Patent ID: 8302603
Filing Date: 2012-11-06
Classification: A62B,B63C

Abstract:
1. A rebreather system comprising: a rebreather head assembly having a breathing hose connector mounted thereupon; a double conterlung that includes an inner air bladder disposed within an outer air bladder with a void defined between said inner and outer bladders connected to said rebreather head assembly, said counterlung outer bladder being elastic and flexible and said counterlung inner bladder being non-elastic but flexible; a supply of oxygen gas connected to said rebreather head assembly; a scrubber canister connected to said rebreather head assembly, said rebreather head assembly operative to selectively add oxygen gas to said conterlung to maintain the oxygen level within the system as function of the surrounding environment; and a single control device disposed within said rebreather head assembly and operative to selectively switch between one of an oxygen off mode of operation, an oxygen on/open circuit mode of operation and an oxygen on/closed circuit mode of operation, said control device also being selectively operative to pressurize said void between said inner and outer to provide a pressure boost to said inner counterlung bladder.