until the filling level of said breathing gas reservoir reaches an upper reversing point for said another valve, so that the inspiration line is connected with said breathing gas reservoir via said discharge line and said expiration line with said ambient air during a second phase until the filling level of said breathing gas reservoir reaches a lower reversing point for said another valve and said another valve is again reversed as in the first phase.