A gas rail includes, preferably, three conduits designed to convey vacuum, pressurized oxygen and air, respectively, for a fluid flow system designed to be located in a hospital room. The gas rail includes a fluid coupling for each conduit so that each conduit may be coupled to its respective source...http://www.google.ca/patents/US5553892?utm_source=gb-gplus-sharePatent US5553892 - Multiple-channel plural-position gas rail and bracket mount therefor
