초록 ▼

A portable breathing device is disclosed comprising an upper conduit section having an opening in one end to communicate with at least the user\s oral passages and a breathing aperture in the other end and a lower flexible and inflatable respiratory gas container section for receiving and containing

A portable breathing device is disclosed comprising an upper conduit section having an opening in one end to communicate with at least the user\s oral passages and a breathing aperture in the other end and a lower flexible and inflatable respiratory gas container section for receiving and containing ambient respiratory gases. The respiratory gas container section has an upper opening communicating with the breathing aperture of the upper section and a lower opening relatively larger than the upper opening for communicating with ambient respiratory gases to thereby permit the user to entrap a volume of ambient respiratory gases within the respiratory gas container section. A seal device is provided for releasably sealing the lower opening of the respiratory gas container section to ensure containment of the entrapped volume of ambient respiratory gases. In the preferred embodiment the upper conduit section is provided with a facial mask adapted to enclose the oral and nasal passages of the user.

대표청구항 ▼

A portable autonomous breathing device comprising: an upper respiratory gas conduit section having a first aperture at one end adapted to communicate with at least the oral passages of a user and a second aperture at the other end adapted to receive respiratory gases; a facial mask member attached a

A portable autonomous breathing device comprising: an upper respiratory gas conduit section having a first aperture at one end adapted to communicate with at least the oral passages of a user and a second aperture at the other end adapted to receive respiratory gases; a facial mask member attached about the first aperture of said conduit section; a lower inflatable respiratory gas container section for receiving and containing ambient respiratory gases at ambient atmospheric pressure; said respiratory gas container section having an upper opening fluidically communicating with the second aperture of said upper conduit section and a continuous flexible edge portion defining a lower opening relatively larger than said upper opening for communicating with ambient respiratory gases thereby permitting the user to manually entrap a volume of ambient respiratory gases within said respiratory gas container section at ambient atmospheric pressure; means for releasably sealing at ambient atmospheric pressure said lower opening of said respiratory gas container section to contain the manually entrapped volume of ambient respiratory gases at ambient atmospheric pressure; a first valve means mounted within the conduit section between the first and second apertures permitting inhalation of respiratory gases therethrough; and a second valve means mounted in the wall of the conduit section between the first valve means and the first aperture of the conduit section permitting exhalation gases to pass therethrough to the ambient atmosphere and resistant to inhalation of ambient atmosphere therethrough.