Logical display for a breathing apparatus mask
AssigneeSurvivair Respirators, Inc.
InventorsDavid V. Haston, Nicolo J. Luzie, Jr., Carl E. Schaefer, Carl Toft, John Wippler
Life of this patent
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Abstract
A mask and regulator for a self-contained breathing apparatus (SCBA) having a lens and a nozzle, the regulator being adapted for connection to the nozzle. A bifurcated display is mounted on the regulator for displaying amounts of pressure through a port communicating with the lens on either side of the nozzle. A high pressure connection to the source of breathing gas is connected to a transducer assembly for indicating the pressure to the bifurcated display on the regulator on either side. The display provides pressure values through the exterior of the lens in a bifurcated manner analogous to an arcuate gauge display.
Claims31
A mask and regulator for a self-contained breathing apparatus (SCBA) comprising:
- a mask having a lens area, seal, and straps for connecting the mask to a user's facial area;
- a nozzle for connecting a source of breathing gas to said mask;
- a second stage regulator adapted for connection to said nozzle;
- a display mounted on said second stage regulator for displaying amounts of pressure in the source of breathing gas;
- and,
- at least one port on said mask communicating externally with said lens for viewing said display on said regulator through said port.
A self-contained breathing apparatus (SCBA) comprising:
- a mask having a viewing lens, straps, and a seal for retaining said mask on a user's face with a nozzle for receipt of breathing gas;
- an oral nasal cover communicating with the interior of said mask through which a user can receive breathing gas;
- a second stage regulator for connection to said nozzle by a connection fitting;
- a source of breathing gas;
- a first stage regulator connected to said source of breathing gas and adapted for connection to said second stage regulator through an intermediate pressure conduit;
- a high pressure connection to said source of breathing gas connected to a transducer assembly having a transducer for indicating the pressure of said source of breathing gas;
- an electrical connection for connection between said second state regulator and said transducer assembly;
- and,
- a display on said second stage regulator connected to said electrical connection, said display having a lighted output for viewing through said lens on either side of said nozzle.
A display system for indicating breathing gas pressure of a self-contained breathing apparatus (SCBA) comprising:
- a high pressure connection to a source of breathing gas for said SCBA;
- a transducer assembly for connection to said high pressure connection;
- a source of battery power connected to said transducer assembly;
- a processor connected to said transducer assembly;
- an electrical connector connected to said transducer assembly including said processor and said source of batter power;
- a mask having a lens and a nozzle passing through said lens;
- a second stage regulator adapted for connection to said nozzle, said second stage regulator having a bifurcated display for connection to said electrical connector;
- and,
- a passage on either side of said nozzle for viewing said bifurcated display on either side of said nozzle.
A method for displaying breathing gas pressure in a self-contained breathing apparatus (SCBA) comprising:
- providing a SCBA having a source of breathing gas;
- providing a transducer assembly fluidically connected to said source of breathing gas;
- providing a mask with a lens and a breathing gas nozzle;
- connecting a second stage regulator to said nozzle;
- and,
- displaying pressure values of said source of breathing gas on said second stage regulator and through the lens of said mask in a bifurcated manner.
Dependencies are inferred from the claim text.