Liquid purification or separation – Processes – Separating
Reexamination Certificate
2006-08-18
2009-12-15
Reifsnyder, David A (Department: 1797)
Liquid purification or separation
Processes
Separating
C210S791000, C210S805000, C210S806000, C210S107000, C210S194000, C210S304000, C210S512100, C209S012100, C209S725000
Reexamination Certificate
active
07632416
ABSTRACT:
A variety of improved hydroclone based fluid filtering systems are described. The hydroclones generally include a tank having an internal chamber and a filter (preferably a surface filter) that is positioned within the internal chamber. The filter defines a filtered fluid chamber within the internal chamber of the tank. The hydroclone may be operated such that a vortex of flowing fluid is formed between the chamber wall and the filter with the filter being located in the center of the vortex. With this arrangement, the filter acts as a cross-flow filter. In one aspect of the invention, the filter is a stepped filter. In another aspect of the invention, the filter is an surface filter, as for example, an electroformed metal surface filter. In some preferred embodiments, the openings in the filter are arranged as slots that extend substantially vertically so that they are oriented substantially perpendicular to the flow path of fluid flowing in the adjacent portion of the vortex. In another aspect of the invention, a circulating cleaning assembly is provided in the hydroclone region. The cleaning assembly is arranged to help clean the filter and is driven by the vortex of flowing fluid formed in the hydroclone region of the internal chamber. In yet another aspect of the invention, improved hydroclone intake structures are described. The described hydroclones may be used to filter water and other fluids in a wide variety of applications.
REFERENCES:
patent: 1107485 (1914-08-01), Bowser
patent: 1919653 (1933-07-01), Hill
patent: 2788087 (1957-04-01), Lenehan
patent: 3061098 (1962-10-01), Brezinski
patent: 3285422 (1966-11-01), Wiley
patent: 3529724 (1970-09-01), Maciula et al.
patent: 4298465 (1981-11-01), Druffel
patent: 4698156 (1987-10-01), Bumpers
patent: 5407584 (1995-04-01), Broussard, Sr.
patent: 5478484 (1995-12-01), Michaluk
patent: 5879545 (1999-03-01), Antoun
patent: 6117340 (2000-09-01), Carstens
International Search Report dated Aug. 17, 2006, from related PCT Application No. PCT/US06/32457.
Written Opinion dated Dec. 14, 2006, from related PCT Application No. PCT/US06/32457.
Beyer Law Group LLP
Clean Filtration Technologies, Inc.
Reifsnyder David A
LandOfFree
Hydroclone based fluid filtration system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydroclone based fluid filtration system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydroclone based fluid filtration system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4109204