Scan testable filter housing assembly for exhaust applications

Measuring and testing – Sampler – sample handling – etc. – With constituent separation

Reexamination Certificate

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Details

C073S037000, C073S040000, C073S049700, C055S385300

Reexamination Certificate

active

11197272

ABSTRACT:
A filter housing assembly for exhaust applications and method of testing the same is provided. In one embodiment, the filter housing assembly includes a housing having a filter receiving aperture, a first air flow port configured to couple the housing to an exhaust system and a second air flow port sized to deliver a flow capable of providing at least 75 feet per minute of air flow through the filter receiving aperture. A filter element is sealingly disposed in the filter receiving aperture of the housing. A cap is provided that operably seals the second air flow port when not in use. In another embodiment, a method for testing a filter housing assembly for exhaust applications includes providing air through a filter element disposed in the housing in a direction opposite an operational air flow direction, leak testing the filter element from a roomside of the filter element, and, flowing air through the filter element after leak testing in the operational direction.

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Owner's Manual KA-464-A, “MicroPleat HEPA Fan/Filter Modulte”, Airguard, a Clarcor company, Feb. 4, 2004.□□http://www.airguard.com.
ESH manual, “Work Enclosures and Local Exhaust Systems for Toxic and Radioactive Materials”, vol. II: Health & Safety—Controls and Hazards—> Part 12: General H&S Controls—Safety Equipment and Facilities, Jun. 19, 2001. http://www.llnl.gov/es—and—h/hsm/doc—12.04/doc12-04.html.
“Pharmaseal”, Product sheet 3420-0303, Camfil Farr, Inc. Washington NC, © Camfil Farr, Date Unknown.

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