US5342238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filtering apparatus
Assignee: Individual
•
Filing: 1991-06-04
•
Granted: 1994-08-30
•
Expires: 2011-06-04
Abstract
Abstract An arrangement for filtering the air entering the interior of a vehicle, particularly the interior of a car, includes a coarse filter, a fan unit and a fine-filtering unit. The whole of the arrangement is combined to form a unit which can be fitted to the vehicle in the manner of a conventional, openable roof hatch (b 2). When closed, the hatch has a rear part which projects above the roof of the vehicle and which includes an ambient air intake opening (3) in which the coarse filter is mounted. The hatch also includes a vehicle interior air intake opening (9), a shutter (11) for closing the ambient air intake opening and the interior air intake opening to a desired extent, and at least one outlet opening (8) through which filtered air is blown into the vehicle interior.
Inventors
- 👤 Hans Segerpalm
- 👤 Ante Eklund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:47
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/24; B60H1/26; B60H1/262; B60H3/00; B60H3/06; B60H3/0608
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
An automotive vehicle interior air-filtering arrangement, comprising: a coarse filter (12), a fan unit (4, 5), and a fine-filtering unit (15-17), wherein said arrangement is disposed in a unit adapted to be mounted to a roof of the vehicle in the manner of a conventional, openable roof hatch (2); said hatch having, when closed, a rear part projecting upwardly above a roof of the vehicle and which includes an ambient air intake opening (3) in which said coarse filter is mounted; said hatch also including an interior air intake opening (9) communicating with the vehicle interior, means (11) for closing the ambient air intake opening and the interior air intake opening to desired extents, and at least one outlet opening (8) through which filtered air is blown by the fan unit into the vehicle interior.
Claim 2
Dependent Claim
135 words
An automotive vehicle interior air-filtering arrangement, comprising: a coarse filter (12), a fan unit (4, 5), and a fine-filtering unit (15-17), wherein said arrangement is disposed in a unit adapted to be mounted to a roof of the vehicle in the manner of a conventional, openable roof hatch (2); said hatch having, when closed, a rear part projecting upwardly above a roof of the vehicle and which includes an ambient air intake opening (3) in which said coarse filter is mounted; said hatch also including an interior air intake opening (9) communicating with the vehicle interior, means (11) for closing the ambient air intake opening and the interior air intake opening to desired extents, and at least one outlet opening (8) through which filtered air is blown by the fan unit into the vehicle interior.
Claim 3
Dependent Claim
25 words
An arrangement according to claim 1, wherein said means for closing the intake openings (3, 9) includes a closure element pivotable between said two openings.
Claim 4
Dependent Claim
24 words
An arrangement according to claim 1, wherein said fine-filtering unit (15-17) is mounted between the fan unit (4, 5) and said outlet opening (8).
Claim 5
Dependent Claim
22 words
An arrangement according to claim 3, wherein the fine-filtering unit includes a pre-filter (15), a carbon filter (16) and a microfilter (17).
Claim 6
Dependent Claim
24 words
An arrangement according to claim 1, wherein the hatch (2) is pivotable about a pivot axis mounted on the forward end of the hatch.
References Cited (Backward Citations)
US3401620A
Cited
US3657992A
Cited
AU480667A
Cited
US4038911A
Cited
US4193339A
Cited
JPS5679010A
Cited
JPS57147918A
Cited
JPS61132408A
Cited
US4800803A
Cited
DE3643436A1
Cited
US4709623A
Cited
US4895065A
Cited
US5003866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-29 | 1998-02-28 | 1998-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-29 | 2002-02-28 | 2002-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-29 | 2006-02-28 | 2006-08-30 | $7700.00 | Window Closed / Lapsed |