Gas separation: apparatus – Electric field separation apparatus – Electric charge produced by friction
Patent
1995-10-19
1997-11-25
Smith, Duane S.
Gas separation: apparatus
Electric field separation apparatus
Electric charge produced by friction
55486, 55495, 55504, 55524, 55DIG35, 55DIG39, 96134, 454246, 454283, 454287, B03C 330, B01D 4610
Patent
active
056907192
ABSTRACT:
A filter apparatus for mounting over an opening at an end of a forced air system duct has a filter frame with sidewalls between open front and back ends and a channel which opens inwardly of the sidewalls. At the front end is a sheet of preferably self charging electrostatic washable filter material behind a grill, both of which are peripherally disposed within the channel and are sized and sufficiently flexible so as to be removably insertable into the channel. A second sheet of a second filter material, preferably including activated charcoal, may be disposed in the channel behind the first sheet of filter material. The filter material may be made of a woven polypropylene and the sheet may have heat sealed finished edges. A wall mount having a support frame for mounting on a wall around the opening which extends through the wall is sized and operable to support the filter frame. The support frame may be mounted to a wall. A securing lock may be used to lock the filter frame in place within the support frame and may have a pin slideably and tightly disposed through aligned apertures in the filter and support frames.
REFERENCES:
patent: 637519 (1899-11-01), Mertins
patent: 943298 (1909-12-01), Brown
patent: 1385502 (1921-07-01), Smith et al.
patent: 1429811 (1922-09-01), Tynan
patent: 1694089 (1928-12-01), Wright
patent: 1726792 (1929-09-01), Altman et al.
patent: 1737532 (1929-11-01), Allen
patent: 1739372 (1929-12-01), Pirchio
patent: 1854569 (1932-04-01), Welch
patent: 1886460 (1932-11-01), Anderson
patent: 2050605 (1936-08-01), Gordon et al.
patent: 2493257 (1950-01-01), Malme
patent: 2557279 (1951-06-01), Greenberg
patent: 2575499 (1951-11-01), Manow
patent: 2595833 (1952-05-01), Flaherty
patent: 2754747 (1956-07-01), Bertling
patent: 2825500 (1958-03-01), McLean
patent: 2959832 (1960-11-01), Baermann
patent: 2999275 (1961-09-01), Blume, Jr.
patent: 3003581 (1961-10-01), Greason
patent: 3019127 (1962-01-01), Czerwonka et al.
patent: 3040501 (1962-06-01), Pietsch
patent: 3046719 (1962-07-01), Tropiano
patent: 3124725 (1964-03-01), Leguillon
patent: 3136720 (1964-06-01), Baermann
patent: 3159983 (1964-12-01), Metcalfe
patent: 3187662 (1965-06-01), Kreuttner
patent: 3203338 (1965-08-01), Dry
patent: 3225679 (1965-12-01), Meyer
patent: 3358578 (1967-12-01), Meyer
patent: 3382985 (1968-05-01), Muehl
patent: 3388535 (1968-06-01), Nash
patent: 3458130 (1969-07-01), Juhlin
patent: 3494113 (1970-02-01), Kinney
patent: 3679505 (1972-07-01), Hinderaker et al.
patent: 3768235 (1973-10-01), Meyer et al.
patent: 3823926 (1974-07-01), Bracich
patent: 3831765 (1974-08-01), Flynn et al.
patent: 3905787 (1975-09-01), Roth
patent: 3912473 (1975-10-01), Wilkins
patent: 3941034 (1976-03-01), Helwig et al.
patent: 3999969 (1976-12-01), Shuler
patent: 4047914 (1977-09-01), Hansen et al.
patent: 4065262 (1977-12-01), Petroff
patent: 4175936 (1979-11-01), Lough et al.
patent: 4334899 (1982-06-01), McConnell
patent: 4470834 (1984-09-01), Fasanaro et al.
patent: 4504290 (1985-03-01), Pontius
patent: 4518402 (1985-05-01), Dargel
patent: 4724749 (1988-02-01), Hedrick
patent: 4762053 (1988-08-01), Wolfert
patent: 4961849 (1990-10-01), Hull et al.
patent: 5100445 (1992-03-01), Johnson et al.
patent: 5107580 (1992-04-01), Watanabe
patent: 5176570 (1993-01-01), Liedl
patent: 5240487 (1993-08-01), Kung
patent: 5240653 (1993-08-01), Ramkissoon
patent: 5249765 (1993-10-01), Garcia
patent: 5266091 (1993-11-01), McDonald
patent: 5421862 (1995-06-01), Davis
patent: 5472380 (1995-12-01), Sarazen, Jr. et al.
patent: 5525145 (1996-06-01), Hodge
Rosen Steven J.
Smith Duane S.
LandOfFree
Removable filter for a forced air duct grill does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Removable filter for a forced air duct grill, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Removable filter for a forced air duct grill will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2103012