US5683479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner having scavenger arrangement
Assignee: Donaldson Co Inc
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Filing: 1996-10-22
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Granted: 1997-11-04
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Expires: 2016-10-22
Abstract
Abstract An air cleaner construction including a precleaner arrangement, a filter assembly and a scavenger arrangement is provided. In the precleaner arrangement, air directed into the air cleaner assembly is subjected to some particulate removal. The air from the precleaner arrangement is then directed into the filter assembly, for further particulate material. The scavenger arrangement is constructed and arranged to scavenge separated particulate material from both the precleaner arrangement and the filter assembly. A pulse jet cleaner assembly is provided to facilitate removal of particulate material from the filter assembly.
Inventors
- 👤 Gary R. Gillingham
- 👤 Peter A. Betts
- 👤 Daniel T. Risch
- 👤 James C. Rothman
- 👤 Fred H. Wahlquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:14
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/16; F02M35/164; B; B01; B01D; B01D46/00; B01D46/0002; B01D46/0005; B01D46/10; B01D46/12; B01D46/121; B01D46/42; B01D46/48; B01D46/52; B01D46/521; B01D46/56; B01D46/62; B01D46/66; B01D46/70; B01D46/71; B01D50/00; B01D50/20; F02M35/02; F02M35/08; F02M35/10; F02M35/10242; F02M35/10262; F02M35/10301; B01D2279/00; B01D2279/60; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
183 words
An air cleaner construction comprising: (a) a filter arrangement including a housing having a bottom well and a sidewall arrangement; said bottom wall and sidewall arrangement defining a housing interior; said sidewall arrangement including a clean air aperture therein; (b) a first filter pack positioned within said filter arrangement and having an exterior filter surface and a clean air space; said first filter pack including a clean air exit therefrom; (c) a seal arrangement constructed and arranged to seal said filter pack within said housing interior and against said sidewall arrangement such that said clean air exit in said first filter pack is in air flow communication with a first air exit aperture in said housing sidewall arrangement; and, (d) a scavenger arrangement constructed and arranged to withdraw separated particulate material from said housing interior; (i) said scavenger arrangement including a first scavenger duct; said first scavenger duct including a first perforated section positioned within said housing interior and on said housing bottom wall; and (ii) said first scavenger duct first perforated section including scavenger flow perforations positioned above said housing bottom wall.
Claim 2
Dependent Claim
183 words
An air cleaner construction comprising: (a) a filter arrangement including a housing having a bottom well and a sidewall arrangement; said bottom wall and sidewall arrangement defining a housing interior; said sidewall arrangement including a clean air aperture therein; (b) a first filter pack positioned within said filter arrangement and having an exterior filter surface and a clean air space; said first filter pack including a clean air exit therefrom; (c) a seal arrangement constructed and arranged to seal said filter pack within said housing interior and against said sidewall arrangement such that said clean air exit in said first filter pack is in air flow communication with a first air exit aperture in said housing sidewall arrangement; and, (d) a scavenger arrangement constructed and arranged to withdraw separated particulate material from said housing interior; (i) said scavenger arrangement including a first scavenger duct; said first scavenger duct including a first perforated section positioned within said housing interior and on said housing bottom wall; and (ii) said first scavenger duct first perforated section including scavenger flow perforations positioned above said housing bottom wall.
Claim 3
Dependent Claim
39 words
An air cleaner construction according to claim 1 wherein: (a) said sidewall arrangement includes an end wall; and (b) said first scavenger duct includes a nonperforated section positioned in extension along said end wall and within said housing interior.
Claim 4
Dependent Claim
69 words
An air cleaner construction according to claim 1 wherein: (a) said sidewall arrangement includes first and second, opposite, end walls; (b) said first air exit aperture is positioned in said first end wall; and (c) said first scavenger duct first perforated section has a longitudinal direction of extension from adjacent said second end wall toward said first end wall; (i) said first perforated section having an upper, perforated, surface.
Claim 5
Dependent Claim
20 words
An air cleaner construction according to claim 3 wherein: (a) said first scavenger duct first perforated section has non-perforated sidewalls.
Claim 6
Dependent Claim
53 words
An air cleaner construction according to claim 4 wherein: (a) said first scavenger duct first perforated section includes first and second sidewalls oriented to extend in directions generally converging toward one another, in extension longitudinally from a portion of said first perforated section adjacent said second end wall toward said first end wall.
Claim 7
Dependent Claim
32 words
An air cleaner arrangement according to claim 5 wherein: (a) said first scavenger duct first perforated section terminates at a closed, narrow, end adjacent to, and spaced from, said first end wall.
Claim 8
Dependent Claim
74 words
An air cleaner arrangement according to claim 6 wherein: (a) said first perforated section upper surface includes a first one-third of extension immediately adjacent said first closed end, and a second one-third of extension immediately adjacent said first one-third of extension; said first one-third of extension of said first perforated section upper surface including a greater amount of total aperture area, in said first perforated section upper surface, then said second one-third of extension.
Claim 9
Dependent Claim
30 words
An air cleaner arrangement according to claim 7 wherein: (a) said first scavenger duct first perforated section upper surface is positioned at least 2.5 cm above said housing bottom wall.
Claim 10
Dependent Claim
48 words
An air cleaner arrangement according to claim 8 wherein: (a) a total open area of apertures in said scavenger duct first perforated section upper surface is sufficient to maintain a velocity of air flow entering said scavenger duct, during use, within a range of 30-80 feet per second.
Claim 11
Dependent Claim
34 words
An air cleaner arrangement according to claim 9 wherein: (a) said first perforated section upper surface includes a plurality of scavenge apertures therein, each of which is within the size range of 0.63-0.79 cm.
Claim 12
Dependent Claim
50 words
An air cleaner arrangement according to claim 10 wherein: (a) said first scavenger duct is sized and configured for an air flow velocity therethrough, during scavenging operation, of about 45 feet per second, when said air cleaner is in use in a vehicle traveling at about 20 miles per hour.
Claim 13
Dependent Claim
22 words
An air cleaner arrangement according to claim 10 wherein: (a) said first scavenger duct first perforated section has a generally rectangular cross-section.
Claim 14
Dependent Claim
23 words
An air cleaner construction according to claim 12 wherein: (a) said first scavenger duct first perforated section comprises a four sided, enclosed, tube.
Claim 15
Dependent Claim
77 words
An air cleaner construction according to claim 1 wherein: (a) said scavenger arrangement includes a second perforated scavenger duct; said second scavenger duct including a first perforated section positioned within said housing interior and on said housing bottom wall; (i) said second scavenger duct first perforated section including scavenger flow perforations positioned above said housing bottom wall; and, (ii) said first scavenger duct and said second scavenger being positioned with said first filter pack oriented generally therebetween.
Claim 16
Dependent Claim
32 words
An air cleaner construction according to claim 14 including: (a) a second filter pack; one of said first and second scavenger ducts being positioned generally between said first and second filter packs.
Claim 17
Dependent Claim
20 words
An air cleaner construction according to claim 1 wherein: (a) said first filter pack comprises a V-shaped air filter pack.
Claim 18
Dependent Claim
109 words
An air cleaner construction according to claim 1 wherein: (a) said first scavenger duct first perforated section has non-perforated sidewalls; (b) said first scavenger duct first perforated section terminates at a closed, narrow, end adjacent to, and spaced from, said first end wall; and, (c) said first perforated section upper surface includes a first one-third of extension immediately adjacent said first closed end, and a second one-third of extension immediately adjacent said first one-third of extension; said first one-third of extension of said first perforated section upper surface including a greater amount of total aperture area, in said first perforated section upper surface, then said second one-third of extension.
Claim 19
Dependent Claim
45 words
An air cleaner arrangement according to claim 17 wherein: (a) said first scavenger duct first perforated section upper surface is positioned at least 2.5 cm above said housing bottom wall; and, (b) said first scavenger duct first perforated section comprises a four sided, enclosed, tube.
Claim 20
Dependent Claim
34 words
An air cleaner arrangement according to claim 18 wherein: (a) said first perforated section upper surface includes a plurality of scavenge apertures therein, each of which is within the size range of 0.63-0.79 cm.
References Cited (Backward Citations)
US3393498A
Cited
US3383841A
Cited
US3870489A
Cited
US3936902A
Cited
US4009011A
Cited
US4127397A
Cited
US4220457A
Cited
US4303423A
Cited
US4242115A
Cited
US4299597A
Cited
US4266953A
Cited
US4331459A
Cited
WO1982001325A1
Cited
US4359330A
Cited
US4364751A
Cited
US4452616A
Cited
US4411674A
Cited
US4482365A
Cited
US4482366A
Cited
US4537608A
Cited
US4514193A
Cited
US4746340A
Cited
US4767425A
Cited
US5401285A
Cited
US5575826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-03 | 2001-05-05 | 2001-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-03 | 2005-05-05 | 2005-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-03 | 2009-05-05 | 2009-11-04 | $7700.00 | Window Closed / Lapsed |