Patent ID: 6941946

Claim:
In a hose apparatus having an inlet adaptor having a first passageway, an outlet adaptor having a second passageway and connectable to a nozzle for dispensing water and a flexible water hose between and connected to the inlet and outlet adaptors, the improvement which comprises: (a) a first fitting secured in a watertight connection through the inlet adaptor with an opening through the first fitting into the first passageway and with a first tubular member which extends towards the water hose; (b) a second fitting secured through the outlet adaptor in a watertight connection with an opening through the second fitting into the second passageway with a second tubular member which extends towards the water hose such that the first and second tubular members are open towards each other; (c) a flexible gas hose connected between the tubular members inside of the water hose in a gas and watertight connection; (d) a first coupling on the first fitting for connecting a source of breathable gas through the opening in the first fitting, the first tubular member, the flexible gas hose, the second tubular member, and the opening in the second fitting, the first coupling having a valve for sealing the first fitting when disconnected and for providing breathable gas when connected to the source of breathable gas; and (e) a second coupling on the second fitting for connecting the breathable gas to a pressure regulator as part of a firefighter's mask wherein the gas hose is able to withstand an external water pressure in the water hose without collapsing and an internal pressure of the breathable gas of at least 75 psig.