Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Reexamination Certificate
2005-04-06
2010-02-09
Bianco, Patricia M (Department: 3772)
Surgery
Respiratory method or device
Means for removing substance from respiratory gas
C128S201250, C128S201290, C128S204260, C128S205120, C128S205110, C128S205220, C128S205270, C128S205280, C128S206110, C128S205290, C128S206160, C128S201260, C128S202260, C095S090000, C095S091000, C095S273000, C096S108000, C096S121000, C096S133000, C096S142000, C055S467000, C055S471000, C055S472000, C055S473000, C055S484000, C055SDIG035
Reexamination Certificate
active
07658190
ABSTRACT:
A powered air-purifying respirator that includes an enclosure, defining a single contiguous enclosed interior, an inlet duct, including an inlet and a distribution portion, that guides ambient air to the interior of the enclosure, a plurality of filter canisters disposed within the interior of the enclosure, and a blower that forces air through the at least one inlet, into the interior of the enclosure and through the plurality of filter canisters to produce filtered air suitable for breathing. A valve controls the flow of ambient air through the inlet duct. A fluid dam, disposed in an air path between the inlet and the filter canisters prevents liquids from reaching the filter canisters. The enclosure is reinforced and is adapted to provide protection for the filter canister from flame and heat while the filter canister is in use. A recirculation valve recycles previously-filtered air back into the enclosure.
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Morgan, III Judge W.
Parson William Eugene
Phifer Jerry Allen
Williams Robert Daniel
Bianco Patricia M
Patel Nihir
Pratt Wyatt
Small Dean D.
Small Patent Law Group
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