Portable air-purifying system
First Claim
1. A respirator comprising:
- a face mask comprising an inlet opening and a seal, said inlet opening configured to channel treated air into said face mask, said face mask seal configured to prevent contaminants and untreated air from entering said mask; and
a housing assembly coupled in flow communication to said face mask inlet opening, said housing assembly comprising a first filter assembly, a second filter assembly coupled in flow communication downstream from said first filter assembly, and an ultraviolet light source coupled in flow communication between said first and second filter assemblies, said ultraviolet light source configured to substantially prevent microorganisms discharged from said first filter assembly being discharged to the user through said second filter assembly.
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Accused Products
Abstract
A respirator includes a face mask and a housing assembly coupled in flow communication to the face mask. The face mask includes an inlet opening and a seal. The inlet opening is configured to channel treated air into the face mask. The face mask seal is configured to prevent contaminants and untreated air from entering the mask. The housing assembly includes a first filter assembly, a second filter assembly coupled in flow communication downstream from the first filter assembly, and an ultraviolet light source coupled in flow communication between the first and second filter assemblies. The ultraviolet light source is configured to substantially prevent microorganisms discharged from the first filter assembly from entering the inlet opening through the second filter assembly.
47 Citations
32 Claims
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1. A respirator comprising:
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a face mask comprising an inlet opening and a seal, said inlet opening configured to channel treated air into said face mask, said face mask seal configured to prevent contaminants and untreated air from entering said mask; and
a housing assembly coupled in flow communication to said face mask inlet opening, said housing assembly comprising a first filter assembly, a second filter assembly coupled in flow communication downstream from said first filter assembly, and an ultraviolet light source coupled in flow communication between said first and second filter assemblies, said ultraviolet light source configured to substantially prevent microorganisms discharged from said first filter assembly being discharged to the user through said second filter assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An air-purifying respirator, comprising:
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an enclosure, defining a single substantially contiguous enclosed interior;
at least one inlet that guides ambient air to the interior of said enclosure;
a filter assembly disposed within said enclosure;
a fluid connection apparatus that guides filtered air from an outlet of said filter assembly to be breathed by a user; and
a light source disposed in an air path upstream from said filter assembly, said light source configured to prevent microorganisms from entering said fluid connection apparatus through said filter assembly. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A respirator in accordance with claim 19 wherein said filter assembly further comprises an absorbent media for removing predetermined substances from air channeled to said fluid connection apparatus.
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20. A powered air-purifying respirator (PAPR), comprising:
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a PAPR housing configured to be carried by a user, said PAPR housing comprising at least one inlet port for receiving air to be channeled to the user;
a first filter assembly coupled in flow communication to said at least one housing inlet port externally to said housing;
a second filter assembly coupled in flow communication downstream from said first filter assembly via a flow path defined within said housing;
an ultraviolet light source coupled in flow communication within said flow path, said ultraviolet light source adapted to expose air discharged from said first filter assembly to ultraviolet light for a predetermined amount of time to facilitate preventing microorganisms from being inhaled by the user; and
a blower that draws air into said PAPR housing through said first filter assembly. - View Dependent Claims (21, 22, 23, 24)
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25. A breathing system comprising:
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a powered air-purifying respirator having a PAPR enclosure and a blower that pulls air through said PAPR enclosure, said PAPR enclosure comprising a light source and a filter assembly downstream from said light source;
a facepiece configured to cover a user'"'"'s nose and mouth in a substantially airtight connection; and
an air path coupling said facepiece to said powered air-purifying respirator, said light source configured to facilitate preventing microorganisms from being inhaled by the user through said filter assembly. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification