Gas separation – With means securing or retaining separating media – Internal frame or support means
Patent
1992-06-05
1993-07-27
Hart, Charles
Gas separation
With means securing or retaining separating media
Internal frame or support means
55494, 55501, 55511, 210446, B01D 4610
Patent
active
052307271
ABSTRACT:
An inexpensive, bi-directional, low flow resistance air filter for medical ventilation equipment and the like includes a disposable shell possessing a cylindrical conduit terminating in an exponentially curved radially outwardly flaring surface. The exponentially curved construction minimizes dead space and hence also flow resistance Radially and axially spaced stepped annular surfaces connected by short axially extending cylindrical sidewall portions at a distal end of the shell function as coupling and sealing surfaces. A ring of adhesive applied adjacent a peripheral edge of an electret filter disk mounts the filter disk internally within the shell. An elastic retaining band detachably secures an equipment connection adapter to the shell, such that a technician may easily and quickly replace the shell and filter. The equipment connection adapter possesses clamping ring and coupling rim surfaces dimensioned in close conformance with the coupling and sealing surfaces of the shell to ensure a fluid tight connection. The filter assembly allows rapid replacement of contaminated filter components to protect patients from diseases caused by bacterial and viral microorganisms, while minimizing medical waste.
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Pound Robert D.
Wood Lockett E.
Cybermedic, Inc.
Hart Charles
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