Liquid purification or separation – Processes – Separating
Reexamination Certificate
2006-07-25
2006-07-25
Kim, John (Department: 1723)
Liquid purification or separation
Processes
Separating
C210S781000, C210S780000, C210S360100, C210S360200, C210S378000, C210S380100, C494S049000, C494S043000, C494S046000, C494S053000
Reexamination Certificate
active
07081206
ABSTRACT:
The filter removes volatile, particulate and water-based contaminants from a fluid, such as lubricating oil, of a different density than the contaminants. The device has a cone shaped, jet-propelled, helical-spiral wiper rotor creating centrifugal forces that separate the volatile and heavier particulate matter. Ports in a base assembly facilitate removal of the separated contaminants. A settling tank with vertical grid filter minimizes turbulence for further separation of heavier particulate matter. A volatile tank with vertical grid filter and flow restrictor minimizes turbulence to allow volatiles to rise from the fluid. A filter tank filters out remaining particulate matter from the fluid. A combination of flow restrictors and baffles minimize cross-contamination, thereby maximizing purity of oil returned to the engine. The collection tanks are easily cleaned and reused. The compact design minimizes oil volume necessary for purification. Aluminum housing and by-pass design maximize engine oil cooling to enhance viscosity maintenance.
REFERENCES:
patent: 4024062 (1977-05-01), Holthuis
patent: 4640772 (1987-02-01), Graham
patent: 6423225 (2002-07-01), Wong et al.
patent: 6709575 (2004-03-01), Verdegan et al.
Investors Precision Manufacturing, Inc.
Kim John
Menon Krishnan S.
Ryan Richard A.
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