Gas separation – Plural serial basically diverse separating media – Plural stages in unitary casing
Reexamination Certificate
2007-02-20
2007-02-20
Hopkins, Robert A. (Department: 1724)
Gas separation
Plural serial basically diverse separating media
Plural stages in unitary casing
C055S337000, C055S343000, C055S349000, C055S459100, C055SDIG030, C015S350000, C015S353000
Reexamination Certificate
active
10824491
ABSTRACT:
A method for filtering a dirty air stream in a vacuum cleaner to obtain a clean air stream comprises subjecting the dirty air stream to a first cyclonic separation stage to obtain a partially cleaned air stream and subjecting the partially cleaned air stream to an electronic filtration stage and optionally a second cyclonic separation stage to obtain the clean air stream. The electronic filtration stage is optionally removable with a cyclonic cleaning stage from the vacuum cleaner. The electronic filtration stage is optionally an electrostatic precipitator which utilizes air flow through the vacuum cleaner to generate the voltage used by the electrostatic precipitator.
REFERENCES:
patent: 450372 (1891-04-01), Morse
patent: 883413 (1908-03-01), Mahony
patent: 1023082 (1912-04-01), Kluge
patent: 1127896 (1915-02-01), Keller
patent: 1369939 (1921-03-01), Shaffer
patent: 1752231 (1930-03-01), Clarkson
patent: 1759947 (1930-03-01), Lee
patent: 1798510 (1931-03-01), Winkslow et al.
patent: 1826798 (1931-10-01), Lee
patent: 1897144 (1933-02-01), Prouty
patent: 1937765 (1933-12-01), Leathers
patent: 2014287 (1935-10-01), Newman
patent: 2143421 (1939-01-01), Loehr et al.
patent: 2171248 (1939-09-01), Van Berkel
patent: 2267764 (1941-12-01), Taylor
patent: 2300266 (1942-10-01), Smellie
patent: 2392872 (1946-01-01), Wolfe
patent: 2397872 (1946-04-01), Kovacs
patent: 2397980 (1946-04-01), Petri
patent: 2402845 (1946-06-01), Rodman
patent: 2405625 (1946-08-01), Whiton et al.
patent: 2595752 (1952-05-01), Batts
patent: 2608268 (1952-08-01), Gerber
patent: 2672642 (1954-03-01), Tamarin et al.
patent: 2681124 (1954-06-01), Van der Kolk
patent: 2822060 (1958-02-01), Udovich
patent: 2993223 (1961-07-01), Krammes
patent: D197459 (1964-02-01), Jepson et al.
patent: 3200568 (1965-08-01), McNeil
patent: 3235090 (1966-02-01), Bose et al.
patent: 3283480 (1966-11-01), Szego
patent: 3320727 (1967-05-01), Farley et al.
patent: 3425192 (1969-02-01), Davis
patent: 3501014 (1970-03-01), Fitch, Jr. et al.
patent: 3535854 (1970-10-01), Taylor
patent: 3675268 (1972-07-01), Nordeen
patent: 3853518 (1974-12-01), Tu et al.
patent: 3877902 (1975-04-01), Eriksson et al.
patent: 3925045 (1975-12-01), Cheng
patent: 3955236 (1976-05-01), Mekelburg
patent: 4005998 (1977-02-01), Gorman
patent: 4141698 (1979-02-01), Kihlstedt et al.
patent: 4162149 (1979-07-01), Mekelburg
patent: 4172710 (1979-10-01), Van Der Molen
patent: 4198290 (1980-04-01), Summers
patent: 4251241 (1981-02-01), Bothun
patent: 4251368 (1981-02-01), Colman et al.
patent: 4268288 (1981-05-01), Coombs
patent: 4326862 (1982-04-01), Suzuki
patent: 4345572 (1982-08-01), Suzuki et al.
patent: 4352681 (1982-10-01), Dietz
patent: 4373228 (1983-02-01), Dyson
patent: 4377882 (1983-03-01), Dyson
patent: 4390426 (1983-06-01), Vicard
patent: 4398928 (1983-08-01), Kunsagi
patent: 4443234 (1984-04-01), Carlsson
patent: 4571772 (1986-02-01), Dyson
patent: 4573236 (1986-03-01), Dyson
patent: 4588423 (1986-05-01), Gillingham et al.
patent: 4593429 (1986-06-01), Dyson
patent: RE32257 (1986-10-01), Dyson
patent: 4643748 (1987-02-01), Dyson
patent: 4665582 (1987-05-01), Richmond et al.
patent: 4756729 (1988-07-01), Brunnmair et al.
patent: 4826515 (1989-05-01), Dyson
patent: 4853008 (1989-08-01), Dyson
patent: 4853011 (1989-08-01), Dyson
patent: D305269 (1989-12-01), Dyson
patent: 4905341 (1990-03-01), Sunagawa et al.
patent: 5062870 (1991-11-01), Dyson
patent: 5078761 (1992-01-01), Dyson
patent: 5090976 (1992-02-01), Dyson
patent: 5101532 (1992-04-01), Dyson et al.
patent: 5145499 (1992-09-01), Dyson
patent: 5160356 (1992-11-01), Dyson
patent: 5254147 (1993-10-01), Finke
patent: 5267371 (1993-12-01), Soler et al.
patent: D343707 (1994-01-01), Dyson
patent: 5307538 (1994-05-01), Rench et al.
patent: 5350432 (1994-09-01), Lee
patent: 5558697 (1996-09-01), Dyson et al.
patent: 5564160 (1996-10-01), Luebbering
patent: 5584095 (1996-12-01), Redding et al.
patent: 5591253 (1997-01-01), Altman et al.
patent: D382679 (1997-08-01), Dyson
patent: 5755007 (1998-05-01), Dyson
patent: 5779745 (1998-07-01), Kilstrom
patent: 5935279 (1999-08-01), Kilstrom
patent: 5950274 (1999-09-01), Kilstrom
patent: 6003196 (1999-12-01), Wright et al.
patent: 6012200 (2000-01-01), Murphy et al.
patent: 6146434 (2000-11-01), Scalfani et al.
patent: 6168716 (2001-01-01), Conrad et al.
patent: 6277278 (2001-08-01), Conrad et al.
patent: 6312594 (2001-11-01), Conrad et al.
patent: 6334234 (2002-01-01), Conrad et al.
patent: 2005/0050863 (2005-03-01), Oh
patent: 54488 (1985-05-01), None
patent: 2104136 (1994-06-01), None
patent: 2156069 (1996-06-01), None
patent: 260 776 (1926-11-01), None
patent: 1 251 139 (1967-09-01), None
patent: 34 35 214 (1986-04-01), None
patent: 52195 (1936-09-01), None
patent: 69708 (1949-08-01), None
patent: 0 408 862 (1991-01-01), None
patent: 0 815 788 (1998-01-01), None
patent: 0 836 827 (1998-04-01), None
patent: 0 839 489 (1998-05-01), None
patent: 1 016 090 (1952-10-01), None
patent: 1 037 980 (1953-09-01), None
patent: 1 094 603 (1955-05-01), None
patent: 2 670 137 (1992-06-01), None
patent: 762070 (1950-12-01), None
patent: 2 108 013 (1983-05-01), None
patent: 6 400 783 (1964-08-01), None
patent: 148023 (1961-03-01), None
patent: 148023 (1961-07-01), None
patent: 1042812 (1983-09-01), None
patent: 82 00451 (1982-02-01), None
patent: WO 95/16382 (1995-06-01), None
patent: WO96/22726 (1996-01-01), None
patent: WO96/19936 (1996-04-01), None
patent: WO96/19937 (1996-04-01), None
patent: WO96/19293 (1996-06-01), None
patent: WO96/19294 (1996-06-01), None
patent: WO96/21389 (1996-07-01), None
patent: WO 96/27446 (1996-09-01), None
patent: WO 98/02080 (1998-01-01), None
patent: WO98/27857 (1998-02-01), None
patent: WO 98/10691 (1998-03-01), None
patent: WO98/10691 (1998-03-01), None
patent: WO98/23381 (1998-04-01), None
patent: WO98/02080 (1998-06-01), None
patent: WO 98/23381 (1998-06-01), None
patent: WO98/33424 (1998-06-01), None
patent: WO 98/27857 (1998-07-01), None
patent: WO 98/33424 (1998-08-01), None
Conrad Helmut Gerhard
Conrad Wayne Ernest
Bereskin & Parr
Hopkins Robert A.
Mendes da Costa Philip C.
Polar Light Limited
LandOfFree
Vacuum cleaner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum cleaner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum cleaner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3854982