Connector device for breathing apparatus
OwnerFredric C. Pearce, Jr.inventor
Life of this patent
Estimating the term…
Abstract
The disclosure embraces a connecting tee for use with a contained air supply to enable two or more individuals to draw air from the supply and includes a chamber having one passage connected to a source of air, a first passageway with a one-way check valve for supplying air to a first user and a second passageway which is provided with a pair of one way check valves; the first valve of the second passage permits air flow out of the connector from the source but prevents inflow of external air; the second check valve of the second passageway is normally in a closed position but is manually opened where a second user must establish communication with the source of air carried by the first user.
Claims6
In a breathing apparatus including a container for gas under pressure, a regulating device connected to the container, said regulating device having means for supplying gas at atmospheric pressure on demand and means for supplying gas at the container pressure, at least one face mask having an exhaust valve and a conduit connected to the face mask for supplying gas thereto, the improvement comprising:
- a connector device including a body having a chamber therein,
- a first opening in said body communicating with said chamber, said first opening having means for establishing a fluid tight connection with said regulating device,
- a second opening in said body also communicating with said chamber, said second opening having an apertured wall extending across said second opening and flexible disc valve means mounted on said apertured wall for permitting escape of gas from said chamber through said apertured wall in response to the presence of a lower pressure existing externally of said body relative to the pressure in said chamber, but preventing passage of gas through said second opening into said chamber, said second opening having means for establishing a connection with said conduit connected to said face mask,
- a third opening in said body also communicating with said chamber, said third opening having at one end thereof a first apertured wall extending there across and a second apertured wall located at a distance from said first apertured wall and closer to the external end of said third opening, said first apertured wall having flexible disc valve means mounted thereon for permitting escape of gas from said chamber to said second apertured wall, but preventing passage of gas from the exterior of said body into said chamber, said second apertured wall of said third opening having flexible disc valve means mounted thereon and movable between a closed position wherein escape of gas from said chamber through said first apertured wall of said third opening is prevented and an open position wherein escape of gas therethrough from said chamber and through said first apertured wall and flexible disc valve means mounted thereon is permitted.
Dependencies are inferred from the claim text.