Gas separation: processes – Deflecting – Centrifugal force
Reexamination Certificate
2003-04-04
2008-11-18
Hopkins, Robert A (Department: 1797)
Gas separation: processes
Deflecting
Centrifugal force
C055S337000, C055S385300, C055S396000, C055S401000, C055S423000, C055S437000
Reexamination Certificate
active
07452409
ABSTRACT:
A powered air cleaning system (31) and air cleaning method are disclosed. The system comprises a flow path (22) extending through the system from an air inlet (4) to a clean air outlet (5). A motor-driven fan (24) located along the flow path draws particulate debris laden air into the inlet and rotates it about an axis (A-A) to form a rotating flow that stratifies the debris laden air with the heaviest particles in the outermost orbits of the rotating flow. An ejector port (33) is provided for ejecting particulate debris laden air from the stratified rotating flow in the system to the environment. An air filter (9) located within the rotating flow and across the flow path upstream of the outlet filters air from the innermost orbits of the stratified rotating flow. The motor-driven fan is operated to maintain a positive air pressure in the system on the filter even with cyclic air flow demands so that the rotating air flow continually sweeps the outside surface of the air filter to minimize buildup of debris on the filter.
REFERENCES:
patent: 4048911 (1977-09-01), Petersen
patent: 5545241 (1996-08-01), Vanderauwera et al.
patent: 5656050 (1997-08-01), Moredock
patent: 5766315 (1998-06-01), Moredock
patent: 6319304 (2001-11-01), Moredock
patent: 6338745 (2002-01-01), Moredock et al.
patent: 6406506 (2002-06-01), Moredock et al.
patent: 6425943 (2002-07-01), Moredock
patent: 6878189 (2005-04-01), Moredock
patent: 7056368 (2006-06-01), Moredock et al.
patent: 2005/0172587 (2005-08-01), Moredock et al.
patent: 2007/0173188 (2007-07-01), Moredock et al.
patent: A-2642662 (1990-08-01), None
International Search Report; International Application No. PCT/US03/10238; International Filing Date: Apr. 4, 2003.
Ehrenberg Eric L.
Moredock James G.
Antonelli, Terry Stout & Kraus, LLP.
Hopkins Robert A
Sy-Klone Company, Inc.
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