US5312467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter assembly
Assignee: Individual
•
Filing: 1992-10-23
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Granted: 1994-05-17
•
Expires: 2012-10-23
Abstract
Abstract A window air filtering assembly for repulsive filtering of pollen, dirt and small particulate matter. The air filtering assembly includes a frame assembly and a filtering medium disposed in the frame assembly. The filtering medium is formed from woven, smooth-surfaced microfilament strands having at least 16% of its surface area open.
Inventors
- 👤 Michael Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:51
CPC Classifications
F; F24; F24F; F24F8/00; F24F8/10; F24F8/108; A; A62; A62B; A62B23/00; A62B23/02; A62B23/025; B; B01; B01D; B01D39/00; B01D39/08; B01D39/083; B01D39/086; B01D39/14; B01D39/16; B01D39/1692; B01D46/00; B01D46/10; B03; B03C; B03C3/00; B03C3/28; F24F7/00; F24F7/003; B01D2239/00; B01D2239/12; B01D2239/1233; B01D2275/00; B01D2275/20; B01D2275/203; F24F2007/004; F24F2221/00; F24F2221/20; F24F8/95; F24F8/96; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y10; Y10S; Y10S95/00; Y10S95/90; Y10S95/901
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
An air filter asssembly comprising: a frame assembly; and a woven filtering medium comprising woven microfilament strands of a diameter of at most 30 microns, said strands being spaced apart by at most 20 microns, and filtering medium disposed in the frame assembly, said filtering medium having at least 16% of its surface area open; wherein said filtering medium is non-entraining and reduces the passage of pollen and dust particles through said air filter, while allowing the free passage of air through said air filter.
Claim 2
Dependent Claim
85 words
An air filter asssembly comprising: a frame assembly; and a woven filtering medium comprising woven microfilament strands of a diameter of at most 30 microns, said strands being spaced apart by at most 20 microns, and filtering medium disposed in the frame assembly, said filtering medium having at least 16% of its surface area open; wherein said filtering medium is non-entraining and reduces the passage of pollen and dust particles through said air filter, while allowing the free passage of air through said air filter.
Claim 3
Dependent Claim
30 words
A window air filter assembly as in claim 1 wherein said filtering medium comprises microfilament strands having a diameter of 15 microns, said strands being spaced apart at 15 microns.
Claim 4
Dependent Claim
30 words
A window air filter assembly as in claim 1 wherein said filtering medium comprises microfilament strands having a diameter of 10 microns, said strands being spaced apart at 7 microns.
Claim 5
Dependent Claim
30 words
A window air filter assembly as in claim 1 wherein said filtering medium comprises microfilament strands having a diameter of 30 microns, said strands being spaced apart at 20 microns.
Claim 6
Dependent Claim
65 words
An air filter assembly for repulsive filtering of particulate matter, said air filter comprising: a laterally-adjustable frame assembly; and a laterally-adjustable woven filtering medium attached to said frame assembly, said filtering medium having at least 16% of its surface area open and comprising woven, smooth-surfaced microfilament strands, said strands having a diameter of at most 30 microns, and being spaced apart at most 20 microns.
Claim 7
Dependent Claim
65 words
An air filter assembly for repulsive filtering of particulate matter, said air filter comprising: a laterally-adjustable frame assembly; and a laterally-adjustable woven filtering medium attached to said frame assembly, said filtering medium having at least 16% of its surface area open and comprising woven, smooth-surfaced microfilament strands, said strands having a diameter of at most 30 microns, and being spaced apart at most 20 microns.
Claim 8
Dependent Claim
81 words
A window air filter assembly as in claim 5 wherein said frame assembly comprises a first frame member and a second frame member, said first and second frame members being attached in cooperable and slidable engagement, a first filtering medium anchor being fixedly attached to the first frame member and a second filtering medium anchor being rotatably attached to the second frame member, said filtering medium being attached at respective ends thereof to said first anchor and to said second anchor.
Claim 9
Dependent Claim
26 words
A window air filter assembly as in claim 5 wherein said microfilament strands have a diameter of 15 microns, said strands being spaced apart 15 microns.
Claim 10
Dependent Claim
26 words
A window air filter assembly as in claim 5 wherein said microfilament strands have a diameter of 10 microns, said strands being, spaced apart 7 microns.
Claim 11
Dependent Claim
26 words
A window air filter assembly as in claim 5 wherein said microfilament strands have a diameter of 30 microns, said strands being spaced apart 20 microns.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |