Liquid purification or separation – Processes – Separating
Reexamination Certificate
2002-08-13
2004-10-19
Reifsnyder, David A. (Department: 1723)
Liquid purification or separation
Processes
Separating
C210S232000, C210S360100, C210S377000, C210S380100, C210S388000, C210S785000, C494S036000, C494S037000, C494S044000, C494S047000, C494S055000, C494S060000, C494S082000
Reexamination Certificate
active
06805805
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
This disclosure relates in general to the field of centrifugal separators, and more particularly to a system and method for receptacle wall vibration in a centrifuge.
BACKGROUND OF THE INVENTION
Prior art of the inventors claims the use of receptacles or hoppers to form most of the outer wall of a centrifugal device (allowed U.S. Pat. No. 6,033,564, Pending 09/11 5/527, and PPA 6/286,745).
The function of these receptacles is to: (1) continuously collect the heavy materials thrown outwards from the center of a centrifugal device; (2) channel and direct these collected heavy materials outward towards and through openings that perforate a centrifuge's outer wall; and (3) by use of various kinds of shapes, slopes and angles in the walls of the receptacles (PPA 6/286,745), cause the heavy materials to become increasingly compressed and compacted, due to centrifugal force driving them into the ever more confined volume formed by inward sloping receptacle walls converging to the outlet, which is an opening or a nozzle.
SUMMARY OF THE INVENTION
Sequence of Effects with Vibration Added to Centrifugal Force and Wall Compression
This invention is an improvement to any centrifugal device which achieves liquid/solid separation by spinning a fluid, which fluid may be comprised of a liquid, a liquid-liquid mixture, a gas or a liquid-gas mixture. The centrifugal force achieved by spinning drives the heavier materials outwards from the device's center, where such heavier materials contact the sloped and converging walls of collecting receptacles leading to exit outlets or nozzles. These heavier materials may be hard or soft solids, or they may be gelatinous or viscous materials contained in the fluid. The centrifugal force tends to propel such heavier materials from the fluid and outwards into the ever-smaller volume created by the converging and narrowing walls of the receptacles.
However, when the outbound materials strike and land on the inwardly sloping walls of the receptacles, friction against these walls tends to oppose and restrict their continuing and further outward movement. To the degree that these materials thus stick on the sloped walls, their continued outward movement and compression in the ever narrowing outermost zone is impeded.
Causing the receptacle walls to vibrate interferes with this friction between the walls and the outwardly thrown heavier materials, i.e., shears the frictional bond between them, and thus enables their continued and additional outward movement and thus additional compression of them. The added compression thus enabled by applying vibration to the receptacle walls further increases separation of various sorts of heavier materials from a fluid and/or yields removed solids from said fluid which are significantly drier due to the more thorough removal of the liquid portions depending on the process goal.
REFERENCES:
patent: 2028168 (1936-01-01), Roberts
patent: 2538529 (1951-01-01), Komline
patent: 2688437 (1954-09-01), Monnet
patent: 3327401 (1967-06-01), Stamos et al.
patent: 3937317 (1976-02-01), Fleury, Jr.
patent: 3960318 (1976-06-01), Dahlberg
patent: 3967778 (1976-07-01), Hunwick
patent: 3977515 (1976-08-01), Lewoczko
patent: 4005817 (1977-02-01), Charlton
patent: 4015773 (1977-04-01), Thylefors
patent: 4067494 (1978-01-01), Willus
patent: 4070290 (1978-01-01), Crosby
patent: 4103822 (1978-08-01), Stroucken
patent: 4251023 (1981-02-01), Hohne
patent: 4298162 (1981-11-01), Hohne
patent: 4311270 (1982-01-01), Hovstadius
patent: 4331270 (1982-05-01), Humlong
patent: 4343431 (1982-08-01), Wehling
patent: 4375870 (1983-03-01), Bodelson
patent: 4379976 (1983-04-01), Pitchford
patent: 4381849 (1983-05-01), Conant
patent: 4430221 (1984-02-01), Spiewok
patent: 4504262 (1985-03-01), Forsberg
patent: 4505697 (1985-03-01), Lee et al.
patent: 4519496 (1985-05-01), Ludvegsen
patent: 4569761 (1986-02-01), Spiewok et al.
patent: 4581896 (1986-04-01), Andresen
patent: 4629564 (1986-12-01), Pinato
patent: 4643709 (1987-02-01), Lee et al.
patent: 4698053 (1987-10-01), Stroucken
patent: 4701158 (1987-10-01), Inge et al.
patent: 4710159 (1987-12-01), Gullers
patent: 4721505 (1988-01-01), Inge et al.
patent: 4729759 (1988-03-01), Krook
patent: 4784634 (1988-11-01), Schiele
patent: 4813923 (1989-03-01), Johansson
patent: 4820256 (1989-04-01), Nordstrom
patent: 4840612 (1989-06-01), Pallmar
patent: 4861329 (1989-08-01), Borgstrom et al.
patent: 4978331 (1990-12-01), Luchetta
patent: 5045049 (1991-09-01), Lantz
patent: 5052996 (1991-10-01), Lantz
patent: 5197939 (1993-03-01), Cederkvist et al.
patent: 5202024 (1993-04-01), Andersson et al.
patent: 5244584 (1993-09-01), Schlieperskoetter
patent: 5362292 (1994-11-01), Borgstrom et al.
patent: 5374234 (1994-12-01), Madsen
patent: 5380434 (1995-01-01), Paschedag
patent: 5397471 (1995-03-01), Rodebush
patent: 5429581 (1995-07-01), Michaud
patent: 5601522 (1997-02-01), Piramoon
patent: 5759744 (1998-06-01), Brueck et al.
patent: 6033564 (2000-03-01), Kirker et al.
patent: 6149572 (2000-11-01), Knelson
patent: 6248053 (2001-06-01), Ehnstrom et al.
patent: 6312610 (2001-11-01), Kirker et al.
patent: 6322698 (2001-11-01), Rios et al.
patent: 1 632 324 (1970-10-01), None
patent: 0346056 (1989-12-01), None
patent: 870540 (1942-03-01), None
patent: 1 038 726 (1953-10-01), None
patent: 2001-113204 (1999-10-01), None
patent: 2001113204 (2001-04-01), None
patent: WO 00/02663 (2000-01-01), None
patent: 02/42004 (2002-05-01), None
English Abstract from the Patent Abstracts of Japan along with a Machine Translation of the rest of the specification of Japanese Patent Publication No. JP 2001113204 A was published on Apr. 2001.*
International Search Report PCT/US 99/15891, 6 pages.
International Search Report PCT/US 02/36830, 8 pages.
Search Report from PCT US 02/13186, Sep. 10, 2002.
Fuller Berkeley F.
Kirker Curtis
Baker & Botts L.L.P.
Phase Inc.
Reifsnyder David A.
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